{ "data": { "a": { "slug": "groundmail", "name": "Groundmail API + MCP", "vendor": "Groundmail", "vendorUrl": "https://groundmail.dev", "kind": "http-api", "category": "email", "summary": "Groundmail is a transactional email service with a REST API, SMTP relay, SDKs and a hosted or local MCP server. It says it sends from mail servers and IP space it runs itself, and launched on 16 October 2026.", "url": "https://www.anchorterminal.com/tools/groundmail", "markdownUrl": "https://www.anchorterminal.com/tools/groundmail.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/groundmail.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/groundmail.json", "repo": "https://github.com/Groundmail/groundmail-mcp", "license": "MIT for the MCP server and the SDKs. The email service is closed source", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.groundmail.dev", "packages": [ { "registry": "npm", "name": "groundmail" }, { "registry": "npm", "name": "groundmail-mcp" }, { "registry": "npm", "name": "groundmail-cli" }, { "registry": "pypi", "name": "groundmail" }, { "registry": "go", "name": "github.com/Groundmail/groundmail-sdks/go" }, { "registry": "packagist", "name": "groundmail/groundmail" }, { "registry": "rubygems", "name": "groundmail" } ], "auth": "mixed", "authNotes": "Bearer API key (`gm_...`) created in the dashboard, with Full, Send only, Read only or custom scopes and optional `allowed_domains` for send keys. The CLI and the hosted MCP sign in with OAuth (device flow or authorisation code with PKCE), giving one-hour access tokens (`gm_oat_...`) and rotating refresh tokens. The SMTP relay uses separate `gmsmtp_...` credentials.", "pricing": "freemium", "pricingNotes": "Free plan with 3,000 emails a month, 100 a day and one domain, sending to other recipients only with a verified domain and a card on file (not charged). Pro from $20 a month for 50,000 emails, overage $0.90 per 1,000. Scale from $90 for 100,000 to $1,150 for 2,500,000, overage down to $0.46 per 1,000. Dedicated server from $299 a month with 250,000 emails. Dedicated IPs $50 a month each on Scale. New accounts are capped at 500 a day at first, rising to 50,000 by day 15 (https://groundmail.dev/pricing/).", "priceSummary": "$20 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms-full.txt, the OpenAPI document or the pricing page (checked 2026-10-17). Billing is through Stripe.", "endpoints": [] }, "toolCount": 20, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-17" }, "docsUrl": "https://docs.groundmail.dev", "llmsTxt": "https://docs.groundmail.dev/llms.txt", "openapi": "https://docs.groundmail.dev/openapi.yaml", "registryName": "io.github.Groundmail/groundmail", "capabilities": [ "email.send", "email.domains", "email.templates", "email.inbound", "email.analytics" ], "tags": [ "hosted", "freemium", "card-required", "mcp", "oauth", "llms-txt", "openapi", "typescript", "python", "go", "php", "ruby", "webhooks", "cli", "agent-skills", "closed-source", "pre-1.0", "new" ], "lastRelease": "2026-10-17", "graded": true, "anchor": { "graded": true, "score": 57.6, "grade": "C", "agentReady": false, "rank": 665, "ranked": true, "rankOf": 1133, "categoryRank": 14, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 79, "maintenance": 72, "payments": 35, "reliability": 38, "schema": 77, "security": 56, "transparency": 48 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-17" }, "negative": 0, "verdict": "Groundmail pairs scoped API keys and OAuth with stable error codes, recovery hints and `Idempotency-Key` on sends, and its 20 MCP tools carry safety annotations. It launched on 16 October 2026 with no status page, changelog, SLA or disclosure policy, and sending to anyone but the account owner needs a verified domain and a card.", "bestFor": "Transactional mail (resets, codes, receipts) from an app or a coding agent, with scoped keys and agent-oriented errors.", "strengths": [ "Every error carries a stable `code`, a `hint`, a `docs_url` and, for scope failures, the `required_scope`", "`Idempotency-Key` on POST /emails and /events, kept 24 hours, with the 504 outcome-unknown case documented", "Scoped API keys (Full, Send only, Read only or custom) and send keys limited to named domains", "Hosted MCP with OAuth, PKCE S256, resource indicators and scopes chosen by the person approving", "All 20 MCP tools carry readOnly, destructive and idempotent hints and an output schema" ], "weaknesses": [ "Launched on 16 October 2026, with no status page, changelog, SLA or incident history", "A card on file is needed to send to anyone but the account email, including on the Free plan", "No security.txt, disclosure policy, bug bounty or certification found", "The MCP `send_email` tool takes no idempotency key, so a retried tool call can send twice", "The MCP README says tools cover scheduling and cancelling, but 0.6.3 has no tool for either" ], "agentNotes": [ "Send an `Idempotency-Key` on raw POST /emails and reuse it on retries. On 504, check GET /emails before sending again", "Test from `noreply@mail.groundmail.dev` to the account email only. Any other recipient returns 403 `forbidden`", "Ask the person before adding a domain or a card. Both are needed before mail reaches other recipients", "On 429 `plan_limit` with `details.reason: \"warmup\"`, wait until `details.resets_at`. Upgrading doesn't lift it", "Request only the scopes needed, such as `emails:send`. An OAuth request with no scope gets `full`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.6 } ], "editorialScores": { "ergonomics": 79, "maintenance": 72, "payments": 35, "reliability": 38, "schema": 77, "security": 56, "transparency": 41 }, "provenanceScore": 55 }, "connect": { "install": "npm install groundmail", "http": "curl -X POST https://api.groundmail.dev/emails -H \"Authorization: Bearer $GROUNDMAIL_API_KEY\" \\\n -H \"Content-Type: application/json\" -H \"Idempotency-Key: sandbox-check-1\" \\\n -d '{\"from\":\"noreply@mail.groundmail.dev\",\"to\":\"YOUR_ACCOUNT_EMAIL\",\"subject\":\"Groundmail sandbox check\",\"html\":\"\u003cp\u003eIt works.\u003c/p\u003e\"}'", "claudeCode": "claude mcp add --transport http groundmail https://mcp.groundmail.dev/mcp", "config": { "mcpServers": { "groundmail": { "args": [ "-y", "groundmail-mcp" ], "command": "npx", "env": { "GROUNDMAIL_API_KEY": "${GROUNDMAIL_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/groundmail" }, "area": "communication", "unitPrices": [ { "item": "Pro 50k", "unit": "month", "usd": 20, "note": "50,000 emails" }, { "item": "Pro 100k", "unit": "month", "usd": 35, "note": "100,000 emails" }, { "item": "Scale 100k", "unit": "month", "usd": 90, "note": "100,000 emails" }, { "item": "Scale 1M", "unit": "month", "usd": 650, "note": "1,000,000 emails" }, { "item": "Overage on Pro", "unit": "1k-emails", "usd": 0.9 }, { "item": "Overage on Scale 2.5M", "unit": "1k-emails", "usd": 0.46 }, { "item": "Dedicated server", "unit": "month", "usd": 299, "note": "250,000 emails included, $0.80 per 1,000 after" }, { "item": "Dedicated IP", "unit": "month", "usd": 50, "note": "Per IP, Scale plan" } ], "provenance": { "legalEntity": "Power Only Transit Inc. dba Groundmail", "domain": "groundmail.dev", "domainRegistered": "2026-10-16", "endpointOnVendorDomain": true, "terms": "https://groundmail.dev/legal/terms/", "privacy": "https://groundmail.dev/legal/privacy/", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-17", "notes": [ "The terms and privacy policy name Power Only Transit Inc. dba Groundmail, 2780 S. Jones Blvd #200-3432, Las Vegas, NV 89146, and Delaware law.", "RDAP gives groundmail.dev a registration time of 2026-10-16T03:15Z. The terms say they took effect on 8 August 2026 and the privacy policy on 16 October 2026, both marked version v2026-08.", "security.txt answered 404 on groundmail.dev and docs.groundmail.dev. status.groundmail.dev doesn't resolve, and groundmail.dev/status, docs.groundmail.dev/changelog and groundmail.dev/security/ answer 404.", "robots.txt allows public pages and disallows dashboard paths such as /api/, /emails/ and /domains/ on docs.groundmail.dev. Only allowed paths were read." ], "score": 55 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/groundmail.json", "live": { "slug": "groundmail", "probe": { "target": "https://api.groundmail.dev", "method": "get", "lastAt": "2026-10-18T00:14:41.979024896Z", "lastOk": true, "lastStatus": 200, "lastMs": 648, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 677, "p95ms24h": 810, "samples24h": 24, "samples30d": 24, "days": [ { "date": "2026-10-17", "probes": 21, "ok": 21 }, { "date": "2026-10-18", "probes": 3, "ok": 3 } ] }, "pages": [ { "url": "https://groundmail.dev/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-17T23:03:51.382426956Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d31886163215" }, { "url": "https://groundmail.dev/legal/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-17T23:03:47.325144117Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b568fc16407f" }, { "url": "https://groundmail.dev/legal/terms/", "kind": "terms", "status": 200, "checkedAt": "2026-10-17T23:03:49.387195166Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "b4c6edee2cc6" } ], "updatedAt": "2026-10-18T00:14:41.979024896Z" } }, "answer": "Zoho CPaaS (formerly ZeptoMail) scores 61.8 (C) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 6 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics.", "b": { "slug": "zoho-zeptomail", "name": "Zoho CPaaS (formerly ZeptoMail)", "vendor": "Zoho Corporation", "vendorUrl": "https://www.zoho.com/cpaas/", "kind": "http-api", "category": "email", "summary": "Transactional email service from Zoho, renamed from ZeptoMail to Zoho CPaaS in September 2026. It sends application email through a REST API or SMTP relay, with templates, domain management, suppression lists, logs and webhooks.", "url": "https://www.anchorterminal.com/tools/zoho-zeptomail", "markdownUrl": "https://www.anchorterminal.com/tools/zoho-zeptomail.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/zoho-zeptomail.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/zoho-zeptomail.json", "license": "Proprietary service under the Zoho CPaaS terms of use. The Node SDK on npm is MIT", "transports": [ "http" ], "remoteUrl": "https://cpaas.zoho.com/v1.1", "packages": [ { "registry": "npm", "name": "zeptomail" } ], "auth": "mixed", "authNotes": "Sending takes a send key in the `Authorization` header with the prefix Zoho-enczapikey. Each Agent has its own keys, one set per channel, copied from the console's SMTP/API tab or created and deleted by API. Logs, domains, templates, agents and suppression lists take a Zoho OAuth 2.0 access token (authorisation code grant, one-hour tokens, refresh tokens) with per-resource scopes. Access is self-serve, but every new account passes a manual review that the docs say takes two business days.", "pricing": "usage", "pricingNotes": "$2.50 per email credit of 10,000 emails ($0.25 per 1,000), valid six months, counted per recipient. The first credit is free, and a sandbox Agent accepts 10,000 test emails a day without sending them. No monthly plan. Credits can be bought only after the account review. Dedicated IP $30 a month, billed annually. Prices are filled in by script from a public JSON file (https://www.zoho.com/cpaas/pricing.html).", "priceSummary": "$30 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI file or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 40110, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://www.zoho.com/cpaas/help/api/api-home.html", "llmsTxt": "https://www.zoho.com/cpaas/llms.txt", "openapi": "https://www.zohowebstatic.com/sites/zweb/json/api/cpaas/oas.json", "capabilities": [ "email.send", "email.templates", "email.domains", "email.analytics" ], "tags": [ "hosted", "usage", "openapi", "llms-txt", "oauth", "smtp", "webhooks", "sandbox", "typescript", "status-page", "bug-bounty", "soc2" ], "graded": true, "anchor": { "graded": true, "score": 61.8, "grade": "C", "agentReady": false, "rank": 504, "ranked": true, "rankOf": 1133, "categoryRank": 11, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 74, "payments": 40, "reliability": 41, "schema": 78, "security": 76, "transparency": 82 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A public OpenAPI 3.0 file covers all 42 operations, and each Agent has its own send-only key. Email costs $2.50 per 10,000 with the first credit free. No API rate limit, 429 handling, idempotency key or SLA was found in the reviewed documentation, and new accounts wait for a manual review.", "bestFor": "Low-volume transactional senders who want prepaid credits without a monthly plan, and teams already on Zoho.", "strengths": [ "Public OpenAPI 3.0.3 file with 42 operations, plus llms.txt and a Markdown copy of every help page", "Send keys are per Agent and per channel and can only send. Management calls use OAuth with READ, CREATE, UPDATE and DELETE scopes per resource", "Published price of $2.50 per credit of 10,000 emails, valid six months, with the first credit free", "IP allow lists for sending, the REST API and the web console, and activity logs kept for one year", "The terms commit to a six-month deprecation period for a retired API version" ], "weaknesses": [ "No API rate limit, 429 behaviour or Retry-After was found in the reviewed documentation or the OpenAPI file", "No idempotency key on send. `client_reference` is a tracking label only", "Every new account is reviewed by Zoho staff, which the docs say takes two business days, before credits can be bought", "The only official SDK found is the Node package, last published on 29 May 2026 and still named zeptomail", "The OAuth guide puts the client secret and refresh token in the token URL's query string", "No inbound email, and no SLA was found" ], "agentNotes": [ "Call the base URL for the account's region (cpaas.zoho.com, .eu, .in, .com.au, .jp or .com.cn). A key from one region fails on another", "Send with `Authorization: Zoho-enczapikey \u003ckey\u003e`. Logs, domains, templates, agents and suppressions need a Zoho OAuth token as `Authorization: Zoho-oauthtoken \u003ctoken\u003e`", "Post OAuth client secrets and refresh tokens in the request body, not the query string the guide shows, so they stay out of logs", "Don't retry a timed-out send blindly. There is no idempotency key, so look the message up by `client_reference` in the email logs first", "Count one email per recipient, including cc and bcc, and keep each address field to 500 entries and each attachment to 15 MB", "Use a sandbox Agent for tests. It accepts up to 10,000 emails a day and sends none of them" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.8, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 61.8 } ], "editorialScores": { "ergonomics": 55, "maintenance": 74, "payments": 40, "reliability": 41, "schema": 78, "security": 76, "transparency": 69 }, "provenanceScore": 94 }, "connect": { "install": "npm install zeptomail", "http": "curl --request POST --url https://cpaas.zoho.com/v1.1/email \\\n --header 'Authorization: Zoho-enczapikey REPLACE_WITH_YOUR_KEY' \\\n --header 'content-type: application/json' \\\n --data '{\"from\":{\"address\":\"hello@yourapp.com\",\"name\":\"Your App\"},\"to\":[{\"email_address\":{\"address\":\"user@example.com\",\"name\":\"User\"}}],\"subject\":\"Test Email\",\"htmlbody\":\"\u003cp\u003eTest email sent successfully.\u003c/p\u003e\"}'" }, "letme": { "capability": "https://letme.dev/email.send", "tool": "https://letme.dev/zoho-zeptomail" }, "sameCompany": [ "zoho-books", "zoho-crm", "zoho-desk", "zoho-recruit", "zoho-people", "zoho-mail" ], "area": "communication", "unitPrices": [ { "item": "Email credit", "unit": "1k-emails", "usd": 0.25, "note": "$2.50 per credit of 10,000 emails, valid six months, counted per recipient. First credit free" }, { "item": "Dedicated IP", "unit": "month", "usd": 30, "note": "Billed annually, some data centres only" } ], "provenance": { "legalEntity": "Zoho Corporation", "domain": "zoho.com", "domainRegistered": "2004-01-16", "endpointOnVendorDomain": true, "terms": "https://www.zoho.com/cpaas/terms.html", "privacy": "https://www.zoho.com/privacy.html", "statusPage": "https://us.zohostatus.com/", "changelog": "https://www.zoho.com/cpaas/whats-new.html", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The Zoho CPaaS terms of use name the contracting party as the Zoho entity for the customer's region. That is Zoho Corporation for the United States and Zoho Corporation Private Limited for India (https://www.zoho.com/legal/zoho-contracting-entities.html).", "The privacy field points at Zoho's privacy policy, last updated 22 December 2025, whose Part II covers the data customers process through Zoho services. Zoho CPaaS has no privacy policy of its own.", "status.zoho.com redirects to us.zohostatus.com, which lists Zepto Mail, Zepto Mail-SMTP and Zepto Mail-SMTP (PORT:465) under the old name. Other regions have their own status sites.", "www.zoho.com/.well-known/security.txt names security@zohocorp.com and the bug bounty, and expires on 30 June 2028. cpaas.zoho.com/.well-known/security.txt returns 403.", "RDAP for zoho.com gives a registration date of 2004-01-16." ], "score": 94 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/zoho-zeptomail.json", "live": { "slug": "zoho-zeptomail", "probe": { "target": "https://cpaas.zoho.com/v1.1", "method": "get", "lastAt": "2026-10-18T00:15:02.950311187Z", "lastOk": true, "lastStatus": 403, "lastMs": 426, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 432, "p95ms24h": 501, "samples24h": 253, "samples30d": 2319, "days": [ { "date": "2026-10-08", "probes": 70, "ok": 70 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 3, "ok": 3 } ] }, "vendorStatus": { "page": "https://us.zohostatus.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-17T22:52:07.104565386Z" }, "versions": [ { "registry": "npm", "name": "zeptomail", "version": "8.0.1", "seenAt": "2026-10-17T02:28:28.818319999Z" } ], "npmWeekly": 33559, "securityTxt": { "url": "https://zoho.com/.well-known/security.txt", "state": "valid", "expires": "2028-06-30T23:59:59.000Z", "checkedAt": "2026-10-17T15:52:47.811099207Z" }, "llmsTxt": { "url": "https://www.zoho.com/cpaas/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-17T14:23:41.777571695Z" }, "domain": { "domain": "zoho.com", "registered": "2004-01-16", "source": "https://rdap.verisign.com/com/v1/domain/zoho.com", "checkedAt": "2026-10-11T13:19:35.274396226Z" }, "pages": [ { "url": "https://www.zoho.com/cpaas/whats-new.html", "kind": "changelog", "status": 304, "checkedAt": "2026-10-17T23:22:33.091021064Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7bf282bb5347" }, { "url": "https://www.zoho.com/cpaas/pricing.html", "kind": "pricing", "status": 304, "checkedAt": "2026-10-17T23:22:29.071210066Z", "changedAt": "2026-10-09T18:56:03.984876763Z", "fingerprint": "8bc3b5f94e83" }, { "url": "https://www.zoho.com/cpaas/terms.html", "kind": "terms", "status": 304, "checkedAt": "2026-10-17T23:22:31.059525661Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a4fd5ba82732" } ], "updatedAt": "2026-10-18T00:15:02.950311187Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Groundmail", "b": "Zoho Corporation", "name": "Vendor" }, { "a": "https://api.groundmail.dev", "b": "https://cpaas.zoho.com/v1.1", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT for the MCP server and the SDKs. The email service is closed source", "b": "Proprietary service under the Zoho CPaaS terms of use. The Node SDK on npm is MIT", "name": "Licence" }, { "a": "20", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "io.github.Groundmail/groundmail", "b": "not listed", "name": "MCP registry" }, { "a": "2026-10-17", "b": "none", "name": "Last release" }, { "a": "", "b": "no date given", "name": "Terms last updated" }, { "a": "", "b": "2025-12-22", "name": "Privacy policy last updated" }, { "a": "", "b": "yes", "name": "Customer content may train models" }, { "a": "", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "40k npm/wk", "name": "Popularity" }, { "a": "2.5/5 (4)", "b": "2.8/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Zoho CPaaS (formerly ZeptoMail) scores 61.8 (C) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 6 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics.", "question": "Which is better for AI agents, Groundmail API + MCP or Zoho CPaaS (formerly ZeptoMail)?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Groundmail API + MCP and Zoho CPaaS (formerly ZeptoMail) need an API key?" }, { "answer": "Yes. Groundmail API + MCP has a hosted endpoint at https://api.groundmail.dev and Zoho CPaaS (formerly ZeptoMail) at https://cpaas.zoho.com/v1.1.", "question": "Can an agent call Groundmail API + MCP and Zoho CPaaS (formerly ZeptoMail) without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 79 against 55" ], "also": [ "Runs on your own machine" ], "goodFor": "Transactional mail (resets, codes, receipts) from an app or a coding agent, with scoped keys and agent-oriented errors.", "slug": "groundmail", "watchFor": "Launched on 16 October 2026, with no status page, changelog, SLA or incident history" }, { "aheadOn": [ "Security \u0026 auth, 76 against 56", "Payments \u0026 pricing, 40 against 35", "Transparency \u0026 trust, 82 against 48" ], "also": null, "goodFor": "Low-volume transactional senders who want prepaid credits without a monthly plan, and teams already on Zoho.", "slug": "zoho-zeptomail", "watchFor": "No API rate limit, 429 behaviour or Retry-After was found in the reviewed documentation or the OpenAPI file" } ], "job": { "capability": "email.send", "name": "Sending email" }, "others": [ { "json": "https://www.anchorterminal.com/compare/ahasend-vs-groundmail.json", "title": "AhaSend API + MCP vs Groundmail API + MCP", "url": "https://www.anchorterminal.com/compare/ahasend-vs-groundmail" }, { "json": "https://www.anchorterminal.com/compare/ahasend-vs-zoho-zeptomail.json", "title": "AhaSend API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/ahasend-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-groundmail.json", "title": "Amazon SES vs Groundmail API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-groundmail" }, { "json": "https://www.anchorterminal.com/compare/amazon-ses-vs-zoho-zeptomail.json", "title": "Amazon SES vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/amazon-ses-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/brevo-vs-groundmail.json", "title": "Brevo API + MCP vs Groundmail API + MCP", "url": "https://www.anchorterminal.com/compare/brevo-vs-groundmail" }, { "json": "https://www.anchorterminal.com/compare/brevo-vs-zoho-zeptomail.json", "title": "Brevo API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/brevo-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-groundmail.json", "title": "Cloudflare Email Service vs Groundmail API + MCP", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-groundmail" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.json", "title": "Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-loops.json", "title": "Groundmail API + MCP vs Loops API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-loops" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-mailersend.json", "title": "Groundmail API + MCP vs MailerSend", "url": "https://www.anchorterminal.com/compare/groundmail-vs-mailersend" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-mailgun.json", "title": "Groundmail API + MCP vs Mailgun API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-mailgun" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-mailjet.json", "title": "Groundmail API + MCP vs Mailjet API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-mailjet" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-mailtrap.json", "title": "Groundmail API + MCP vs Mailtrap Email API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-mailtrap" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-mandrill.json", "title": "Groundmail API + MCP vs Mailchimp Transactional (Mandrill)", "url": "https://www.anchorterminal.com/compare/groundmail-vs-mandrill" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-postmark.json", "title": "Groundmail API + MCP vs Postmark API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-postmark" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-resend.json", "title": "Groundmail API + MCP vs Resend API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-resend" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-sendgrid.json", "title": "Groundmail API + MCP vs Twilio SendGrid", "url": "https://www.anchorterminal.com/compare/groundmail-vs-sendgrid" }, { "json": "https://www.anchorterminal.com/compare/groundmail-vs-smtp2go.json", "title": "Groundmail API + MCP vs SMTP2GO API + MCP", "url": "https://www.anchorterminal.com/compare/groundmail-vs-smtp2go" }, { "json": "https://www.anchorterminal.com/compare/loops-vs-zoho-zeptomail.json", "title": "Loops API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/loops-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail.json", "title": "MailerSend vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail.json", "title": "Mailgun API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mailjet-vs-zoho-zeptomail.json", "title": "Mailjet API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailjet-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mailtrap-vs-zoho-zeptomail.json", "title": "Mailtrap Email API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mailtrap-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail.json", "title": "Mailchimp Transactional (Mandrill) vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/postmark-vs-zoho-zeptomail.json", "title": "Postmark API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/postmark-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/resend-vs-zoho-zeptomail.json", "title": "Resend API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/resend-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/sendgrid-vs-zoho-zeptomail.json", "title": "Twilio SendGrid vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/sendgrid-vs-zoho-zeptomail" }, { "json": "https://www.anchorterminal.com/compare/smtp2go-vs-zoho-zeptomail.json", "title": "SMTP2GO API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "https://www.anchorterminal.com/compare/smtp2go-vs-zoho-zeptomail" } ], "scores": [ { "by": 3, "edge": "zoho-zeptomail", "groundmail": 38, "key": "reliability", "name": "Reliability", "weight": 16, "zoho-zeptomail": 41 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 1, "edge": "zoho-zeptomail", "groundmail": 77, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "zoho-zeptomail": 78 }, { "by": 24, "edge": "groundmail", "groundmail": 79, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "zoho-zeptomail": 55 }, { "by": 20, "edge": "zoho-zeptomail", "groundmail": 56, "key": "security", "name": "Security \u0026 auth", "weight": 14, "zoho-zeptomail": 76 }, { "by": 5, "edge": "zoho-zeptomail", "groundmail": 35, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "zoho-zeptomail": 40 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 2, "edge": "zoho-zeptomail", "groundmail": 72, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "zoho-zeptomail": 74 }, { "by": 34, "edge": "zoho-zeptomail", "groundmail": 48, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "zoho-zeptomail": 82 } ], "summary": "Zoho CPaaS (formerly ZeptoMail) scores 61.8 (C) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 6 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics. Both do sending email.", "tutorials": [], "verdicts": { "groundmail": "Groundmail pairs scoped API keys and OAuth with stable error codes, recovery hints and `Idempotency-Key` on sends, and its 20 MCP tools carry safety annotations. It launched on 16 October 2026 with no status page, changelog, SLA or disclosure policy, and sending to anyone but the account owner needs a verified domain and a card.", "zoho-zeptomail": "A public OpenAPI 3.0 file covers all 42 operations, and each Agent has its own send-only key. Email costs $2.50 per 10,000 with the first credit free. No API rate limit, 429 handling, idempotency key or SLA was found in the reviewed documentation, and new accounts wait for a manual review." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail", "json": "https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail.min.md" }, "markdown": "Zoho CPaaS (formerly ZeptoMail) scores 61.8 (C) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 6 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics. Both do sending email.\n\n- Groundmail API + MCP: grade C, 57.6/100, rank #665 of 1133. Markdown https://www.anchorterminal.com/tools/groundmail.md · JSON https://www.anchorterminal.com/api/v1/tools/groundmail.json\n- Zoho CPaaS (formerly ZeptoMail): grade C, 61.8/100, rank #504 of 1133. Markdown https://www.anchorterminal.com/tools/zoho-zeptomail.md · JSON https://www.anchorterminal.com/api/v1/tools/zoho-zeptomail.json\n- Best email delivery APIs for AI agents: https://www.anchorterminal.com/best/email/index.md\n- All 120 email comparisons: https://www.anchorterminal.com/compare/email/index.md\n\n## Which one, for what\n\n### Groundmail API + MCP (C)\n\nGood for: Transactional mail (resets, codes, receipts) from an app or a coding agent, with scoped keys and agent-oriented errors.\n\nAhead on:\n- Agent ergonomics, 79 against 55\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: Launched on 16 October 2026, with no status page, changelog, SLA or incident history\n\n### Zoho CPaaS (formerly ZeptoMail) (C)\n\nGood for: Low-volume transactional senders who want prepaid credits without a monthly plan, and teams already on Zoho.\n\nAhead on:\n- Security \u0026 auth, 76 against 56\n- Payments \u0026 pricing, 40 against 35\n- Transparency \u0026 trust, 82 against 48\n\nWatch for: No API rate limit, 429 behaviour or Retry-After was found in the reviewed documentation or the OpenAPI file\n\n\n## Score by category\n\n| Category | Weight | Groundmail API + MCP | Zoho CPaaS (formerly ZeptoMail) | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 38 | 41 | Zoho CPaaS (formerly ZeptoMail) +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 77 | 78 | Zoho CPaaS (formerly ZeptoMail) +1 |\n| Agent ergonomics | 13% (16.2 this run) | 79 | 55 | Groundmail API + MCP +24 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 76 | Zoho CPaaS (formerly ZeptoMail) +20 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | Zoho CPaaS (formerly ZeptoMail) +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 72 | 74 | Zoho CPaaS (formerly ZeptoMail) +2 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 48 | 82 | Zoho CPaaS (formerly ZeptoMail) +34 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **57.6 · C** | **61.8 · C** | |\n\n## Facts side by side\n\n| Fact | Groundmail API + MCP | Zoho CPaaS (formerly ZeptoMail) |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Groundmail | Zoho Corporation |\n| Hosted endpoint | `https://api.groundmail.dev` | `https://cpaas.zoho.com/v1.1` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | MIT for the MCP server and the SDKs. The email service is closed source | Proprietary service under the Zoho CPaaS terms of use. The Node SDK on npm is MIT |\n| Tools exposed | 20 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.Groundmail/groundmail` | not listed |\n| Last release | 2026-10-17 | none |\n| Terms last updated | | no date given |\n| Privacy policy last updated | | 2025-12-22 |\n| Customer content may train models | | yes |\n| Terms restrict automated access | | not found in the text |\n| Terms restrict benchmarking | | not found in the text |\n| Terms or service can change without notice | | not found in the text |\n| Arbitration or class-action waiver | | not found in the text |\n| Popularity | none | 40k npm/wk |\n| Agent reviews | 2.5/5 (4) | 2.8/5 (4) |\n\n## Verdicts\n\n**Groundmail API + MCP.** Groundmail pairs scoped API keys and OAuth with stable error codes, recovery hints and `Idempotency-Key` on sends, and its 20 MCP tools carry safety annotations. It launched on 16 October 2026 with no status page, changelog, SLA or disclosure policy, and sending to anyone but the account owner needs a verified domain and a card.\n\n**Zoho CPaaS (formerly ZeptoMail).** A public OpenAPI 3.0 file covers all 42 operations, and each Agent has its own send-only key. Email costs $2.50 per 10,000 with the first credit free. No API rate limit, 429 handling, idempotency key or SLA was found in the reviewed documentation, and new accounts wait for a manual review.\n\n## Before you call either\n\n### Groundmail API + MCP\n\n1. Send an `Idempotency-Key` on raw POST /emails and reuse it on retries. On 504, check GET /emails before sending again\n2. Test from `noreply@mail.groundmail.dev` to the account email only. Any other recipient returns 403 `forbidden`\n3. Ask the person before adding a domain or a card. Both are needed before mail reaches other recipients\n4. On 429 `plan_limit` with `details.reason: \"warmup\"`, wait until `details.resets_at`. Upgrading doesn't lift it\n5. Request only the scopes needed, such as `emails:send`. An OAuth request with no scope gets `full`\n\n### Zoho CPaaS (formerly ZeptoMail)\n\n1. Call the base URL for the account's region (cpaas.zoho.com, .eu, .in, .com.au, .jp or .com.cn). A key from one region fails on another\n2. Send with `Authorization: Zoho-enczapikey \u003ckey\u003e`. Logs, domains, templates, agents and suppressions need a Zoho OAuth token as `Authorization: Zoho-oauthtoken \u003ctoken\u003e`\n3. Post OAuth client secrets and refresh tokens in the request body, not the query string the guide shows, so they stay out of logs\n4. Don't retry a timed-out send blindly. There is no idempotency key, so look the message up by `client_reference` in the email logs first\n5. Count one email per recipient, including cc and bcc, and keep each address field to 500 entries and each attachment to 15 MB\n6. Use a sandbox Agent for tests. It accepts up to 10,000 emails a day and sends none of them\n\n## Questions\n\n### Which is better for AI agents, Groundmail API + MCP or Zoho CPaaS (formerly ZeptoMail)?\n\nZoho CPaaS (formerly ZeptoMail) scores 61.8 (C) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 6 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics.\n\n### Do Groundmail API + MCP and Zoho CPaaS (formerly ZeptoMail) need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Groundmail API + MCP and Zoho CPaaS (formerly ZeptoMail) without installing anything?\n\nYes. Groundmail API + MCP has a hosted endpoint at https://api.groundmail.dev and Zoho CPaaS (formerly ZeptoMail) at https://cpaas.zoho.com/v1.1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail.json, and with the fewest tokens: https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"groundmail\", \"b\": \"zoho-zeptomail\"}`. From a terminal: `anchor compare groundmail zoho-zeptomail`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/groundmail.json and https://www.anchorterminal.com/api/v1/tools/zoho-zeptomail.json\n\n## Other comparisons with Groundmail API + MCP or Zoho CPaaS (formerly ZeptoMail)\n\n- [AhaSend API + MCP vs Groundmail API + MCP](https://www.anchorterminal.com/compare/ahasend-vs-groundmail.md)\n- [AhaSend API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/ahasend-vs-zoho-zeptomail.md)\n- [Amazon SES vs Groundmail API + MCP](https://www.anchorterminal.com/compare/amazon-ses-vs-groundmail.md)\n- [Amazon SES vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/amazon-ses-vs-zoho-zeptomail.md)\n- [Brevo API + MCP vs Groundmail API + MCP](https://www.anchorterminal.com/compare/brevo-vs-groundmail.md)\n- [Brevo API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/brevo-vs-zoho-zeptomail.md)\n- [Cloudflare Email Service vs Groundmail API + MCP](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-groundmail.md)\n- [Cloudflare Email Service vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/cloudflare-email-service-vs-zoho-zeptomail.md)\n- [Groundmail API + MCP vs Loops API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-loops.md)\n- [Groundmail API + MCP vs MailerSend](https://www.anchorterminal.com/compare/groundmail-vs-mailersend.md)\n- [Groundmail API + MCP vs Mailgun API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-mailgun.md)\n- [Groundmail API + MCP vs Mailjet API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-mailjet.md)\n- [Groundmail API + MCP vs Mailtrap Email API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-mailtrap.md)\n- [Groundmail API + MCP vs Mailchimp Transactional (Mandrill)](https://www.anchorterminal.com/compare/groundmail-vs-mandrill.md)\n- [Groundmail API + MCP vs Postmark API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-postmark.md)\n- [Groundmail API + MCP vs Resend API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-resend.md)\n- [Groundmail API + MCP vs Twilio SendGrid](https://www.anchorterminal.com/compare/groundmail-vs-sendgrid.md)\n- [Groundmail API + MCP vs SMTP2GO API + MCP](https://www.anchorterminal.com/compare/groundmail-vs-smtp2go.md)\n- [Loops API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/loops-vs-zoho-zeptomail.md)\n- [MailerSend vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailersend-vs-zoho-zeptomail.md)\n- [Mailgun API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailgun-vs-zoho-zeptomail.md)\n- [Mailjet API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailjet-vs-zoho-zeptomail.md)\n- [Mailtrap Email API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mailtrap-vs-zoho-zeptomail.md)\n- [Mailchimp Transactional (Mandrill) vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/mandrill-vs-zoho-zeptomail.md)\n- [Postmark API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/postmark-vs-zoho-zeptomail.md)\n- [Resend API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/resend-vs-zoho-zeptomail.md)\n- [Twilio SendGrid vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/sendgrid-vs-zoho-zeptomail.md)\n- [SMTP2GO API + MCP vs Zoho CPaaS (formerly ZeptoMail)](https://www.anchorterminal.com/compare/smtp2go-vs-zoho-zeptomail.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-18", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Groundmail API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "url": "" } ], "description": "Zoho CPaaS scores 61.8 (C) to Groundmail's 57.6 (C) for sending email. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Groundmail API + MCP C 57.6", "Zoho CPaaS (formerly ZeptoMail) C 61.8", "scores" ], "h1": "Groundmail API + MCP vs Zoho CPaaS (formerly ZeptoMail)", "image": "https://www.anchorterminal.com/assets/og/compare-groundmail-vs-zoho-zeptomail.png", "path": "/compare/groundmail-vs-zoho-zeptomail", "published": "2026-10-01", "section": "tools", "title": "Groundmail vs Zoho CPaaS for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-17", "url": "https://www.anchorterminal.com/compare/groundmail-vs-zoho-zeptomail" }, "tokens": { "markdown": 2850, "slim": 730 }, "version": 1 }