{
  "data": {
    "a": {
      "slug": "himalaya",
      "name": "Himalaya",
      "vendor": "Pimalaya",
      "vendorUrl": "https://pimalaya.org",
      "kind": "sdk",
      "category": "mailbox-access",
      "summary": "Himalaya is an open-source command-line email client from the Pimalaya project. It lists, searches, reads, composes and sends mail over IMAP, SMTP, JMAP, the Gmail API, Microsoft Graph and local stores, with JSON output for scripts and agents.",
      "url": "https://www.anchorterminal.com/tools/himalaya",
      "markdownUrl": "https://www.anchorterminal.com/tools/himalaya.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/himalaya.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/himalaya.json",
      "repo": "https://github.com/pimalaya/himalaya",
      "license": "MIT OR Apache-2.0",
      "transports": [],
      "packages": [
        {
          "registry": "cargo",
          "name": "himalaya"
        }
      ],
      "auth": "mixed",
      "authNotes": "Himalaya issues no credential of its own. It signs in to the mailbox with what the provider accepts, which is an app password or account password over SASL for IMAP and SMTP, a bearer token or basic auth for JMAP, and one OAuth 2.0 bearer token for the Gmail API or Microsoft Graph. Each secret is read from a shell command such as a password manager, or from a raw value in the config file. Version 2 ships no OAuth flow, so tokens come from an external broker such as `ortie` and an OAuth app the owner registers with Google or Microsoft.",
      "pricing": "free",
      "pricingNotes": "Free software with nothing to buy, and the sponsor page states there is no paid tier. An agent can start with the binary and a mailbox credential. Pimalaya sells optional partnerships, from EUR 3,000 a year for email providers and EUR 5,000 for integrators, and describes a EUR 12 a year sign-in service for Gmail and Microsoft 365 as planned and not built (checked 2026-10-09).",
      "priceSummary": "Free · OSS",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the README, the source or pimalaya.org (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 7412,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://github.com/pimalaya/himalaya",
      "capabilities": [
        "mailbox.read",
        "mailbox.search",
        "mailbox.send",
        "mailbox.drafts"
      ],
      "tags": [
        "open-source",
        "local",
        "cli",
        "rust",
        "free",
        "no-card",
        "imap",
        "smtp",
        "jmap",
        "gmail",
        "microsoft-graph",
        "json-output"
      ],
      "lastRelease": "2026-10-02",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 64.5,
        "grade": "B",
        "agentReady": false,
        "rank": 348,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 5,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 88,
          "payments": 60,
          "reliability": 84,
          "schema": 70,
          "security": 43,
          "transparency": 69
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": -3,
        "negativeNotes": [
          "2 October 2026. Until 2.2.1, `message send` passed the `Bcc:` header through SMTP unchanged, so every recipient could see the blind recipients. Issue #747 reported it against 2.1.0 on 12 September 2026, the fix was committed on 26 September and released on 2 October, and the changelog documents it. No security advisory was published. Fixed and documented, so the smaller deduction applies (https://github.com/pimalaya/himalaya/issues/747)"
        ],
        "verdict": "One binary reaches mailboxes on IMAP, JMAP, Gmail and Microsoft Graph with the same commands, and `--json` output has a JSON Schema for each command. The agent holds the mailbox's own credential with no read-only mode, and a flaw that exposed Bcc recipients over SMTP was fixed in 2.2.1 on 2 October 2026.",
        "bestFor": "An agent with a shell that must work in one person's existing mailbox on any provider, including plain IMAP hosts, without a hosted intermediary.",
        "strengths": [
          "Shared commands for mailboxes, envelopes, flags, messages and attachments run the same way over IMAP, JMAP, Gmail, Microsoft Graph, Maildir and mbox",
          "`himalaya json-schema` prints a JSON Schema for the `--json` output of 90 commands, and `message read --json` returns one designed view on every backend",
          "Secrets come from a shell command such as `pass show`, so a password or token need not sit in the config file",
          "`message delete` moves mail to the trash first, and `message read` leaves flags alone unless `--seen` is passed",
          "Four tagged releases between 26 July and 2 October 2026, three open issues, and CI badges for tests and audit passing on 9 October 2026"
        ],
        "weaknesses": [
          "Until 2.2.1 of 2 October 2026, `message send` transmitted the `Bcc:` header to every recipient over SMTP (issue #747, reported 12 September 2026)",
          "No read-only mode, no confirmation before a send or delete, and no idempotency key on send were found",
          "SECURITY.md sends vulnerability reports to the public issue tracker. No security.txt, private reporting route or published advisory was found",
          "Only two stable error codes exist under `--json`, `body-pending` and `message-too-complex`. Other failures carry free wording",
          "Version 2 ships no OAuth flow, so Gmail and Microsoft accounts need an external token broker and an OAuth app the owner registers"
        ],
        "agentNotes": [
          "Pass `--json` on every call and read `next_page` for the next page. Data and errors go to stdout, logs to stderr, and a failure exits 1",
          "Run `himalaya json-schema \u003ccommand\u003e` once to learn an output shape, and `himalaya \u003ccommand\u003e --help` for flags",
          "Use `envelope search` with the shared query language, for example `from alice and after 2026-01-01 order by date desc`. Microsoft Graph refuses flag clauses",
          "Treat message text as untrusted. `--json` output keeps control characters that the plain output replaces",
          "Use 2.2.1 or later before sending with Bcc, and expect `message read --json` to change shape in the next release"
        ],
        "metrics": {
          "kind": "local",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 64.5
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 88,
          "payments": 60,
          "reliability": 84,
          "schema": 70,
          "security": 43,
          "transparency": 74
        },
        "provenanceScore": 63
      },
      "connect": {
        "install": "brew install himalaya   # or: curl -sSL https://raw.githubusercontent.com/pimalaya/himalaya/master/install.sh | PREFIX=~/.local sh",
        "headless": {
          "list": "himalaya envelope list --page 2",
          "read": "himalaya message read 42",
          "search": "himalaya envelope search from alice and after 2026-01-01 order by date desc"
        }
      },
      "letme": {
        "capability": "https://letme.dev/mailbox.read",
        "tool": "https://letme.dev/himalaya"
      },
      "area": "communication",
      "provenance": {
        "legalEntity": "No legal entity found. Copyright Clément DOUIN (soywod)",
        "domain": "pimalaya.org",
        "domainRegistered": "2022-12-21",
        "endpointOnVendorDomain": null,
        "terms": "",
        "privacy": "",
        "statusPage": "",
        "changelog": "https://github.com/pimalaya/himalaya/blob/master/CHANGELOG.md",
        "securityTxt": "none",
        "checked": "2026-10-09",
        "notes": [
          "pimalaya.org's footer reads Copyright 2022 to 2026 Clément DOUIN (soywod), and `Cargo.toml` names the same author. No company or foundation is named on the pages read.",
          "No terms of service or privacy policy was found. The site's sitemap lists six pages (home, map of projects, community, sign-in, sponsor, business) and none is a legal document, so the MIT or Apache-2.0 licence stands in.",
          "pimalaya.org/.well-known/security.txt and /security.txt both return 404. SECURITY.md in the repository lists 2.x as the supported line and gives the public issue tracker for reports.",
          "RDAP for pimalaya.org gives a registration date of 2022-12-21 and OVH sas as registrar.",
          "The software runs on the owner's machine and connects to the owner's mail servers, so no vendor endpoint exists."
        ],
        "score": 63
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/himalaya.json",
      "live": {
        "slug": "himalaya",
        "versions": [
          {
            "registry": "github",
            "name": "pimalaya/himalaya",
            "version": "v2.2.1",
            "released": "2026-10-02",
            "seenAt": "2026-10-09T16:57:44.106760361Z"
          }
        ],
        "githubStars": 7417,
        "pages": [
          {
            "url": "https://raw.githubusercontent.com/pimalaya/himalaya/master/CHANGELOG.md",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:45:53.201845848Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cb5190799b74"
          }
        ],
        "updatedAt": "2026-10-09T18:45:53.201845848Z"
      }
    },
    "answer": "Himalaya scores 64.5 (B) on agent readiness against Unipile's 58.4 (C), and leads in 4 of 7 scored categories. Unipile leads on schema \u0026 documentation and agent ergonomics.",
    "b": {
      "slug": "unipile",
      "name": "Unipile",
      "vendor": "UNIPILE SAS",
      "vendorUrl": "https://www.unipile.com",
      "kind": "http-api",
      "category": "mailbox-access",
      "summary": "Unipile is a hosted API from Unipile SAS in France that connects to accounts people already have. It reads, searches, sends and files mail in Gmail, Outlook and IMAP mailboxes, and also covers calendars, LinkedIn, WhatsApp, Instagram and Telegram.",
      "url": "https://www.anchorterminal.com/tools/unipile",
      "markdownUrl": "https://www.anchorterminal.com/tools/unipile.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/unipile.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/unipile.json",
      "repo": "https://github.com/unipile/unipile-node-sdk",
      "license": "Proprietary service under Unipile's terms of use. The v1 Node SDK repository and the unipile-mcp repository carry an MIT licence file",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://developer.unipile.com/mcp?branch=v1.0",
      "packages": [
        {
          "registry": "npm",
          "name": "unipile-node-sdk"
        }
      ],
      "auth": "api-key",
      "authNotes": "Self-serve. A person signs up at dashboard.unipile.com, copies the account's DSN (host and port) and generates an access token, which goes in the `X-API-KEY` header. A v1 token reaches every connected account and has no scopes. Mailboxes are connected by the end user through Google or Microsoft OAuth, using an OAuth app the customer registers and has verified, or with IMAP and SMTP credentials. The v2 beta adds keys limited to a Scope of accounts.",
      "pricing": "paid",
      "pricingNotes": "55 dollars (49 euros) a month covers up to 10 connected accounts, then 5.50 dollars an account a month, falling to 3.50 above 5,000. No charge per request or message. A 7-day trial needs no card, and there is no free tier after it. An SLA needs a custom plan (checked 2026-10-08).",
      "priceSummary": "$55 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI spec or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 5,
      "popularity": {
        "githubStars": 48,
        "npmWeekly": 82529,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://developer.unipile.com",
      "llmsTxt": "https://developer.unipile.com/llms.txt",
      "openapi": "https://api1.unipile.com/api-json?port=13111",
      "registryName": "com.unipile/unipile-mcp",
      "capabilities": [
        "mailbox.read",
        "mailbox.search",
        "mailbox.send",
        "mailbox.drafts",
        "mailbox.sync",
        "calendar.read",
        "calendar.write",
        "calendar.webhooks",
        "messaging.whatsapp",
        "messaging.inbound"
      ],
      "tags": [
        "hosted",
        "paid",
        "free-trial",
        "no-card",
        "api-key",
        "openapi",
        "llms-txt",
        "mcp",
        "webhooks",
        "gmail",
        "outlook",
        "imap",
        "calendar",
        "linkedin",
        "whatsapp",
        "typescript",
        "eu",
        "soc2",
        "status-page",
        "closed-source"
      ],
      "lastRelease": "2026-09-02",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 58.4,
        "grade": "C",
        "agentReady": false,
        "rank": 581,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 6,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 73,
          "maintenance": 59,
          "payments": 40,
          "reliability": 56,
          "schema": 77,
          "security": 37,
          "transparency": 71
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "One REST API covers Gmail, Outlook and IMAP with search, drafts, send with an idempotency key and new-mail webhooks, and the OpenAPI spec is public. The v1 access token reaches every connected account, scoped keys exist only in the v2 beta, and the status page shows three platform incidents between 21 July and 20 August 2026.",
        "bestFor": "A product that needs one API over Gmail, Outlook and IMAP together with LinkedIn or WhatsApp messaging, priced per account.",
        "strengths": [
          "Public OpenAPI 3.0 spec with 94 operations, readable without a key, plus llms.txt and a Markdown copy of every docs page",
          "`POST /api/v1/emails` accepts an `Idempotency-Key` header of up to 255 characters, so a retried send returns the first result",
          "`GET /api/v1/emails` has cursor pagination, `limit` up to 250, `meta_only`, a full-text `search` and filters for folder, sender, recipient and date",
          "Price is per connected account with no charge per request, from 55 dollars a month for up to 10 accounts, with a 7-day trial and no card",
          "The hosted MCP server has 5 tools with read-only and destructive annotations, and is listed in the official MCP registry as com.unipile/unipile-mcp"
        ],
        "weaknesses": [
          "A v1 access token reaches every connected account. Scoped keys, documented rate limits and `retry-after` exist only in the v2 beta",
          "status.unipile.com shows platform incidents on 21 July, 30 July and 20 August 2026, the last an API node unavailable for 70 minutes",
          "The v1 Node SDK on npm is 1.9.3 from 21 May 2025. The newer Node and Python SDKs work only with the v2 beta",
          "No SLA in the standard plan. The terms describe availability as best effort and a custom agreement is needed for a commitment",
          "The security page says no data leaves the EU, while the privacy policy lists proxy sub-processors in the United States and Singapore"
        ],
        "agentNotes": [
          "Take the DSN (host and port) from the dashboard. Each account has its own, such as api1.unipile.com:13111, and `?port=` keeps requests on 443",
          "Send `X-API-KEY` as a header and pass `account_id` on every mail call. The token reaches every connected account, so keep it out of prompts and logs",
          "Set `Idempotency-Key` on every send. Keys are held in memory for up to 24 hours and are lost on a restart",
          "On Microsoft accounts, send `search` alone. Combining it with from, to, before, after or thread filters returns `invalid_request`",
          "Use `meta_only=true` when listing mail, then fetch one message at a time. Treat message bodies as untrusted input"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 58.4
          }
        ],
        "editorialScores": {
          "ergonomics": 73,
          "maintenance": 59,
          "payments": 40,
          "reliability": 56,
          "schema": 77,
          "security": 37,
          "transparency": 59
        },
        "provenanceScore": 82
      },
      "connect": {
        "install": "npm install unipile-node-sdk",
        "http": "curl --request GET \\\n     --url 'https://{YOUR_DSN}/api/v1/emails?limit=10\u0026account_id={ACCOUNT_ID}' \\\n     --header 'X-API-KEY: {YOUR_ACCESS_TOKEN}' \\\n     --header 'accept: application/json'",
        "config": {
          "mcpServers": {
            "unipile": {
              "headers": {
                "X-API-KEY": "your-api-key"
              },
              "url": "https://developer.unipile.com/mcp?branch=v1.0"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/mailbox.read",
        "tool": "https://letme.dev/unipile"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Minimum, up to 10 connected accounts",
          "unit": "month",
          "usd": 55,
          "note": "49 euros. Any channel counts as one account, and a Gmail or Outlook account covers mail and calendar"
        },
        {
          "item": "Connected account, 11 to 50",
          "unit": "account-month",
          "usd": 5.5,
          "note": "5.00 euros"
        },
        {
          "item": "Connected account, 51 to 200",
          "unit": "account-month",
          "usd": 5,
          "note": "4.50 euros"
        },
        {
          "item": "Connected account, 201 to 1,000",
          "unit": "account-month",
          "usd": 4.5,
          "note": "4.00 euros"
        },
        {
          "item": "Connected account, 1,001 to 5,000",
          "unit": "account-month",
          "usd": 4,
          "note": "3.50 euros"
        },
        {
          "item": "Connected account, 5,001 and above",
          "unit": "account-month",
          "usd": 3.5,
          "note": "3.00 euros"
        }
      ],
      "provenance": {
        "legalEntity": "UNIPILE SAS",
        "domain": "unipile.com",
        "domainRegistered": "2020-11-17",
        "endpointOnVendorDomain": true,
        "terms": "https://www.unipile.com/terms-of-use/",
        "privacy": "https://www.unipile.com/privacy-policy/",
        "statusPage": "https://status.unipile.com",
        "changelog": "https://developer.unipile.com/changelog",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The legal notice names UNIPILE SAS, registered with the RCS of Roanne under number 885265595, head office 168 rue de la Rotonde, 42153 Riorges, France.",
          "The API answers on a per-account host and port under unipile.com, such as api1.unipile.com:13111. The MCP server is at developer.unipile.com/mcp, a ReadMe-hosted docs site on the vendor's domain.",
          "www.unipile.com/.well-known/security.txt returns 404. No vulnerability disclosure policy or bug bounty was found on the security page.",
          "The terms are governed by French law, with the Commercial Court of Roanne as the court. They say changes take effect on publication.",
          "RDAP for unipile.com gives a registration date of 2020-11-17."
        ],
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/unipile.json",
      "live": {
        "slug": "unipile",
        "probe": {
          "target": "https://developer.unipile.com/mcp?branch=v1.0",
          "method": "get",
          "lastAt": "2026-10-10T02:55:14.307270129Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 48,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 50,
          "p95ms24h": 115,
          "samples24h": 249,
          "samples30d": 373,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 93,
              "ok": 93
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 30,
              "ok": 30
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.unipile.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-10T00:51:22.191137572Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "unipile/unipile-node-sdk",
            "version": "v1.9.3",
            "released": "2025-05-21",
            "seenAt": "2026-10-09T17:26:03.706854998Z"
          },
          {
            "registry": "mcp-registry",
            "name": "com.unipile/unipile-mcp",
            "version": "1.0.0",
            "seenAt": "2026-10-09T02:57:46.004536428Z"
          },
          {
            "registry": "npm",
            "name": "unipile-node-sdk",
            "version": "1.9.3",
            "seenAt": "2026-10-09T17:26:02.870834Z"
          }
        ],
        "githubStars": 48,
        "npmWeekly": 64458,
        "securityTxt": {
          "url": "https://unipile.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-09T15:40:05.12019111Z"
        },
        "llmsTxt": {
          "url": "https://developer.unipile.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-09T14:02:56.103637016Z"
        },
        "pages": [
          {
            "url": "https://developer.unipile.com/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:35:24.694206758Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "14178c9246c1"
          },
          {
            "url": "https://www.unipile.com/privacy-policy/",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-09T18:55:14.013902812Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cbc48f825ecc"
          },
          {
            "url": "https://www.unipile.com/terms-of-use/",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-09T18:55:16.024548089Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3d0b4ec6b8b4"
          }
        ],
        "updatedAt": "2026-10-10T02:55:14.307270129Z"
      }
    },
    "facts": [
      {
        "a": "SDK + MCP",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Pimalaya",
        "b": "UNIPILE SAS",
        "name": "Vendor"
      },
      {
        "a": "no (local only)",
        "b": "https://developer.unipile.com/mcp?branch=v1.0",
        "name": "Hosted endpoint"
      },
      {
        "a": "",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Free",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "MIT OR Apache-2.0",
        "b": "Proprietary service under Unipile's terms of use. The v1 Node SDK repository and the unipile-mcp repository carry an MIT licence file",
        "name": "Licence"
      },
      {
        "a": "none",
        "b": "5",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "yes",
        "name": "Read-only variant documented"
      },
      {
        "a": "no",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "not listed",
        "b": "com.unipile/unipile-mcp",
        "name": "MCP registry"
      },
      {
        "a": "2026-10-02",
        "b": "2026-09-02",
        "name": "Last release"
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        "a": "no document linked",
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        "name": "Terms last updated"
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      {
        "a": "no document linked",
        "b": "2026-09-28",
        "name": "Privacy policy last updated"
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      {
        "a": "",
        "b": "not found in the text",
        "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": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "7.4k stars",
        "b": "48 stars, 83k npm/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Himalaya scores 64.5 (B) on agent readiness against Unipile's 58.4 (C), and leads in 4 of 7 scored categories. Unipile leads on schema \u0026 documentation and agent ergonomics.",
        "question": "Which is better for AI agents, Himalaya or Unipile?"
      },
      {
        "answer": "No hosted endpoint is listed for Himalaya. Unipile has a hosted endpoint at https://developer.unipile.com/mcp?branch=v1.0.",
        "question": "Can an agent call Himalaya and Unipile without installing anything?"
      },
      {
        "answer": "Himalaya is open source (MIT OR Apache-2.0). No open-source release is listed for Unipile.",
        "question": "Are Himalaya and Unipile open source?"
      }
    ],
    "goodFor": [
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        "aheadOn": [
          "Reliability, 84 against 56",
          "Security \u0026 auth, 43 against 37",
          "Payments \u0026 pricing, 60 against 40",
          "Maintenance \u0026 community, 88 against 59"
        ],
        "also": [
          "Open source"
        ],
        "goodFor": "An agent with a shell that must work in one person's existing mailbox on any provider, including plain IMAP hosts, without a hosted intermediary.",
        "slug": "himalaya",
        "watchFor": "Until 2.2.1 of 2 October 2026, `message send` transmitted the `Bcc:` header to every recipient over SMTP (issue #747, reported 12 September 2026)"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 77 against 70",
          "Agent ergonomics, 73 against 65"
        ],
        "also": [
          "A hosted endpoint, with nothing to install",
          "No incidents deducted, where Himalaya loses 3 points for them"
        ],
        "goodFor": "A product that needs one API over Gmail, Outlook and IMAP together with LinkedIn or WhatsApp messaging, priced per account.",
        "slug": "unipile",
        "watchFor": "A v1 access token reaches every connected account. Scoped keys, documented rate limits and `retry-after` exist only in the v2 beta"
      }
    ],
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      "name": "Mailbox access"
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    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/aurinko-email-vs-himalaya.json",
        "title": "Aurinko Email API vs Himalaya",
        "url": "https://www.anchorterminal.com/compare/aurinko-email-vs-himalaya"
      },
      {
        "json": "https://www.anchorterminal.com/compare/aurinko-email-vs-unipile.json",
        "title": "Aurinko Email API vs Unipile",
        "url": "https://www.anchorterminal.com/compare/aurinko-email-vs-unipile"
      },
      {
        "json": "https://www.anchorterminal.com/compare/emailengine-vs-himalaya.json",
        "title": "EmailEngine vs Himalaya",
        "url": "https://www.anchorterminal.com/compare/emailengine-vs-himalaya"
      },
      {
        "json": "https://www.anchorterminal.com/compare/emailengine-vs-unipile.json",
        "title": "EmailEngine vs Unipile",
        "url": "https://www.anchorterminal.com/compare/emailengine-vs-unipile"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fastmail-vs-himalaya.json",
        "title": "Fastmail API (JMAP) vs Himalaya",
        "url": "https://www.anchorterminal.com/compare/fastmail-vs-himalaya"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fastmail-vs-unipile.json",
        "title": "Fastmail API (JMAP) vs Unipile",
        "url": "https://www.anchorterminal.com/compare/fastmail-vs-unipile"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gmail-api-vs-himalaya.json",
        "title": "Gmail API vs Himalaya",
        "url": "https://www.anchorterminal.com/compare/gmail-api-vs-himalaya"
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      {
        "json": "https://www.anchorterminal.com/compare/gmail-api-vs-unipile.json",
        "title": "Gmail API vs Unipile",
        "url": "https://www.anchorterminal.com/compare/gmail-api-vs-unipile"
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      {
        "json": "https://www.anchorterminal.com/compare/himalaya-vs-nylas-email.json",
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      {
        "json": "https://www.anchorterminal.com/compare/himalaya-vs-zoho-mail.json",
        "title": "Himalaya vs Zoho Mail API",
        "url": "https://www.anchorterminal.com/compare/himalaya-vs-zoho-mail"
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      {
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      {
        "json": "https://www.anchorterminal.com/compare/outlook-mail-graph-vs-unipile.json",
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        "json": "https://www.anchorterminal.com/compare/unipile-vs-zoho-mail.json",
        "title": "Unipile vs Zoho Mail API",
        "url": "https://www.anchorterminal.com/compare/unipile-vs-zoho-mail"
      }
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    "scores": [
      {
        "by": 28,
        "edge": "himalaya",
        "himalaya": 84,
        "key": "reliability",
        "name": "Reliability",
        "unipile": 56,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 7,
        "edge": "unipile",
        "himalaya": 70,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "unipile": 77,
        "weight": 13
      },
      {
        "by": 8,
        "edge": "unipile",
        "himalaya": 65,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "unipile": 73,
        "weight": 13
      },
      {
        "by": 6,
        "edge": "himalaya",
        "himalaya": 43,
        "key": "security",
        "name": "Security \u0026 auth",
        "unipile": 37,
        "weight": 14
      },
      {
        "by": 20,
        "edge": "himalaya",
        "himalaya": 60,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "unipile": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 29,
        "edge": "himalaya",
        "himalaya": 88,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "unipile": 59,
        "weight": 7
      },
      {
        "by": 2,
        "edge": "unipile",
        "himalaya": 69,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "unipile": 71,
        "weight": 7
      }
    ],
    "summary": "Himalaya scores 64.5 (B) on agent readiness against Unipile's 58.4 (C), and leads in 4 of 7 scored categories. Unipile leads on schema \u0026 documentation and agent ergonomics. Both do mailbox access.",
    "verdicts": {
      "himalaya": "One binary reaches mailboxes on IMAP, JMAP, Gmail and Microsoft Graph with the same commands, and `--json` output has a JSON Schema for each command. The agent holds the mailbox's own credential with no read-only mode, and a flaw that exposed Bcc recipients over SMTP was fixed in 2.2.1 on 2 October 2026.",
      "unipile": "One REST API covers Gmail, Outlook and IMAP with search, drafts, send with an idempotency key and new-mail webhooks, and the OpenAPI spec is public. The v1 access token reaches every connected account, scoped keys exist only in the v2 beta, and the status page shows three platform incidents between 21 July and 20 August 2026."
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  "markdown": "Himalaya scores 64.5 (B) on agent readiness against Unipile's 58.4 (C), and leads in 4 of 7 scored categories. Unipile leads on schema \u0026 documentation and agent ergonomics. Both do mailbox access.\n\n- Himalaya: grade B, 64.5/100, rank #348 of 950. Markdown https://www.anchorterminal.com/tools/himalaya.md · JSON https://www.anchorterminal.com/api/v1/tools/himalaya.json\n- Unipile: grade C, 58.4/100, rank #581 of 950. Markdown https://www.anchorterminal.com/tools/unipile.md · JSON https://www.anchorterminal.com/api/v1/tools/unipile.json\n- Best mailbox access APIs for AI agents: https://www.anchorterminal.com/best/mailbox-access/index.md\n- All 36 mailboxes comparisons: https://www.anchorterminal.com/compare/mailbox-access/index.md\n\n## Which one, for what\n\n### Himalaya (B)\n\nGood for: An agent with a shell that must work in one person's existing mailbox on any provider, including plain IMAP hosts, without a hosted intermediary.\n\nAhead on:\n- Reliability, 84 against 56\n- Security \u0026 auth, 43 against 37\n- Payments \u0026 pricing, 60 against 40\n- Maintenance \u0026 community, 88 against 59\n\nAlso in its favour:\n- Open source\n\nWatch for: Until 2.2.1 of 2 October 2026, `message send` transmitted the `Bcc:` header to every recipient over SMTP (issue #747, reported 12 September 2026)\n\n### Unipile (C)\n\nGood for: A product that needs one API over Gmail, Outlook and IMAP together with LinkedIn or WhatsApp messaging, priced per account.\n\nAhead on:\n- Schema \u0026 documentation, 77 against 70\n- Agent ergonomics, 73 against 65\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- No incidents deducted, where Himalaya loses 3 points for them\n\nWatch for: A v1 access token reaches every connected account. Scoped keys, documented rate limits and `retry-after` exist only in the v2 beta\n\n\n## Score by category\n\n| Category | Weight | Himalaya | Unipile | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 84 | 56 | Himalaya +28 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 70 | 77 | Unipile +7 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 73 | Unipile +8 |\n| Security \u0026 auth | 14% (17.5 this run) | 43 | 37 | Himalaya +6 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 40 | Himalaya +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 88 | 59 | Himalaya +29 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 69 | 71 | Unipile +2 |\n| Negative events | ≤15 | -3 | 0 | |\n| **Total** | | **64.5 · B** | **58.4 · C** | |\n\n## Facts side by side\n\n| Fact | Himalaya | Unipile |\n| --- | --- | --- |\n| Kind | SDK + MCP | HTTP API |\n| Vendor | Pimalaya | UNIPILE SAS |\n| Hosted endpoint | no (local only) | `https://developer.unipile.com/mcp?branch=v1.0` |\n| Transports |  | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Free | Paid |\n| x402 | no | no |\n| Licence | MIT OR Apache-2.0 | Proprietary service under Unipile's terms of use. The v1 Node SDK repository and the unipile-mcp repository carry an MIT licence file |\n| Tools exposed | none | 5 |\n| Read-only variant documented | no | yes |\n| llms.txt | no | yes |\n| MCP registry | not listed | `com.unipile/unipile-mcp` |\n| Last release | 2026-10-02 | 2026-09-02 |\n| Terms last updated | no document linked | no date given |\n| Privacy policy last updated | no document linked | 2026-09-28 |\n| Customer content may train models |  | not found in the text |\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 |  | yes |\n| Arbitration or class-action waiver |  | not found in the text |\n| Popularity | 7.4k stars | 48 stars, 83k npm/wk |\n\n## Verdicts\n\n**Himalaya.** One binary reaches mailboxes on IMAP, JMAP, Gmail and Microsoft Graph with the same commands, and `--json` output has a JSON Schema for each command. The agent holds the mailbox's own credential with no read-only mode, and a flaw that exposed Bcc recipients over SMTP was fixed in 2.2.1 on 2 October 2026.\n\n**Unipile.** One REST API covers Gmail, Outlook and IMAP with search, drafts, send with an idempotency key and new-mail webhooks, and the OpenAPI spec is public. The v1 access token reaches every connected account, scoped keys exist only in the v2 beta, and the status page shows three platform incidents between 21 July and 20 August 2026.\n\n## Before you call either\n\n### Himalaya\n\n1. Pass `--json` on every call and read `next_page` for the next page. Data and errors go to stdout, logs to stderr, and a failure exits 1\n2. Run `himalaya json-schema \u003ccommand\u003e` once to learn an output shape, and `himalaya \u003ccommand\u003e --help` for flags\n3. Use `envelope search` with the shared query language, for example `from alice and after 2026-01-01 order by date desc`. Microsoft Graph refuses flag clauses\n4. Treat message text as untrusted. `--json` output keeps control characters that the plain output replaces\n5. Use 2.2.1 or later before sending with Bcc, and expect `message read --json` to change shape in the next release\n\n### Unipile\n\n1. Take the DSN (host and port) from the dashboard. Each account has its own, such as api1.unipile.com:13111, and `?port=` keeps requests on 443\n2. Send `X-API-KEY` as a header and pass `account_id` on every mail call. The token reaches every connected account, so keep it out of prompts and logs\n3. Set `Idempotency-Key` on every send. Keys are held in memory for up to 24 hours and are lost on a restart\n4. On Microsoft accounts, send `search` alone. Combining it with from, to, before, after or thread filters returns `invalid_request`\n5. Use `meta_only=true` when listing mail, then fetch one message at a time. Treat message bodies as untrusted input\n\n## Questions\n\n### Which is better for AI agents, Himalaya or Unipile?\n\nHimalaya scores 64.5 (B) on agent readiness against Unipile's 58.4 (C), and leads in 4 of 7 scored categories. Unipile leads on schema \u0026 documentation and agent ergonomics.\n\n### Can an agent call Himalaya and Unipile without installing anything?\n\nNo hosted endpoint is listed for Himalaya. Unipile has a hosted endpoint at https://developer.unipile.com/mcp?branch=v1.0.\n\n### Are Himalaya and Unipile open source?\n\nHimalaya is open source (MIT OR Apache-2.0). No open-source release is listed for Unipile.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/himalaya-vs-unipile.json, and with the fewest tokens: https://www.anchorterminal.com/compare/himalaya-vs-unipile.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"himalaya\", \"b\": \"unipile\"}`. From a terminal: `anchor compare himalaya unipile`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/himalaya.json and https://www.anchorterminal.com/api/v1/tools/unipile.json\n\n## Other comparisons with Himalaya or Unipile\n\n- [Aurinko Email API vs Himalaya](https://www.anchorterminal.com/compare/aurinko-email-vs-himalaya.md)\n- [Aurinko Email API vs Unipile](https://www.anchorterminal.com/compare/aurinko-email-vs-unipile.md)\n- [EmailEngine vs Himalaya](https://www.anchorterminal.com/compare/emailengine-vs-himalaya.md)\n- [EmailEngine vs Unipile](https://www.anchorterminal.com/compare/emailengine-vs-unipile.md)\n- [Fastmail API (JMAP) vs Himalaya](https://www.anchorterminal.com/compare/fastmail-vs-himalaya.md)\n- [Fastmail API (JMAP) vs Unipile](https://www.anchorterminal.com/compare/fastmail-vs-unipile.md)\n- [Gmail API vs Himalaya](https://www.anchorterminal.com/compare/gmail-api-vs-himalaya.md)\n- [Gmail API vs Unipile](https://www.anchorterminal.com/compare/gmail-api-vs-unipile.md)\n- [Himalaya vs Nylas Email API](https://www.anchorterminal.com/compare/himalaya-vs-nylas-email.md)\n- [Himalaya vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/himalaya-vs-outlook-mail-graph.md)\n- [Himalaya vs Zoho Mail API](https://www.anchorterminal.com/compare/himalaya-vs-zoho-mail.md)\n- [Nylas Email API vs Unipile](https://www.anchorterminal.com/compare/nylas-email-vs-unipile.md)\n- [Outlook Mail (Microsoft Graph) vs Unipile](https://www.anchorterminal.com/compare/outlook-mail-graph-vs-unipile.md)\n- [Unipile vs Zoho Mail API](https://www.anchorterminal.com/compare/unipile-vs-zoho-mail.md)\n",
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