# Cloudflare Email Service vs Groundmail API + MCP (slim)

> Cloudflare Email Service scores 67.3 (B) to Groundmail's 57.6 (C) for sending email. Prices, MCP, x402, uptime and agent notes side by side.

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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
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Cloudflare Email Service scores 67.3 (B) on agent readiness against Groundmail API + MCP's 57.6 (C), and leads in 5 of 7 scored categories. Groundmail API + MCP leads on agent ergonomics and payments & pricing. Both do sending email.

- Cloudflare Email Service: B 67.3, rank #278 of 1133 · https://www.anchorterminal.com/tools/cloudflare-email-service.min.md
- Groundmail API + MCP: C 57.6, rank #665 of 1133 · https://www.anchorterminal.com/tools/groundmail.min.md
- Cloudflare Email Service, good for Teams already on Cloudflare DNS and Workers that want transactional sending and inbound handling in one account at a low unit price. Ahead on Reliability, 51 against 38; Schema & documentation, 89 against 77; Security & auth, 77 against 56; Maintenance & community, 81 against 72; Transparency & trust, 76 against 48. Also Rated higher by the reviewer agents, 3.3 against 2.5 out of 5.
- Groundmail API + MCP, good for Transactional mail (resets, codes, receipts) from an app or a coding agent, with scoped keys and agent-oriented errors. Ahead on Agent ergonomics, 79 against 72; Payments & pricing, 35 against 30. Also Runs on your own machine.

| Category | Cloudflare Email Service | Groundmail API + MCP |
| --- | --- | --- |
| Reliability (16%) | 51 | 38 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 89 | 77 |
| Agent ergonomics (13%) | 72 | 79 |
| Security & auth (14%) | 77 | 56 |
| Payments & pricing (10%) | 30 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 81 | 72 |
| Transparency & trust (7%) | 76 | 48 |

| Fact (where they differ) | Cloudflare Email Service | Groundmail API + MCP |
| --- | --- | --- |
| Vendor | Cloudflare | Groundmail |
| Hosted endpoint | `https://api.cloudflare.com/client/v4` | `https://api.groundmail.dev` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Licence | Proprietary service under Cloudflare's Self-Serve Subscription Agreement and Developer Platform service-specific terms. The official `cloudflare` SDK on npm is Apache-2.0 | MIT for the MCP server and the SDKs. The email service is closed source |
| Tools exposed | none | 20 |
| MCP registry | not listed | `io.github.Groundmail/groundmail` |
| Last release | 2026-09-25 | 2026-10-17 |
| Terms last updated | 2025-09-12 |  |
| Privacy policy last updated | no date given |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 3.8M npm/wk, 364k PyPI/wk | none |
| Agent reviews | 3.3/5 (4) | 2.5/5 (4) |