# CloudPost vs EmailEngine (slim)

> EmailEngine scores 71.4 (BB) to CloudPost's 20.6 (F) for mailbox access. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/cloudpost-vs-emailengine.md (~2,300 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/cloudpost-vs-emailengine.json · canonical https://www.anchorterminal.com/compare/cloudpost-vs-emailengine
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-10

EmailEngine scores 71.4 (BB) on agent readiness against CloudPost's 20.6 (F), and leads in every scored category. Both do mailbox access.

- CloudPost: F 20.6, rank #956 of 961 · https://www.anchorterminal.com/tools/cloudpost.min.md
- EmailEngine: BB 71.4, rank #127 of 961 · https://www.anchorterminal.com/tools/emailengine.min.md
- CloudPost, good for A person who wants an agent to triage and answer their own iCloud Mail from Claude or another OAuth-capable MCP client without running an IMAP server locally. Also A hosted endpoint, with nothing to install; No incidents deducted, where EmailEngine loses 3 points for them.
- EmailEngine, good for A team that must keep mailbox access on its own infrastructure, has many mailboxes across Gmail, Microsoft 365 and IMAP, and can run a server and Redis. Ahead on Reliability, 79 against 15; Schema & documentation, 91 against 8; Agent ergonomics, 80 against 23; Security & auth, 71 against 36; Payments & pricing, 40 against 20; Maintenance & community, 81 against 33; Transparency & trust, 72 against 10. Also Agent-ready, a grade of BB or better.

| Category | CloudPost | EmailEngine |
| --- | --- | --- |
| Reliability (16%) | 15 | 79 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 8 | 91 |
| Agent ergonomics (13%) | 23 | 80 |
| Security & auth (14%) | 36 | 71 |
| Payments & pricing (10%) | 20 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 81 |
| Transparency & trust (7%) | 10 | 72 |

| Fact (where they differ) | CloudPost | EmailEngine |
| --- | --- | --- |
| Kind | MCP server | HTTP API |
| Vendor | CloudPost (James Brooks) | Postal Systems OÜ |
| Hosted endpoint | `https://cloudpost.ing/api/mcp/mail` | no (local only) |
| Auth | OAuth | API key |
| Pricing | Free | Paid |
| Licence | Proprietary. No licence or terms published | Source available under the EmailEngine licence agreement, version 2.1 of 17 October 2023. Not open source. The PHP SDK is MIT |
| Tools exposed | 9 | none |
| llms.txt | no | yes |
| Last release | 2026-10-10 | 2026-10-05 |
| Terms last updated | no document linked | no date given |
| Privacy policy last updated | no document linked | 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 |  | not found in the text |
| Popularity | none | 2.2k stars, 388 npm/wk |