# EmailEngine vs Outlook Mail (Microsoft Graph) (slim)

> EmailEngine scores 71.4 (BB) on agent readiness against Outlook Mail (Microsoft Graph)'s 66.3 (B), and leads in 3 of 7 scored categories. Both do mailbox read. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/emailengine-vs-outlook-mail-graph.md (~2,050 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/emailengine-vs-outlook-mail-graph.json · canonical https://www.anchorterminal.com/compare/emailengine-vs-outlook-mail-graph
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

EmailEngine scores 71.4 (BB) on agent readiness against Outlook Mail (Microsoft Graph)'s 66.3 (B), and leads in 3 of 7 scored categories. Both do mailbox read.

- EmailEngine: BB 71.4, rank #106 of 629 · https://www.anchorterminal.com/tools/emailengine.min.md
- Outlook Mail (Microsoft Graph): B 66.3, rank #221 of 629 · https://www.anchorterminal.com/tools/outlook-mail-graph.min.md
- 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 60; Payments & pricing, 40 against 35; Maintenance & community, 81 against 76. Also Agent-ready, a grade of BB or better.
- Outlook Mail (Microsoft Graph), good for Agents working in Microsoft 365 or Outlook.com mailboxes that need scoped reading, drafting, sending and incremental sync. Also A hosted endpoint, with nothing to install.

| Category | EmailEngine | Outlook Mail (Microsoft Graph) |
| --- | --- | --- |
| Reliability (16%) | 79 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 91 | 93 |
| Agent ergonomics (13%) | 80 | 81 |
| Security & auth (14%) | 71 | 71 |
| Payments & pricing (10%) | 40 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 81 | 76 |
| Transparency & trust (7%) | 72 | 75 |

| Fact (where they differ) | EmailEngine | Outlook Mail (Microsoft Graph) |
| --- | --- | --- |
| Vendor | Postal Systems OÜ | Microsoft |
| Hosted endpoint | no (local only) | `https://graph.microsoft.com/v1.0` |
| Auth | API key | OAuth |
| Pricing | Paid | Your plan |
| Licence | Source available under the EmailEngine licence agreement, version 2.1 of 17 October 2023. Not open source. The PHP SDK is MIT | MIT (SDKs) |
| Tools exposed | none | 10 |
| llms.txt | yes | no |
| Last release | 2026-10-05 | 2026-10-06 |
| Terms last updated | no date given | 2025-10-01 |
| Privacy policy last updated | no date given | 2026-09-01 |
| Customer content may train models | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Popularity | 2.2k stars, 388 npm/wk | 835 stars, 2.9M npm/wk, 1.6M PyPI/wk |