# Mailbox access compared head to head (slim)

> 36 head-to-head comparisons of mailbox access APIs for AI agents, grouped by the job each pair shares, with benchmark scores for both sides.

- Full: https://www.anchorterminal.com/compare/mailbox-access/index.md (~1,550 tokens) · this version ~1,480 tokens · JSON https://www.anchorterminal.com/compare/mailbox-access/index.json · canonical https://www.anchorterminal.com/compare/mailbox-access/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

- Ranked table: https://www.anchorterminal.com/categories/mailbox-access.md
- Shortlist and picks by need: https://www.anchorterminal.com/best/mailbox-access/index.md

## Ranked

1. [Nylas Email API](https://www.anchorterminal.com/tools/nylas-email.md) A 78.7
2. [Gmail API](https://www.anchorterminal.com/tools/gmail-api.md) BB 77.8
3. [EmailEngine](https://www.anchorterminal.com/tools/emailengine.md) BB 71.4
4. [Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/tools/outlook-mail-graph.md) B 66.3
5. [Himalaya](https://www.anchorterminal.com/tools/himalaya.md) B 64.5
6. [Unipile](https://www.anchorterminal.com/tools/unipile.md) C 58.4
7. [Fastmail API (JMAP)](https://www.anchorterminal.com/tools/fastmail.md) C 54.1
8. [Zoho Mail API](https://www.anchorterminal.com/tools/zoho-mail.md) D 53.8
9. [Aurinko Email API](https://www.anchorterminal.com/tools/aurinko-email.md) E 44.2

## Mailbox access

- [Aurinko Email API vs EmailEngine](https://www.anchorterminal.com/compare/aurinko-email-vs-emailengine.md): E 44.2 vs BB 71.4
- [Aurinko Email API vs Fastmail API (JMAP)](https://www.anchorterminal.com/compare/aurinko-email-vs-fastmail.md): E 44.2 vs C 54.1
- [Aurinko Email API vs Gmail API](https://www.anchorterminal.com/compare/aurinko-email-vs-gmail-api.md): E 44.2 vs BB 77.8
- [Aurinko Email API vs Himalaya](https://www.anchorterminal.com/compare/aurinko-email-vs-himalaya.md): E 44.2 vs B 64.5
- [Aurinko Email API vs Nylas Email API](https://www.anchorterminal.com/compare/aurinko-email-vs-nylas-email.md): E 44.2 vs A 78.7
- [Aurinko Email API vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/aurinko-email-vs-outlook-mail-graph.md): E 44.2 vs B 66.3
- [Aurinko Email API vs Unipile](https://www.anchorterminal.com/compare/aurinko-email-vs-unipile.md): E 44.2 vs C 58.4
- [Aurinko Email API vs Zoho Mail API](https://www.anchorterminal.com/compare/aurinko-email-vs-zoho-mail.md): E 44.2 vs D 53.8
- [EmailEngine vs Fastmail API (JMAP)](https://www.anchorterminal.com/compare/emailengine-vs-fastmail.md): BB 71.4 vs C 54.1
- [EmailEngine vs Gmail API](https://www.anchorterminal.com/compare/emailengine-vs-gmail-api.md): BB 71.4 vs BB 77.8
- [EmailEngine vs Himalaya](https://www.anchorterminal.com/compare/emailengine-vs-himalaya.md): BB 71.4 vs B 64.5
- [EmailEngine vs Nylas Email API](https://www.anchorterminal.com/compare/emailengine-vs-nylas-email.md): BB 71.4 vs A 78.7
- [EmailEngine vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/emailengine-vs-outlook-mail-graph.md): BB 71.4 vs B 66.3
- [EmailEngine vs Unipile](https://www.anchorterminal.com/compare/emailengine-vs-unipile.md): BB 71.4 vs C 58.4
- [EmailEngine vs Zoho Mail API](https://www.anchorterminal.com/compare/emailengine-vs-zoho-mail.md): BB 71.4 vs D 53.8
- [Fastmail API (JMAP) vs Gmail API](https://www.anchorterminal.com/compare/fastmail-vs-gmail-api.md): C 54.1 vs BB 77.8
- [Fastmail API (JMAP) vs Himalaya](https://www.anchorterminal.com/compare/fastmail-vs-himalaya.md): C 54.1 vs B 64.5
- [Fastmail API (JMAP) vs Nylas Email API](https://www.anchorterminal.com/compare/fastmail-vs-nylas-email.md): C 54.1 vs A 78.7
- [Fastmail API (JMAP) vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/fastmail-vs-outlook-mail-graph.md): C 54.1 vs B 66.3
- [Fastmail API (JMAP) vs Unipile](https://www.anchorterminal.com/compare/fastmail-vs-unipile.md): C 54.1 vs C 58.4
- [Fastmail API (JMAP) vs Zoho Mail API](https://www.anchorterminal.com/compare/fastmail-vs-zoho-mail.md): C 54.1 vs D 53.8
- [Gmail API vs Himalaya](https://www.anchorterminal.com/compare/gmail-api-vs-himalaya.md): BB 77.8 vs B 64.5
- [Gmail API vs Nylas Email API](https://www.anchorterminal.com/compare/gmail-api-vs-nylas-email.md): BB 77.8 vs A 78.7
- [Gmail API vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/gmail-api-vs-outlook-mail-graph.md): BB 77.8 vs B 66.3
- [Gmail API vs Unipile](https://www.anchorterminal.com/compare/gmail-api-vs-unipile.md): BB 77.8 vs C 58.4
- [Gmail API vs Zoho Mail API](https://www.anchorterminal.com/compare/gmail-api-vs-zoho-mail.md): BB 77.8 vs D 53.8
- [Himalaya vs Nylas Email API](https://www.anchorterminal.com/compare/himalaya-vs-nylas-email.md): B 64.5 vs A 78.7
- [Himalaya vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/himalaya-vs-outlook-mail-graph.md): B 64.5 vs B 66.3
- [Himalaya vs Unipile](https://www.anchorterminal.com/compare/himalaya-vs-unipile.md): B 64.5 vs C 58.4
- [Himalaya vs Zoho Mail API](https://www.anchorterminal.com/compare/himalaya-vs-zoho-mail.md): B 64.5 vs D 53.8
- [Nylas Email API vs Outlook Mail (Microsoft Graph)](https://www.anchorterminal.com/compare/nylas-email-vs-outlook-mail-graph.md): A 78.7 vs B 66.3
- [Nylas Email API vs Unipile](https://www.anchorterminal.com/compare/nylas-email-vs-unipile.md): A 78.7 vs C 58.4
- [Nylas Email API vs Zoho Mail API](https://www.anchorterminal.com/compare/nylas-email-vs-zoho-mail.md): A 78.7 vs D 53.8
- [Outlook Mail (Microsoft Graph) vs Unipile](https://www.anchorterminal.com/compare/outlook-mail-graph-vs-unipile.md): B 66.3 vs C 58.4
- [Outlook Mail (Microsoft Graph) vs Zoho Mail API](https://www.anchorterminal.com/compare/outlook-mail-graph-vs-zoho-mail.md): B 66.3 vs D 53.8
- [Unipile vs Zoho Mail API](https://www.anchorterminal.com/compare/unipile-vs-zoho-mail.md): C 58.4 vs D 53.8