Best Microsoft Exchange Online Alternatives in 2026
Updated
20 platforms from email encryption software ranked against Microsoft Exchange Online on the same published basis.
- 1Microsoft Exchange Online vs Send It Secure
- 2Microsoft Exchange Online vs DataMotion Secure Email Exchange
- 3Microsoft Exchange Online vs MailHippo
- 4Microsoft Exchange Online vs Trustifi Outbound Shield
- 5Microsoft Exchange Online vs Virtru Data Security Platform
- 6Microsoft Exchange Online vs c.Email
- 7Microsoft Exchange Online vs FlowCrypt
- 8Microsoft Exchange Online vs gpg4o
- 9Microsoft Exchange Online vs Lockbin
- 10Microsoft Exchange Online vs PDF Postman
- 11Microsoft Exchange Online vs SecureMyEmail
- 12Microsoft Exchange Online vs Encryptomatic OpenPGP
- 13Microsoft Exchange Online vs Mailvelope
- 14Microsoft Exchange Online vs Mimecast Secure Messaging
- 15Microsoft Exchange Online vs Gpg4win
- 16Microsoft Exchange Online vs OpenText Core Email Message Privacy
- 17Microsoft Exchange Online vs Proofpoint Email DLP and Encryption
- 18Microsoft Exchange Online vs RMail
- 19Microsoft Exchange Online vs Secure Message
- 20Microsoft Exchange Online vs Sophos Secure Message
Microsoft Exchange Online alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Send It Secure | 7.3 | Free plan | $15/mo | API, Browser, iOS, Web, Windows |
| 2 | DataMotion Secure Email Exchange | 6.9 | No | — | Android, API, iOS, Web |
| 3 | MailHippo | 6.8 | No | $4.95/mo | API, Web, Windows |
| 4 | Trustifi Outbound Shield | 6.7 | No | — | API, Browser, Mac, Web, Windows |
| 5 | Virtru Data Security Platform | 6.7 | No | $119/mo | API, self-hosted, Web, Windows |
| 6 | c.Email | 5.9 | Free plan | Free | Browser |
| 7 | FlowCrypt | 5.9 | Free plan | Free | Browser |
| 8 | gpg4o | 5.9 | Free plan | €99.95/mo | Windows |
| 9 | Lockbin | 5.9 | Free plan | $10/mo | Linux, Mac, Web, Windows |
| 10 | PDF Postman | 5.6 | No | $79.99/mo | Windows |
| 11 | SecureMyEmail | 5.6 | Free plan | Free | Windows, Mac, iOS, Android |
| 12 | Encryptomatic OpenPGP | 5.5 | No | $2.50/mo | Windows |
| 13 | Mailvelope | 5.5 | No | €3/mo | Browser, Web |
| 14 | Mimecast Secure Messaging | 5.5 | No | — | Android, iOS, Mac, Web, Windows |
| 15 | Gpg4win | 5.4 | No | — | Windows |
| 16 | OpenText Core Email Message Privacy | 5.4 | No | — | Web |
| 17 | Proofpoint Email DLP and Encryption | 5.4 | No | — | Android, iOS, Web, Windows |
| 18 | RMail | 5.4 | No | — | Web, Windows, Mac |
| 19 | Secure Message | 5.3 | Free plan | — | Linux, self-hosted, Web |
| 20 | Sophos Secure Message | 5.3 | No | — | — |
The sponsored alternative slot on this page is labelled Sponsored.
Questions about Microsoft Exchange Online alternatives
What is the best alternative to Microsoft Exchange Online?
Send It Secure, number 1 in email encryption software with a score of 7.3 out of 10. The others here: DataMotion Secure Email Exchange, MailHippo, Trustifi Outbound Shield and 16 more.
What is the best free alternative to Microsoft Exchange Online?
Send It Secure is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.