Best 21CN Mail Alternatives in 2026
Updated
20 platforms from personal email services ranked against 21CN Mail on the same published basis.
- 121CN Mail vs Fastmail Masked Email
- 221CN Mail vs Inbox.eu Business Email
- 321CN Mail vs Gmail
- 421CN Mail vs Outlook.com
- 521CN Mail vs Proton Mail
- 621CN Mail vs Zoho Mail
- 721CN Mail vs Yahoo Mail
- 821CN Mail vs eclipso Mail Europe
- 921CN Mail vs Thelemail
- 1021CN Mail vs Inbox.lv
- 1121CN Mail vs Yandex Mail
- 1221CN Mail vs mail.ch
- 1321CN Mail vs Mailo
- 1421CN Mail vs mail.co.uk
- 1521CN Mail vs iCloud Mail
- 1621CN Mail vs Mail.ee
- 1721CN Mail vs mail.de
- 1821CN Mail vs Mail.com
- 1921CN Mail vs Heaven Mail
- 2021CN Mail vs WEB.DE Mail
21CN Mail alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Fastmail Masked Email | 8.2 | No | $4/mo | Android, API, iOS, Linux, Mac, Web, Windows |
| 2 | Inbox.eu Business Email | 7.9 | No | €0.83/mo | Android, API, iOS, Web |
| 3 | Gmail | 7.6 | Free plan | $1.99/mo | Android, iOS, Web |
| 4 | Outlook.com | 7.4 | Free plan | $1.99/mo | Android, iOS, Mac |
| 5 | Proton Mail | 7.4 | Free plan | Free | Web, Windows, Mac, Linux, iOS, Android |
| 6 | Zoho Mail | 7.4 | Free plan | $0.08/mo | Android, iOS, Linux, Mac, Web, Windows |
| 7 | Yahoo Mail | 7.3 | Free plan | — | Android, iOS, Web |
| 8 | eclipso Mail Europe | 7.3 | Free plan | €1.49/mo | Android, iOS, Mac, Web, Windows |
| 9 | Thelemail | 7.2 | Free plan | €2/mo | Android, iOS, Mac, Web |
| 10 | Inbox.lv | 7.2 | Free plan | €1.17/mo | Android, iOS, Web |
| 11 | Yandex Mail | 7.1 | Free plan | Free | Web, iOS, Android |
| 12 | mail.ch | 7.1 | Free plan | CHF 3.49/mo | Web, Windows, Mac, iOS, Android |
| 13 | Mailo | 7.1 | Free plan | €1.50/mo | Android, iOS, Web |
| 14 | mail.co.uk | 7.0 | Free plan | £2.49/mo | Web, iOS, Android |
| 15 | iCloud Mail | 6.9 | No | — | Web, Windows, Mac, iOS |
| 16 | Mail.ee | 6.9 | Free plan | €1.99/mo | Web, iOS, Android |
| 17 | mail.de | 6.9 | Free plan | €0.99/mo | Web, iOS, Android |
| 18 | Mail.com | 6.8 | Free plan | $9.99/mo | Web, iOS, Android |
| 19 | Heaven Mail | 6.8 | Free plan | $45/mo | Android, iOS, Linux, Mac, Web, Windows |
| 20 | WEB.DE Mail | 6.7 | No | €3.99/mo | Web, Windows, Mac, Linux, iOS, Android |
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Questions about 21CN Mail alternatives
What is the best alternative to 21CN Mail?
Fastmail Masked Email, number 1 in personal email services with a score of 8.2 out of 10. The others here: Inbox.eu Business Email, Gmail, Outlook.com and 16 more.
What is the best free alternative to 21CN Mail?
Gmail is the best-ranked alternative with a free plan. 16 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.