Side by side
4SecureMail vs Posteo
Both stand on private email services. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free trial AndroidiPhoneLinux+3
Choose 4SecureMail if you want hosted email with standard client support, SecureVault and business options such as custom domains. Look elsewhere if you need automatic contact or calendar synchronization, or a free plan.
Visit 4SecureMail
Paid AndroidiPhoneMac+2
Posteo combines encrypted mail, broad client access, and privacy-oriented account practices. Users should compare the paid plans and storage allowances with their mailbox needs.
Visit PosteoThe facts
| 4SecureMail | Posteo | |
|---|---|---|
| Free plan | A free trial | No |
| Open source | Not published | Not published |
| Runs on | Android, iPhone, Linux, Mac, Web, Windows | Android, iPhone, Mac, Web, Windows |
| Lowest paid plan | Personal Basic: $59.99 a year | Posteo: €13 a month |
| Plans published | 10 | 2 |
| Maker | Not published | Posteo |
| Website | 4securemail.com | posteo.de |
| On private email services | #18 of 29 | #22 of 29 |
4SecureMail: what it does well
- Works with POP, IMAP and SMTP email clients.
- SecureVault lets outside recipients read and reply through a web link.
- Includes SpamAssassin and a server-based virus scanner.
- Supports mobile push notifications and multiple connected devices.
- Available on Android, iOS, Linux, macOS, web and Windows.
What to know first
- No free plan is available.
- Personal Basic includes 500 MB storage and no custom domain.
- Automatic contact and calendar synchronization is not supported.
- Off-site legal archiving costs extra.
Posteo: what it does well
- End-to-end encryption and integrated PGP
- TOTP and FIDO2 two-factor authentication
- No data mining, advertising, or behavior tracking
- IMAP, SMTP, and POP3 support
- Android and iPhone apps with push notifications
What to know first
- No free plan
- Mailbox plan provides 4 GB storage
- Posteo plan costs €13 a month
- Billed quarterly for the listed Posteo plan
Alternatives to 4SecureMail Alternatives to Posteo The whole list