Posteo vs GMX
Posteo wins on privacy, they tie on price and GMX wins on features. Every fact below was checked on or before 25 October 2026.
Posteo or GMX: which should you choose?
- Posteo suits you best if you want a company that isn't funded by advertising; open-source apps; and an account that doesn't need your phone number or ID.
- GMX suits you best if you want a mailbox that costs nothing; a free plan to start on; and more space for your mail: 65 GB.
| Feature | Posteo | GMX |
|---|---|---|
| Overall | 4.5 | 3.5 |
| Privacy | 4.5 | 2.0 |
| Price | 5.0 | 5.0 |
| Features | 3.0 | 4.0 |
| Cheapest plan | Posteo €1 a month | Free Free (paid plans only for German and Austrian residents) |
| Free plan | No | Yes, with adverts |
| Storage | 4 GB | 65 GB |
| Your own domain | No | No |
| End-to-end encryption | Optional (PGP or encrypted storage) | No |
| Company based in | Germany | Germany |
| Your data is kept in | Germany | Germany (European data centres) |
| Founded | 2009 | 1997 |
| Free trial | No, €1 a month from the start | Free |
| Funded by advertising | No | Yes, or its parent company is |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes (posteo.de only) | Up to 10 addresses |
| Open-source apps | ✓ Yes | No |
| Sign up without ID | ✓ Yes | No |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
Where they differ
- Posteo's cheapest plan is Posteo (€1 a month); GMX's is Free (Free (paid plans only for German and Austrian residents)).
- For free, Posteo gives you no free plan, and GMX a free plan (with adverts).
- Posteo comes with 4 GB of storage and GMX with 65 GB of storage.
- Data location: Germany for Posteo, Germany (European data centres) for GMX.
- Posteo offers optional encryption (PGP or encrypted storage); GMX doesn't encrypt mail end to end.
- Only GMX is part of an advertising business.
- For extra addresses, Posteo has yes (posteo.de only) and GMX has up to 10 addresses.
Posteo and GMX: your questions
Which is more private, Posteo or GMX?
Posteo scores 4.5 out of 5 for privacy and GMX 2. Posteo gives you a company that isn't funded by advertising, open-source apps and an account that doesn't need your phone number or ID.
Which is cheaper, Posteo or GMX?
GMX costs nothing to start (Free (paid plans only for German and Austrian residents)). Posteo's cheapest plan, Posteo, is €1 a month.
Do Posteo and GMX work with my own domain?
No, neither lets you use your own domain, so your address stays on theirs.
Where do Posteo and GMX keep my email?
Posteo keeps it in Germany. GMX keeps it in Germany (European data centres).
Prices and the latest news
I haven't seen either change its price since I started checking on 22 October 2026.
The latest headlines: Posteo news · GMX news.
Alternatives to Posteo and GMX
Posteo vs mailbox.org · GMX vs mailbox.org · Posteo vs Proton Mail · GMX vs Proton Mail · Posteo vs Tuta · GMX vs Tuta
Moving your email
Moving to Posteo · Moving from Posteo. Or see all my switching guides.