GMX vs one.com
In short: one.com wins on privacy, GMX wins on price, and GMX wins on features. The full comparison is below, last checked 25 October 2026.
Which should you choose?
- Choose GMX if you want a free plan before you pay anything; 65 GB of storage; and calendar and contacts in the same account.
- one.com suits you best if you want a company that isn't funded by advertising and an address on your own domain.
| Feature | GMX | one.com |
|---|---|---|
| Overall | 3.5 | Not rated |
| Privacy | 2.0 | 2.5 |
| Price | 5.0 | Not rated |
| Features | 4.0 | 3.0 |
| Cheapest plan | Free Free (paid plans only for German and Austrian residents) | Email Not confirmed |
| Free plan | Yes, with adverts | No |
| Storage | 65 GB | 3 GB |
| Your own domain | No | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Germany | Denmark |
| Your data is kept in | Germany (European data centres) | Denmark |
| Founded | 1997 | Unknown |
| Free trial | Free | 15-day money-back guarantee |
| Funded by advertising | Yes, or its parent company is | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | No |
| Aliases | Up to 10 addresses | Yes |
| Open-source apps | No | No |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
Where they differ
- GMX's cheapest plan is Free (Free (paid plans only for German and Austrian residents)); one.com's is Email (Not confirmed).
- GMX has a free plan (with adverts); one.com has no free plan.
- Space: GMX gives 65 GB of storage, one.com 3 GB of storage.
- Your mail is stored in Germany (European data centres) with GMX, and in Denmark with one.com.
- The companies sit under different laws: GMX in Germany, one.com in Denmark.
- You can use your own domain with one.com, but not with GMX.
- GMX (or its parent company) makes money from advertising; one.com doesn't.
- Aliases: GMX offers up to 10 addresses, one.com yes.
GMX and one.com: your questions
Is GMX more private than one.com?
one.com scores 2.5 out of 5 for privacy and GMX 2. one.com gives you a company that isn't funded by advertising.
Can I use my own domain with GMX or one.com?
Only one.com does (Yes). With GMX your address stays on its own domain.
Where is my email stored with GMX and one.com?
GMX keeps it in Germany (European data centres). one.com keeps it in Denmark.
Prices and the latest news
No price changes for either since 25 October 2026. I check regularly and add any change here with its date.
The latest headlines: GMX news · one.com news.
Not sold on either? Try these
GMX vs mailbox.org · one.com vs mailbox.org · GMX vs Posteo · one.com vs Posteo · GMX vs Proton Mail · one.com vs Proton Mail
How to switch
Moving between any two providers works the same way. Pick your two providers for the steps.