GMX vs Zimbra
On privacy it's GMX. On price it's GMX. On features it's GMX. Here's everything side by side, last checked 25 October 2026.
GMX or Zimbra: which should you choose?
- Go for GMX if you'd like your email to stay in Germany (European data centres).
- Zimbra suits you best if you want email from a company that doesn't make money from adverts; an address on your own domain; and open-source apps anyone can check.
| Feature | GMX | Zimbra |
|---|---|---|
| Overall | 3.5 | Not rated |
| Privacy | 2.0 | Not rated |
| Price | 5.0 | Not rated |
| Features | 4.0 | Not rated |
| Cheapest plan | Free Free (paid plans only for German and Austrian residents) | Open source Free |
| Free plan | Yes, with adverts | Open-source edition; paid Network Edition |
| Storage | 65 GB | Not confirmed |
| Your own domain | No | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Germany | United States |
| Your data is kept in | Germany (European data centres) | Your own server |
| Founded | 1997 | Unknown |
| Free trial | Free | Unknown |
| 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 | ✓ Yes |
| Aliases | Up to 10 addresses | Yes |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 22 October 2026 |
Want to add another? Open this in the compare tool.
The key differences
- GMX's cheapest plan is Free (Free (paid plans only for German and Austrian residents)); Zimbra's is Open source (Free).
- GMX has a free plan (with adverts); Zimbra has Open-source edition; paid Network Edition.
- Space: GMX gives 65 GB of storage, Zimbra storage not confirmed.
- Data location: Germany (European data centres) for GMX, Your own server for Zimbra.
- The companies sit under different laws: GMX in Germany, Zimbra in United States.
- You can use your own domain with Zimbra, but not with GMX.
- GMX (or its parent company) makes money from advertising; Zimbra doesn't.
- Aliases: GMX offers up to 10 addresses, Zimbra yes.
Questions people ask
Can I use my own domain with GMX or Zimbra?
Only Zimbra does (Yes). With GMX your address stays on its own domain.
Where is my email stored with GMX and Zimbra?
GMX keeps it in Germany (European data centres). Zimbra keeps it in Your own server.
Recent price changes
No price changes for either since 22 October 2026. I check regularly and add any change here with its date.
The latest headlines: GMX news · Zimbra news.
Alternatives to GMX and Zimbra
GMX vs Posteo · Zimbra vs Posteo · GMX vs mailbox.org · Zimbra vs mailbox.org · GMX vs Proton Mail · Zimbra vs Proton Mail
How to switch
Moving between any two providers works the same way. Pick your two providers for the steps.