GMX vs Kualo
In short: Kualo 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?
- GMX is the better pick if you want a mailbox that costs nothing; to try it free first; and 65 GB of storage.
- Kualo suits you best if you want a provider with no advertising business behind it and email at your own domain name.
| Feature | GMX | Kualo |
|---|---|---|
| Overall | 3.5 | 3.0 |
| Privacy | 2.0 | 2.5 |
| Price | 5.0 | 3.5 |
| Features | 4.0 | 3.5 |
| Cheapest plan | Free Free (paid plans only for German and Austrian residents) | Zimbra Professional Email From £3.99 per user a month (10 GB Zimbra mailbox, longer terms) |
| Free plan | Yes, with adverts | No |
| Storage | 65 GB | 10 GB |
| Your own domain | No | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Germany | United Kingdom |
| Your data is kept in | Germany (European data centres) | United Kingdom |
| Founded | 1997 | 2000 |
| Free trial | Free | 60-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
- Cheapest plans: GMX Free, Free (paid plans only for German and Austrian residents). Kualo Zimbra Professional Email, From £3.99 per user a month (10 GB Zimbra mailbox, longer terms).
- For free, GMX gives you a free plan (with adverts), and Kualo no free plan.
- GMX comes with 65 GB of storage and Kualo with 10 GB of storage.
- Data location: Germany (European data centres) for GMX, United Kingdom for Kualo.
- GMX is based in Germany and Kualo in the United Kingdom, so different privacy laws apply.
- Kualo lets you bring your own domain name; GMX doesn't.
- Only GMX is part of an advertising business.
- For extra addresses, GMX has up to 10 addresses and Kualo has yes.
Common questions
Which is more private, GMX or Kualo?
Kualo scores 2.5 out of 5 for privacy and GMX 2. Kualo gives you a provider with no advertising business behind it.
Which is cheaper, GMX or Kualo?
GMX costs nothing to start (Free (paid plans only for German and Austrian residents)). Kualo's cheapest plan, Zimbra Professional Email, is From £3.99 per user a month (10 GB Zimbra mailbox, longer terms).
Do GMX and Kualo work with my own domain?
Only Kualo does (Yes). With GMX your address stays on its own domain.
Where do GMX and Kualo keep my email?
GMX keeps it in Germany (European data centres). Kualo keeps it in the United Kingdom.
Prices and the latest news
I haven't seen either change its price since I started checking on 25 October 2026.
The latest headlines: GMX news · Kualo news.
Alternatives to GMX and Kualo
GMX vs mailbox.org · Kualo vs mailbox.org · GMX vs Posteo · Kualo vs Posteo · GMX vs Proton Mail · Kualo vs Proton Mail
Switching between them
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.