Krystal vs Stalwart
Krystal wins on privacy, they tie on price and Krystal wins on features. Every fact below was checked on or before 25 October 2026.
Should you pick Krystal or Stalwart?
- Krystal suits you best if you want your mail kept in the United Kingdom and a company with a longer track record (since 2002).
- Stalwart suits you best if you want to try it free first and apps whose code is public.
| Feature | Krystal | Stalwart |
|---|---|---|
| Overall | Not rated | Not rated |
| Privacy | 2.5 | Not rated |
| Price | Not rated | Not rated |
| Features | 4.5 | Not rated |
| Cheapest plan | Email hosting Not confirmed | Community Free (Enterprise from €2 per mailbox a year) |
| Free plan | No | Yes, open source |
| Storage | Not confirmed | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United Kingdom | United Kingdom |
| Your data is kept in | United Kingdom | Your own server |
| Founded | 2002 | 2019 |
| Free trial | 60-day money-back guarantee | Free to download |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | Unknown | Unknown |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
The key differences
- Krystal's cheapest plan is Email hosting (Not confirmed); Stalwart's is Community (Free (Enterprise from €2 per mailbox a year)).
- For free, Krystal gives you no free plan, and Stalwart a free plan (open source).
- Krystal keeps your mail in the United Kingdom, while Stalwart keeps it in Your own server.
Krystal and Stalwart: your questions
Do Krystal and Stalwart work with my own domain?
Yes, both do. Krystal: Yes. Stalwart: Yes.
Where do Krystal and Stalwart keep my email?
Krystal keeps it in the United Kingdom. Stalwart keeps it in Your own server.
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: Krystal news · Stalwart news.
Not sold on either? Try these
- mailbox.org4.5 out of 5 overall
- Proton Mail for Business4.0 out of 5 overall
- Tuta Business4.0 out of 5 overall
Krystal vs mailbox.org · Stalwart vs mailbox.org · Krystal vs Proton Mail for Business · Stalwart vs Proton Mail for Business · Krystal vs Tuta Business · Stalwart vs Tuta Business
How to switch
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.