Stalwart vs IceWarp
On privacy it's IceWarp. On price it's IceWarp. On features it's IceWarp. Here's everything side by side, last checked 25 October 2026.
Stalwart or IceWarp: which should you choose?
- Go for Stalwart if you'd like to try it free first and apps whose code is public.
| Feature | Stalwart | IceWarp |
|---|---|---|
| Overall | Not rated | 3.0 |
| Privacy | Not rated | 1.5 |
| Price | Not rated | 4.5 |
| Features | Not rated | 4.0 |
| Cheapest plan | Community Free (Enterprise from €2 per mailbox a year) | Cloud, entry plan $1.35 a user a month, yearly ($1.50 monthly) |
| Free plan | Yes, open source | No |
| Storage | Not confirmed | 2 GB |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United Kingdom | Czechia |
| Your data is kept in | Your own server | The data centre you choose |
| Founded | 2019 | Unknown |
| Free trial | Free to download | First month free |
| 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 | ✓ Yes | No |
| 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
- Stalwart's cheapest plan is Community (Free (Enterprise from €2 per mailbox a year)); IceWarp's is Cloud, entry plan ($1.35 a user a month, yearly ($1.50 monthly)).
- Stalwart has a free plan (open source); IceWarp has no free plan.
- Space: Stalwart gives storage not confirmed, IceWarp 2 GB of storage.
- Your mail is stored in Your own server with Stalwart, and in The data centre you choose with IceWarp.
- The companies sit under different laws: Stalwart in United Kingdom, IceWarp in Czechia.
Common questions
Can I use my own domain with Stalwart or IceWarp?
Yes, both do. Stalwart: Yes. IceWarp: Yes.
Where is my email stored with Stalwart and IceWarp?
Stalwart keeps it in Your own server. IceWarp keeps it in The data centre you choose.
Prices and the latest news
- 22 October 2026 IceWarp: $3.50 a user a month, when I checked
The latest headlines: Stalwart news · IceWarp news.
Also worth a look
- mailbox.org4.5 out of 5 overall
- Proton Mail for Business4.0 out of 5 overall
- Tuta Business4.0 out of 5 overall
Stalwart vs mailbox.org · IceWarp vs mailbox.org · Stalwart vs Proton Mail for Business · IceWarp vs Proton Mail for Business · Stalwart vs Tuta Business · IceWarp vs Tuta Business
Moving your email
Moving between any two providers works the same way. Pick your two providers for the steps.