Fastmail vs Stalwart
Fastmail wins on privacy, Fastmail wins on price and Fastmail wins on features. Every fact below was checked on or before 25 October 2026.
Should you pick Fastmail or Stalwart?
- Fastmail suits you best if you want your mail kept in the EU (Amsterdam) for UK customers, with a US replica and US backups and a company with a longer track record (since 1999).
- Choose Stalwart if you want a free plan to start on and open-source apps.
| Feature | Fastmail | Stalwart |
|---|---|---|
| Overall | 3.0 | Not rated |
| Privacy | 2.0 | Not rated |
| Price | 3.5 | Not rated |
| Features | 5.0 | Not rated |
| Cheapest plan | Individual $5 a month, yearly | Community Free (Enterprise from €2 per mailbox a year) |
| Free plan | No | Yes, open source |
| Storage | 50 GB | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Australia | United Kingdom |
| Your data is kept in | EU (Amsterdam) for UK customers, with a US replica and US backups | Your own server |
| Founded | 1999 | 2019 |
| Free trial | 30 days free | 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 | Masked email and aliases | Yes |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | Offer 10% off your first year, plus a free trial of up to 30 days | None |
| Last checked | 22 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
The key differences
- Fastmail's cheapest plan is Individual ($5 a month, yearly); Stalwart's is Community (Free (Enterprise from €2 per mailbox a year)).
- Fastmail has no free plan; Stalwart has a free plan (open source).
- Space: Fastmail gives 50 GB of storage, Stalwart storage not confirmed.
- Fastmail keeps your mail in the EU (Amsterdam) for UK customers, with a US replica and US backups, while Stalwart keeps it in Your own server.
- The companies sit under different laws: Fastmail in Australia, Stalwart in United Kingdom.
- Aliases: Fastmail offers masked email and aliases, Stalwart yes.
Fastmail and Stalwart: your questions
Can I use my own domain with Fastmail or Stalwart?
Yes, both do. Fastmail: Yes. Stalwart: Yes.
Where is my email stored with Fastmail and Stalwart?
Fastmail keeps it in the EU (Amsterdam) for UK customers, with a US replica and US backups. Stalwart keeps it in Your own server.
Prices and the latest news
Neither price has changed since my first check on 22 October 2026.
The latest headlines: Fastmail news · Stalwart news.
Not sold on either? Try these
Fastmail vs mailbox.org · Stalwart vs mailbox.org · Fastmail vs Posteo · Stalwart vs Posteo · Fastmail vs Proton Mail · Stalwart vs Proton Mail
Moving your email
Moving to Fastmail · Moving from Fastmail. Or see all my switching guides.