Soverin vs Mail-in-a-Box
In short: Soverin wins on privacy, Soverin wins on price, and Soverin wins on features. The full comparison is below, last checked 25 October 2026.
Should you pick Soverin or Mail-in-a-Box?
- Soverin suits you best if you want your mailbox stored in the Netherlands.
- Mail-in-a-Box is the better pick if you want to try it free first and open-source apps anyone can check.
| Feature | Soverin | Mail-in-a-Box |
|---|---|---|
| Overall | 3.5 | Not rated |
| Privacy | 2.5 | Not rated |
| Price | 4.0 | Not rated |
| Features | 5.0 | Not rated |
| Cheapest plan | Private Mailbox €3.25 a month, yearly | Open source Free |
| Free plan | No | Yes, open source |
| Storage | 25 GB | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Netherlands | United States |
| Your data is kept in | Netherlands | Your own server |
| Founded | Unknown | 2013 |
| Free trial | No free trial; 30-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 | Unlimited | Yes |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | Unknown | No |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
How Soverin and Mail-in-a-Box differ
- Soverin's cheapest plan is Private Mailbox (€3.25 a month, yearly); Mail-in-a-Box's is Open source (Free).
- For free, Soverin gives you no free plan, and Mail-in-a-Box a free plan (open source).
- Soverin comes with 25 GB of storage and Mail-in-a-Box with storage not confirmed.
- Your mail is stored in the Netherlands with Soverin, and in Your own server with Mail-in-a-Box.
- Soverin is based in the Netherlands and Mail-in-a-Box in the United States, so different privacy laws apply.
- For extra addresses, Soverin has unlimited and Mail-in-a-Box has yes.
Soverin and Mail-in-a-Box: your questions
Do Soverin and Mail-in-a-Box work with my own domain?
Yes, both do. Soverin: Yes. Mail-in-a-Box: Yes.
Where do Soverin and Mail-in-a-Box keep my email?
Soverin keeps it in the Netherlands. Mail-in-a-Box keeps it in Your own server.
Price changes and news
I haven't seen either change its price since I started checking on 25 October 2026.
The latest headlines: Soverin news · Mail-in-a-Box news.
Also worth a look
Soverin vs mailbox.org · Mail-in-a-Box vs mailbox.org · Soverin vs Posteo · Mail-in-a-Box vs Posteo · Soverin vs Proton Mail · Mail-in-a-Box vs Proton Mail
Switching between them
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.