addy.io vs Mail-in-a-Box
Addy.io wins on privacy, addy.io wins on price and they tie on features. Every fact below was checked on or before 25 October 2026.
Which should you choose?
- addy.io suits you best if you want your email to stay in the EU and to sign up without proving who you are.
- Mail-in-a-Box is the better pick if you want the choice of any mail app over IMAP; a calendar and contacts alongside your mail; and a company with a longer track record (since 2013).
| Feature | addy.io | Mail-in-a-Box |
|---|---|---|
| Overall | 4.0 | Not rated |
| Privacy | 3.5 | Not rated |
| Price | 5.0 | Not rated |
| Features | Not rated | Not rated |
| Cheapest plan | Lite About $1 a month, yearly | Open source Free |
| Free plan | Yes | Yes, open source |
| Storage | Forwards only | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United Kingdom | United States |
| Your data is kept in | EU | Your own server |
| Founded | 2018 | 2013 |
| Free trial | Free plan | Free to download |
| Funded by advertising | No | No |
| Works in any mail app | No, its own apps only | ✓ IMAP and SMTP |
| Calendar and contacts | No | ✓ Yes |
| Aliases | Unlimited aliases | Yes |
| Open-source apps | ✓ Yes | ✓ Yes |
| Sign up without ID | ✓ Yes | No |
| White label | No | No |
| 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
- addy.io's cheapest plan is Lite (About $1 a month, yearly); Mail-in-a-Box's is Open source (Free).
- For free, addy.io gives you a free plan (), and Mail-in-a-Box a free plan (open source).
- addy.io comes with no storage, as it forwards mail on and Mail-in-a-Box with storage not confirmed.
- Data location: EU for addy.io, Your own server for Mail-in-a-Box.
- addy.io is based in the United Kingdom and Mail-in-a-Box in the United States, so different privacy laws apply.
- addy.io only works in its own apps, and Mail-in-a-Box works in any mail app over IMAP.
- For extra addresses, addy.io has unlimited aliases and Mail-in-a-Box has yes.
addy.io and Mail-in-a-Box: your questions
Do addy.io and Mail-in-a-Box work with my own domain?
Yes, both do. addy.io: Yes. Mail-in-a-Box: Yes.
Where do addy.io and Mail-in-a-Box keep my email?
addy.io keeps it in the EU. Mail-in-a-Box keeps it in Your own server.
Do addy.io and Mail-in-a-Box work in other mail apps?
addy.io only works in its own apps. Mail-in-a-Box works in any mail app over IMAP.
Prices and the latest news
I haven't seen either change its price since I started checking on 25 October 2026.
The latest headlines: addy.io news · Mail-in-a-Box news.
Alternatives to addy.io and Mail-in-a-Box
addy.io vs mailbox.org · Mail-in-a-Box vs mailbox.org · addy.io vs Posteo · Mail-in-a-Box vs Posteo · addy.io vs Proton Mail · Mail-in-a-Box vs Proton Mail
Moving your email
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.