Proton Mail for Business vs Inbox.eu
On privacy it's Proton Mail for Business. On price it's Inbox.eu. On features it's Proton Mail for Business. Here's everything side by side, last checked 25 October 2026.
Which should you choose?
- Proton Mail for Business is the better pick if you want mail that's encrypted end to end without any setup; calendar and contacts in the same account; and apps whose code is public.
- Choose Inbox.eu if you want the lower price (€9.99 a user a year); more space for your mail: 100 GB; and the choice of any mail app over IMAP.
| Feature | Proton Mail for Business | Inbox.eu |
|---|---|---|
| Overall | 4.0 | 3.5 |
| Privacy | 4.5 | 2.5 |
| Price | 2.5 | 5.0 |
| Features | 4.5 | 4.0 |
| Cheapest plan | Mail Essentials $6.99 per user a month | Premium €9.99 a user a year |
| Free plan | No | Trial only (3 emails a day) |
| Storage | 15 GB | 100 GB |
| Your own domain | ✓ 3 | ✓ Yes |
| End-to-end encryption | ✓ Built in | No |
| Company based in | Switzerland | Latvia |
| Your data is kept in | Switzerland | Latvia |
| Founded | 2014 | 1998 |
| Free trial | 30-day refund | Free 30-day trial; 60-day money-back guarantee |
| Funded by advertising | No | No |
| Works in any mail app | With Proton Bridge on paid plans | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | No |
| Aliases | Yes | 5 aliases on Premium |
| Open-source apps | ✓ Yes | No |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
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The key differences
- Cheapest plans: Proton Mail for Business Mail Essentials, $6.99 per user a month. Inbox.eu Premium, €9.99 a user a year.
- Proton Mail for Business has no free plan; Inbox.eu has Trial only (3 emails a day).
- Space: Proton Mail for Business gives 15 GB of storage, Inbox.eu 100 GB of storage.
- Your mail is stored in Switzerland with Proton Mail for Business, and in Latvia with Inbox.eu.
- The companies sit under different laws: Proton Mail for Business in Switzerland, Inbox.eu in Latvia.
- On encryption, Proton Mail for Business encrypts mail end to end, whereas Inbox.eu doesn't encrypt mail end to end.
- Mail apps: Proton Mail for Business works in other mail apps through Proton Bridge on paid plans; Inbox.eu works in any mail app over IMAP.
- Aliases: Proton Mail for Business offers yes, Inbox.eu 5 aliases on premium.
Common questions
Is Proton Mail for Business more private than Inbox.eu?
Proton Mail for Business scores 4.5 out of 5 for privacy and Inbox.eu 2.5. Proton Mail for Business gives you mail that's encrypted end to end without any setup and apps whose code is public.
Is Proton Mail for Business cheaper than Inbox.eu?
Inbox.eu is cheaper. Its Premium plan is €9.99 a user a year, against $6.99 per user a month for Proton Mail for Business's Mail Essentials. Check the renewal price before you pay, as some first-year prices go up.
Can I use my own domain with Proton Mail for Business or Inbox.eu?
Yes, both do. Proton Mail for Business: 3 domains on its cheapest plan that allows one. Inbox.eu: Yes.
Where is my email stored with Proton Mail for Business and Inbox.eu?
Proton Mail for Business keeps it in Switzerland. Inbox.eu keeps it in Latvia.
Can I use Proton Mail for Business and Inbox.eu in Apple Mail or Outlook?
Proton Mail for Business works in other mail apps through Proton Bridge on paid plans. Inbox.eu works in any mail app over IMAP.
Recent price changes
Neither price has changed since my first check on 22 October 2026.
The latest headlines: Proton Mail for Business news · Inbox.eu news.
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Switching between them
Moving between any two providers works the same way. Pick your two providers for the steps.