Posteo vs Blacknight
On privacy it's Posteo. On price it's Posteo. On features it's Blacknight. Here's everything side by side, last checked 22 October 2026.
Should you pick Posteo or Blacknight?
- Choose Posteo if you want your mailbox stored in Germany; the lower price (€1 a month); and open-source apps anyone can check.
- Blacknight suits you best if you want to use your own domain, like you@yourname.co.uk and more space for your mail: 10 GB.
| Feature | Posteo | Blacknight |
|---|---|---|
| Overall | 4.5 | 3.0 |
| Privacy | 4.5 | 1.5 |
| Price | 5.0 | 4.0 |
| Features | 3.0 | 4.5 |
| Cheapest plan | Posteo €1 a month | Titan Pro €2.50 a mailbox a month |
| Free plan | No | No |
| Storage | 4 GB | 10 GB |
| Your own domain | No | ✓ Yes |
| End-to-end encryption | Optional (PGP or encrypted storage) | No |
| Company based in | Germany | Ireland |
| Your data is kept in | Germany | Not confirmed |
| Founded | 2009 | Unknown |
| Free trial | No, €1 a month from the start | Unknown |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes (posteo.de only) | Yes |
| Open-source apps | ✓ Yes | No |
| Sign up without ID | ✓ Yes | No |
| White label | No | Unknown |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 22 October 2026 |
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How Posteo and Blacknight differ
- Cheapest plans: Posteo Posteo, €1 a month. Blacknight Titan Pro, €2.50 a mailbox a month.
- Space: Posteo gives 4 GB of storage, Blacknight 10 GB of storage.
- Your mail is stored in Germany with Posteo, and in Not confirmed with Blacknight.
- The companies sit under different laws: Posteo in Germany, Blacknight in Ireland.
- On encryption, Posteo offers optional encryption (PGP or encrypted storage), whereas Blacknight doesn't encrypt mail end to end.
- You can use your own domain with Blacknight, but not with Posteo.
- Aliases: Posteo offers yes (posteo.de only), Blacknight yes.
Questions people ask
Is Posteo more private than Blacknight?
Posteo scores 4.5 out of 5 for privacy and Blacknight 1.5. Posteo gives you your mailbox stored in Germany, open-source apps anyone can check and to sign up without proving who you are.
Is Posteo cheaper than Blacknight?
Posteo is cheaper. Its Posteo plan is €1 a month, against €2.50 a mailbox a month for Blacknight's Titan Pro. Check the renewal price before you pay, as some first-year prices go up.
Can I use my own domain with Posteo or Blacknight?
Only Blacknight does (Yes). With Posteo your address stays on its own domain.
Where is my email stored with Posteo and Blacknight?
Posteo keeps it in Germany. Blacknight keeps it in Not confirmed.
Price changes and news
Neither price has changed since my first check on 22 October 2026.
The latest headlines: Posteo news · Blacknight news.
Alternatives to Posteo and Blacknight
Posteo vs mailbox.org · Blacknight vs mailbox.org · Posteo vs Proton Mail · Blacknight vs Proton Mail · Posteo vs Tuta · Blacknight vs Tuta
Switching between them
Moving to Posteo · Moving from Posteo. Or see all my switching guides.