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Comparison · Secure email providers

Posteo vs Tuta: which is better in 2026?

Posteo84.5#4 in best secure email providersTuta90.0#2 in best secure email providers

Tuta ranks higher in our list of secure email providers (#2 against #4, score 90.0 against 84.5).

  • 84.5
    Editorial score
    90.0
  • 1
    Platforms
    6
  • No
    Free to use
    Yes
  • No
    Open source
    Yes

Which should you choose?

Choose Posteo if you want

Ad-free, low-cost email with anonymous sign-up.

An ad-free account from 1 euro a month, with anonymous registration and optional encryption of stored data. The site lists no free plan, and only the web platform is listed.

Choose Tuta if you want

Encrypted email and calendar on a free plan.

End-to-end encrypted mail and calendar on a free plan with post-quantum encryption, open-source clients under GPLv3 and servers in Germany. The free plan has only 1 GB of storage.

The main differences

  • Only Tuta runs on Linux.
  • Only Tuta runs on Windows.
  • Only Tuta runs on macOS.
  • Only Tuta runs on iOS.
  • Only Tuta runs on Android.
  • Tuta is open source; Posteo is not.
  • Tuta can be used for free; Posteo requires payment.

Side by side

PosteoTuta
Score84.590.0
Rank in list#4 of 6#2 of 6
PriceSubscriptionAccounts from 1 euro per month, with 4 GB of storageFree plan, paid upgradesFree plan with 1 GB; paid plans for more storage and domains
Free to useNoYes
Open sourceNoYes
PlatformsWebWebWebiOSAndroidWindowsmacOSLinuxWeb, iOS, Android, Windows, macOS, Linux
Made byNot statedNot stated
EncryptionOptional encryption of stored dataEnd-to-end, post-quantum
Hosting baseBerlin labGermany (servers)
Free planNoYes
Best forAd-free, low-cost email with anonymous sign-upEncrypted email and calendar on a free plan
Strengths
  • Registration needs no personal details
  • Ad-free with no tracking or profiling
  • Email, calendar, address book and notes in one account
  • Free plan with end-to-end encrypted mail and calendar
  • Clients published under GPLv3
  • Servers based in Germany
Limits
  • The site lists no free plan
  • Only the web platform is listed
  • Free plan includes only 1 GB of storage
  • Custom domains need a paid plan
LinksVisit site Visit site

Questions about Posteo vs Tuta

Is Tuta better than Posteo?
Tuta ranks higher in our list of secure email providers (#2 against #4, score 90.0 against 84.5). Posteo is best for: ad-free, low-cost email with anonymous sign-up. Tuta is best for: encrypted email and calendar on a free plan.
Which is cheaper, Posteo or Tuta?
Posteo: Accounts from 1 euro per month, with 4 GB of storage. Tuta: Free plan with 1 GB; paid plans for more storage and domains.
Do Posteo and Tuta run on the same platforms?
Posteo supports Web. Tuta supports Web, iOS, Android, Windows, macOS, Linux.