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Alternatives · Email

Posteo alternatives

Posteo compared with 5 alternatives: mailbox, Tuta Mail, Proton Mail, StartMail and Mailfence.

Posteo is a paid product, starting at €1 per month, prepaid (minimum top-up €12). 3 of the 5 alternatives are free or have a free plan. 2 more offer a free trial.

5 tools · Listings checked up to Oct 6, 2026 · Where the facts come from

At a glance

ToolPriceFree planRuns on
PosteoThis toolFrom €1/moNoWeb
mailboxFree trial · from €1/moTrial onlyWeb
Tuta MailFree plan · from €3/moYesWeb, macOS, Windows, Linux, iOS, Android
Proton MailFree plan · from $3.99/moYesWeb, macOS, Windows, Linux, iOS, Android
StartMailFree trial · from $4.99/moTrial onlyWeb, Android
MailfenceFree plan · from €2.50/moYesWeb, iOS, Android

How each one differs from Posteo

  1. mailbox

    Paid, ad-free email with cloud storage and office tools from Germany

    • mailbox starts at €1 per month, annual payment only (€12 a year, Light). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Posteo is open source, according to its own site.
    • mailbox also covers tasks, documents, video calls and file sync.
    • Posteo also covers notes.

    Suits: People who want paid, ad-free email hosted in Germany

    mailbox vs Posteomailbox pricing and details

  2. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Tuta Mail has a free plan. Posteo does not.
    • Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
    • Posteo also covers notes.

    Suits: People who want mail, calendar and contacts encrypted by default

    Tuta Mail vs PosteoTuta Mail pricing and details

  3. Proton Mail

    End-to-end encrypted email service based in Switzerland

    • Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Proton Mail has a free plan. Posteo does not.
    • Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
    • Posteo also covers notes.

    Suits: People who want an email provider that cannot read their messages

    Proton Mail vs PosteoProton Mail pricing and details

  4. StartMail

    Paid private email from the Netherlands with unlimited aliases

    • StartMail starts at $4.99 per month, billed annually ($59.88). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Only StartMail lists an Android app.
    • Posteo is open source and end-to-end encrypted, according to its own site.
    • StartMail also covers inbox filtering.
    • Posteo also covers notes and calendar.

    Suits: People who want a paid, ad-free mailbox hosted in the Netherlands

    StartMail vs PosteoStartMail pricing and details

  5. Mailfence

    Private email from Belgium with built-in OpenPGP encryption

    • Mailfence starts at €2.50 per month, billed yearly (Base). Posteo starts at €1 per month, prepaid (minimum top-up €12).
    • Mailfence has a free plan. Posteo does not.
    • Only Mailfence lists iOS and Android apps.
    • Posteo is open source, according to its own site.
    • Mailfence also covers documents.

    Suits: People who want OpenPGP encryption without installing a plug-in

    Mailfence vs PosteoMailfence pricing and details

Limits worth knowing in Posteo

  • Custom domains are not supported; addresses use Posteo's own domains such as posteo.de, posteo.net or posteo.com.
  • There is no free plan and no trial account, though credit is refunded in full if you cancel within the first month.
  • Payment is prepaid in euros, with a minimum top-up of €12, which is about one year's fees.
  • It is used through webmail and a web app or through other mail apps over IMAP or POP3, and it offers no cloud storage.
Posteo pricing and details

Common questions

What are the alternatives to Posteo?

The alternatives to Posteo in this directory are mailbox, Tuta Mail, Proton Mail, StartMail and Mailfence. Each one has a side-by-side comparison with Posteo.

Is there a free alternative to Posteo?

Yes. Tuta Mail, Proton Mail and Mailfence have a free plan alongside paid ones.

Which Posteo alternatives work on Windows?

The Posteo listing does not include a Windows app. Tuta Mail and Proton Mail list one.

Which Posteo alternatives work on macOS?

The Posteo listing does not include a macOS app. Tuta Mail and Proton Mail list one.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Oct 6, 2026. Vendors change prices without notice, so confirm on their site before you buy.

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