Alternatives to Tuta Desktop

The desktop client for Tuta's encrypted mail service, with end-to-end encrypted mail, calendar and contacts. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Tuta Desktop.

  • Proton Mail

    Official Proton Mail apps for reading and sending end-to-end encrypted email on phones, desktops and the web.

    FreemiumProprietaryWindowsmacOSLinuxAndroidiOSWeb

    Proton Mail offers end-to-end encrypted email with apps for desktop, mobile and web, and Proton Mail Bridge allows standard clients, though its apps are not open source.

  • Mailfence

    Encrypted email service from Belgium with OpenPGP support, calendars, contacts and document storage.

    FreemiumProprietaryAndroidiOSWeb

    Mailfence uses OpenPGP encryption in the browser and supports IMAP, POP and SMTP, but it is hosted only with no desktop client and is not open source.

  • StartMail

    Paid private email service from the Netherlands with unlimited aliases and one-click encryption.

    PaidProprietaryWeb

    StartMail is a paid Dutch service with unlimited aliases and password-encrypted mail to outside recipients, but it is web only with no free tier beyond the trial.

  • Posteo

    German ad-free email provider with calendar, address book and notes, run on green energy.

    PaidProprietaryWeb

    Posteo is a paid German provider with standard IMAP and POP3 access and optional encryption of stored data, rather than end-to-end encryption of subject lines.

  • ElectronMail

    Use Proton Mail through an unofficial desktop client.

    FreeOpen sourceWindowsmacOSLinux

    ElectronMail is an unofficial open-source desktop client for Proton Mail on Windows, macOS and Linux, so switching also means moving to a Proton account.

  • mailbox.org

    A German email and workspace service with mail, cloud storage, video meetings and office tools.

    PaidProprietaryWeb

    mailbox.org is a paid German provider hosted under GDPR that adds cloud storage, meetings and office tools, used through its web service.

  • Fastmail

    A paid, privacy-focused email, calendar and contacts service with web and mobile apps.

    PaidProprietaryAndroidiOSWeb

    Fastmail is a paid private host with email, calendar and contacts and EU or USA data residency, but does not advertise end-to-end encryption.

Also worth comparing

These listings name Tuta Desktop as their own alternative, so the relationship runs both ways.

  • Hushmail

    An encrypted email service with secure forms and e-signatures, aimed at healthcare and small practices.

    PaidProprietaryiOSWeb

    Tuta encrypts bodies, subject lines, calendar and contacts, and sends password-protected mail to outsiders, with desktop clients and an open source GPL client.

  • Runbox

    A paid, ad-free email service hosted in Norway and powered by renewable energy.

    PaidProprietaryWeb

    Tuta end-to-end encrypts mail, subject lines, calendar and contacts, has a free tier, but offers no IMAP or SMTP for other clients.

Similar software

Related functionality, not a direct replacement.