Proton Mail Alternatives Filtered by 'PGP Encryption'

The best alternative to Proton Mail is Tuta Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Proton Mail and 13 are so hopefully you can find a suitable replacement. Other interesting alternatives to Proton Mail are Posteo, mailbox, Mailfence and StartMail.

filter to find the best alternatives

Proton Mail alternatives are mainly WebMail Providers, but if you're looking for Email Clients or Calendar Apps you can filter on that. Other popular filters include Free, Open Source and Self-Hosted. These are just examples - use the filter bar below to find more specific alternatives to Proton Mail.
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Alternatives list

  1. Tuta Mail icon

    Tuta Mail

     528 likes

    Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.

    103 Tuta Mail alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Tuta Mail screenshot 1
     
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    10
    Comments about Tuta Mail as an Alternative to Proton Mail
    Top Positive Comment
    Advik
    3

    Tutanota is end-to-end encrypted, as well offers 1 GB mail storage on free plan. The pro plans are cheap compared to protonmail, so it's better for low budget users

    Conner Vieira
    Positive
    -2

    Tutanota has historically been a lot more transparent, and arguably has been more honest about issues and plans

    Ada Byron
    Positive
    1

    I use both, ProtonMail is more secure but also more expensive and not as user-friendly. You cannot beat the price of Tutanota for service they provide.

    3 of 10 comments
    Tuta Mail icon
    Tuta Mail icon
    • Tuta Mail is Freemium and Open SourceProton Mail is also Freemium and Open Source
    • Tuta Mail is LightweightProton Mail is not according to our users
  2. Posteo icon

    Posteo

     84 likes

    Web- and IMAP-based email service. 2GB cost 1€/month. Information is hosted on encrypted hard drives. Electricity from renewable resources is used.

    74 Posteo alternatives

    Cost / License

    • Paid
    • Open Source

    Application types

    Platforms

    • Online
    Drag and drop
     
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    1
    Comments about Posteo as an Alternative to Proton Mail
    John Fastman
    Positive
    2

    Posteo could be a good Protonmail alternative. It offers email encryption in a similar way: Posteo's people, government surveillance and successful hackers won't get into your email content. It also offers a calendar feature, which protonmail users have been crying out for for years.

    Posteo icon
    Posteo icon
    • Posteo is Paid and Open SourceProton Mail is Freemium and Open Source
    • Posteo is Security-focusedProton Mail is not according to our users
  4. mailbox icon

    mailbox

     74 likes

    E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).

    82 mailbox alternatives

    Cost / License

    Application types

    Platforms

    • Online
    mailbox screenshot 1
     
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    1
    Comments about mailbox as an Alternative to Proton Mail
    John Fastman
    Positive
    2

    Mailbox.org is a partial replacement for Protonmail. It offers a fully functional email solution (email, calendar, contacts), but with the added benefits of PGP encryption support (you can handle the keys or let them do it). It also allows you to send links to people who don't use PGP if you want to send private messages. For the encryption, it's a bit like Protonmail. For everything else, it's like a privacy-respecing Gmail alternative.

    mailbox icon
    mailbox icon
    • mailbox is Paid and ProprietaryProton Mail is Freemium and Open Source
    • mailbox is Security-focusedProton Mail is not according to our users
  5. Ad
  6. Mailfence icon

    Mailfence

     64 likes

    This secure email platform offers end-to-end encryption, a comprehensive suite with Calendar and Documents. Mailfence is inter-operable with OpenPGP services, features digital signatures, provides keystores, and available as a PWA for mobile independence while ensuring no ads, trackers, or surveillance.

    71 Mailfence alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Mailfence screenshot 1
     
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    7
    Comments about Mailfence as an Alternative to Proton Mail
    Top Positive Comment
    PhmNguynHngThnh
    5

    Mailfence offers more functionality than Proton mail with Calendar, Document, Chat, and Group functionality. Moreover, the price is much lower than other competitors.

    Top Negative Comment
    Guest
    2

    Costs money to use with 3rd party programs.

    Review by a new / low-activity user.
    Guest
    Positive
    1

    because its free and don't need any pay and don't want phone number to sign in

    Review by a new / low-activity user.
    3 of 7 comments
    Mailfence icon
    Mailfence icon
    • Mailfence is Freemium and ProprietaryProton Mail is Freemium and Open Source
  7. StartMail icon

    StartMail

     29 likes

    Privacy-focused email service offering easy one-click PGP encryption, 20 GB storage, disposable email addresses, and compatibility with IMAP/SMTP while adhering to Dutch privacy laws to secure data and communications effectively.

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Online
    StartMail screenshot 1
     
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    2
    Comments about StartMail as an Alternative to Proton Mail
    John Fastman
    Positive
    0

    StartMail is run by the privacy-oriented folks behind StartPage search engine. StartMail is an encrypted email service that is very similar in functionality to ProtonMail and tries to take the inconvenience out of using PGP for secure email communication. Worth considering, for sure.

    Guest
    Positive
    -1

    also privacy orientated, like protonmail.

    Review by a new / low-activity user.
    StartMail icon
    StartMail icon
    • StartMail is Paid and ProprietaryProton Mail is Freemium and Open Source
    • StartMail is Security-focusedProton Mail is not according to our users
  8. Vivaldi Mail icon

    Vivaldi Mail

     34 likes

    Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...

    101 Vivaldi Mail alternatives

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Online
    • Vivaldi
    Mail
     
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    1
    Comments about Vivaldi Mail as an Alternative to Proton Mail
    John Fastman
    Positive
    0

    Vivaldi mail offers PGP-based email encryption, similar to Protonmail. But the web client is much less well developed. However, unlike Protonmail (at the time of writing), they allow you to import your own PGP keys, which is nice (a feature Protonmail users have been demanding for years).

    Vivaldi Mail icon
    Vivaldi Mail icon
    • Vivaldi Mail is Free and ProprietaryProton Mail is Freemium and Open Source
  11. Onion Mail icon

    Onion Mail

     4 likes

    The power of simplicity. Onion Mail can manage emails in the normal network and in the Tor. Onion Mail protect your privacy and anonymity.

    31 Onion Mail alternatives

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Online
    • Android
     
  12. Runbox icon

    Runbox

     6 likes

    Runbox offers email hosting, domain hosting, and web hosting services, as well as custom-made email solutions

    57 Runbox alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • OpenPGP
    Webmail
     
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    1
    Comments about Runbox as an Alternative to Proton Mail
    bird
    Positive
    0

    I currently use Runbox. Very similar in concept to ProtonMail, albeit a paid service. Based in Norway.

    Runbox icon
    Runbox icon
    • Runbox is Paid and ProprietaryProton Mail is Freemium and Open Source
  13. Forward Email icon

    Forward Email

     6 likes

    Forward Email is the best email service, encrypted email service, and fastest email service. It supports unlimited domains and aliases for no extra cost. It uses quantum safe ChaCha20-Poly1305 encryption and offers SMTP, IMAP, POP3, email webhooks, email regular expressions...

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Online
    Forward Email screenshot 1
     
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    1
    Comments about Forward Email as an Alternative to Proton Mail
    linuxplayer
    Negative
    1

    Needs an existing email to be used for free. You have to pay to create an email.

    Forward Email icon
    Forward Email icon
    • Forward Email is Freemium and Open SourceProton Mail is also Freemium and Open Source
  14. CounterMail icon

    CounterMail

     6 likes

    Countermail is a web-based email service. It is hosted in Sweden. Its focus is on privacy. It provides several features, such as PGP support and diskless servers to protect users ability to communicate securely and anonymously.

    45 CounterMail alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    CounterMail screenshot 1
     
  15. VFEmail icon

    VFEmail

     6 likes

    Free email with privacy and security.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
     
12 of 13 Proton Mail alternatives