Open Source Gmail Alternatives for Android

There are many alternatives to Gmail for Android if you are looking for a replacement. The best open source Android alternative is Proton Mail. If that doesn't suit you, our users have ranked more than 50 alternatives to Gmail and five of them are open source and available for Android so hopefully you can find a suitable replacement. Other interesting open source Android alternatives to Gmail are Tuta Mail, Infomaniak kMail, Keychat and Criptext.

filter to find the best alternatives

Gmail alternatives are mainly Email Clients, but if you're looking for Calendar Apps or WebMail Providers you can filter on that. Other popular filters include Open Source, Free, Android + Free, Android, Android + Open Source, EU and Self-Hosted. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Gmail.
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Alternatives list

  1. Proton Mail icon

    Proton Mail

     1015 likes
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    Proton Mail provides secure email services with end-to-end encryption, ensuring data protection. Swiss-based and outside US jurisdiction, it offers a free version to champion privacy as a human right. Fully accessible on any device.

    98 Proton Mail alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Tor
    • Flathub
    • Snapcraft
    Proton Mail screenshot 1
     
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    34
    428
    Comments about Proton Mail as an Alternative to Gmail
    Comment summary: ProtonMail is praised for its open-source nature, strong privacy features, and encryption, setting it apart from Gmail. Users appreciate its ad-free experience and security focus, with many endorsing it as a free and reliable alternative. Although some note its slower feature development and limited free storage, many consider the Swiss-based service to provide substantial user data protection, leading to strong recommendations for those concerned about privacy.
    Top Positive Comment
    John Fastman
    19

    Protonmail is free, open-source, encrypted (more private). Lacks: calendar & good contacts feature, but these are in the pipeline. Protonmail cannot by design data-mine your software for it's own profit; Gmail makes it's money by violating your privacy that way.

    Shaz Shah
    Positive
    1

    Proton Mail is my primary email and I have been moving away from GMail. In fact I do pay for it.

    Proton Mail has been reliable and their support has been great. The UI is different and pleasant, and they have apps that cater for different platforms (Windows, macOS, Android, etc).

    Charlignon
    1

    Protonmail is pretty great for all reasons listed. BUT it has two major drawbacks that you need to be aware of :

    • Account may be deleted due to inactivity (1 year - free plan) -SMTP (for apps like K9 mails or Thunderbird) requires additional setup, and is not available on mobile devices These were deal breakers for my use cases
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    3 of 34 comments
    Gmail Icon
    Proton Mail icon

    • Almost everyone thinks Proton Mail is a great Gmail alternative.

    • Proton Mail is the most popular Web-based, Windows, Android & Mac alternative to Gmail.

    • Proton Mail is the most popular Open Source & free alternative to Gmail.

    • Proton Mail is Freemium and Open SourceGmail is Free and Proprietary
    • Proton Mail is Privacy focusedGmail is not according to our users
  2. Tuta Mail icon

    Tuta Mail

     516 likes
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    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.

    100 Tuta Mail alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Tuta Mail screenshot 1
     
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    13
    157
    Comments about Tuta Mail as an Alternative to Gmail
    Comment summary: Tutanota is generally praised for its privacy-focused approach, offering end-to-end encryption and not selling user data, which contrasts with Gmail's monetization model. Users appreciate the easy-to-use interface, minimal design, and affordable premium plans. However, there are some concerns about occasional account deletion and the lack of POP/IMAP support, which limits compatibility with some email clients like Thunderbird.
    Top Positive Comment
    justinterested
    8

    Tutanota is a great email provider with very good encryption (it uses end-to-end encryption like Signal – i.e. they cannot read your emails/gife them to the government, Gmail can!) and they don't sell any data. It is also very easy to use, it has a very nice app, a desktop client and a web client. There is really no reason why you wouldn't want to use it :)

    Top Negative Comment
    kendo friendo
    1

    AVOID. Deleted my account for not using it, but I had it tied to important accounts. The only way to get the email address back is to buy a paid account.

    alttosgt
    Positive
    0

    Tuta Mail is NOT self hosted despite claim on AlternativeTo

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    3 of 13 comments
    Gmail Icon
    Tuta Mail icon

    • Almost everyone thinks Tuta Mail is a great Gmail alternative.

    • Tuta Mail is Freemium and Open SourceGmail is Free and Proprietary
    • Tuta Mail is Privacy focused and LightweightGmail is not according to our users
  4. Infomaniak kMail icon

    Infomaniak kMail

     38 likes
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    Privacy-focused Swiss email system provides 20 GB free storage, supports custom domains and unlimited storage, syncs contacts and calendars, is ad-free, and is part of a secure productivity suite used by over a million users across Europe on all devices.

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Infomaniak kMail screenshot 1
     
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    3
    Comments about Infomaniak kMail as an Alternative to Gmail
    ImSebi
    Positive
    0

    Much better than Gmail. And now you don't need a domain anymore, it's free for everyone.

    hb9vaf
    Positive
    0

    I very good alternative for mail, contact & agenda

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

    You have all the functions you need in workspace, like Gmail. Fully customizable, high security. This product is professional. I use it since 2 year, and I don't want to return to Gmail. Only one point : you need a domain name. But it's more original like a Gmail.com address...

    Review by a new / low-activity user.
    Gmail Icon
    Infomaniak kMail icon
    • Infomaniak kMail is Freemium and Open SourceGmail is Free and Proprietary
    • Infomaniak kMail is Privacy focusedGmail is not according to our users
  5. Ad
    Screenshot
    Infomaniak kMail icon
    Infomaniak kMail

    Privacy-focused Swiss email system provides 20 GB free storage, supports custom domains and unlimited storage, syncs contacts and calendars, is ad-free, and is part of a secure productivity suite used by over a million users acro...

    https://www.infomaniak.com
    Learn More
  6. Keychat icon

    Keychat

     2 likes
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    • Senders send messages stamped with Bitcoin ecash to Nostr relays. The Nostr relays collect the Bitcoin ecash, then deliver messages to receivers.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Android
    Keychat screenshot 1
    Keychat screenshot 2
    Keychat screenshot 3
     
  7. Criptext icon

    Criptext

     11 likes
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    Finally, an email service that's built around your privacy. Get your @criptext.com email address and see what it's like to have peace of mind and privacy in every email you send.

    Cost / License

    • Free Personal
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    Criptext screenshot 1
    Criptext screenshot 2
    Criptext screenshot 3
     
5 of 5 Gmail alternatives