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Squirrelmail Alternatives

Squirrelmail is described as 'SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers' and is a webmail provider in the office & productivity category. There are more than 10 alternatives to Squirrelmail for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Linux, Cloudron and PHP. The best alternative is Roundcube, which is both free and Open Source. Other great apps like Squirrelmail are Rainloop, Mailpile, SOGo and Horde.

Squirrelmail alternatives are mainly WebMail Providers but may also be Email Clients or Mail Servers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Squirrelmail.
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  • Self-Hosted
  • PHP

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and...

Learn more about Squirrelmail

  1. Roundcube icon

    Roundcube

    • Self-Hosted
    • PHP
    • Cloudron
    29 alternatives to Roundcube 

    Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.

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    Features
    1.  PGP EncryptionRoundcube supports PGP, an encryption system used for sending encrypted emails and files.
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    Mailbox
    Roundcube vs Squirrelmail opinions
    Most users think Roundcube is a great alternative to Squirrelmail.
  2. Rainloop icon

    Rainloop

    • Online
    • Self-Hosted
    • Nextcloud
    • JavaScript
    • PHP
    • Cloudron
    12 alternatives to Rainloop 

    Simple, modern & fast web-based email client. Modest system requirements, decent performance, simple installation and upgrade, no database required. All these make RainLoop Webmail a perfect choice for your email solution.

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    Features
    Login


  3. Mailpile icon

    Mailpile

    • Linux
    • Online
    • Self-Hosted
    • OpenPGP
    59 alternatives to Mailpile 

    Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.

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    Features
    1.  OpenPGPMailpile supports OpenPGP, a standard of PGP encryption that is open-source for public use.
    Discontinued

    1.0.0 Release Candidate 6 from 2019 is the last version on GitHub (https://github.com/mailpile/Mailpile/releases). Possibly the development has been stopped.

    Screenshot
    Screenshot
  4. SOGo icon

    SOGo

    • Linux
    • Online
    • Thunderbird
    • Cloudron
    63 alternatives to SOGo 

    SOGo is groupware server with a focus on scalability and open standards.

    SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

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  5. Horde icon

    Horde

    • Online
    • Self-Hosted
    40 alternatives to Horde 

    Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.

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    Features
    Discontinued

    The last release (5.2.22) was in September 2017.

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  6. Webmail Lite icon

    Webmail Lite

    • Online
    • Self-Hosted
    30 alternatives to Webmail Lite 

    Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail application, which is fast and easy to use. Whether you need a free web browser based email client software for Windows ASP.

     Suggest and vote on features
    This app doesn't have any features at the moment.
    Afterlogic Webmail Lite
  7. Cypht icon

    Cypht

    10 alternatives to Cypht 

    All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader :).

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    Features
    1.  End-to-End EncryptionCypht has E2E Encryption, for entire or parts of the app.
    Screenshot
  8. Isotope Mail Client icon

    Isotope Mail Client

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    • Kubernetes
    • Docker
    • OpenShift
    11 alternatives to Isotope Mail Client 

    Microservice based webmail client built with ReactJS and Spring.

    Minimalistic webmail client which currently has the main features of any other mail client (read mail, compose mail, organize mail folders...).

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    Features
    1.  AutocompletionIsotope Mail Client can predict and complete the rest of a word or phrase you're typing.
    Screenshot
    Screenshot
  9. NeutronMail

    • Online
    • Self-Hosted
    21 alternatives to NeutronMail 

    Self-hosted server for the Proton Mail client.

     Suggest and vote on features
    Features
    1.  End-to-End EncryptionNeutronMail has E2E Encryption, for entire or parts of the app.
    2.  PGP EncryptionNeutronMail supports PGP, an encryption system used for sending encrypted emails and files.
    Discontinued

    No longer supported

  10. Turing Email icon

    Turing Email

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    62 alternatives to Turing Email 

    Turing Email is an email client that you can use with your existing email accounts that is packed with innovative features packaged into a beautiful design.

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    Features
    1.  Email SchedulingYou can schedule a marketing, sales, or personal email for a time in the future with Turing Email.
    Screenshot
    Screenshot
Showing 10 of 17 alternatives
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