Software Alternatives, Accelerators & Startups

Top 12 Open-Source Alternatives to Polymail

Polymail
Spark Mail Mailspring Roundcube iRedMail Mail-in-a-box Mailpile Emailgurus.xyz Rainloop Squirrelmail Cypht

Summary

The top open-source alternatives to Polymail are Spark Mail, Mailspring, and Roundcube. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
    Pricing:
    • Open Source

    #Email #Email Clients #Calendar 30 social mentions

  2. Mailspring is a mail client for Mac, Windows and Linux.
    Pricing:
    • Open Source

    #Email #Email Clients #Calendar 25 social mentions

  3. Web-based IMAP email client
    Pricing:
    • Open Source

    #Email #Email Clients #SMTP Server 16 social mentions

  4. A fully fledged, free email server solution, an open source project (GPL v2).
    Pricing:
    • Open Source

    #Email #SMTP Server #Self-hosted Email 3 social mentions

  5. Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.
    Pricing:
    • Open Source

    #Email #Self-hosted Email #Email Service Provider 116 social mentions

  6. Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.
    Pricing:
    • Open Source

    #Email #Email Clients #Email Management

  7. Emailgurus lower your Gmail inbox density by +60% by classifying emails from people you don't know
    Pricing:
    • Open Source
    • Freemium
    • Free Trial
    • $6.99 / Monthly

    #Productivity #Email #Open Source 4 social mentions

  8. RainLoop is a web based email client.
    Pricing:
    • Open Source

    #Email #Email Clients #Email Management

  9. SquirrelMail is a standards-based webmail package written in PHP.
    Pricing:
    • Open Source

    #Self-hosted Email #Enterprise Communication #Email 3 social mentions

  10. 10
    All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail.
    Pricing:
    • Open Source

    #Email #Email Clients #Email Management 4 social mentions

  11. 11
    The powerful productivity browser like no other, multi-account sign-in, tab sleeping, groups & pins
    Pricing:
    • Open Source
    • Freemium
    • Free Trial
    • $8.32 / Monthly

    #Messaging #Enterprise Communication #Productivity 16 social mentions

  12. Get your encrypted mailbox for free.
    Pricing:
    • Open Source

    #Email #Email Clients #Enterprise Communication 177 social mentions

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