Software Alternatives & Reviews

📬 SMTP Server

Tools and servers for managing SMTP (email sending) services.

The best SMTP Server Products based on votes, our collection of reviews, verified products and a total of 280 factors

Top SMTP Server Products

  1. /kumomta-alternatives

    KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.

    Open Source free

  2. 19
    /citadel-alternatives

    Is a collaboration suite (messaging and groupware).

  3. 17
    /courier-mta-alternatives

    The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open...

    Open Source

  4. /bitdefender-box-alternatives

    Bitdefender BOX protects all devices connected to the Internet.

  5. /sendgrid-alternatives

    Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free

  6. /mailhog-alternatives

    MailHog is an email testing tool inspired by MailCatcher, but easier to install.

    Open Source

  7. /xandikos-alternatives

    Lightweight CalDAV/CardDAV server on top of Git.

    Open Source

  8. /blue-mind-alternatives

    Blue Mind is a complete solution of company messaging, calendars and collaborative work.

  9. /esmtp-alternatives

    esmtp is a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail compatible syntax.

  10. /courier-imap-alternatives

    The Courier IMAP server is a fast, scalable, enterprise IMAP server that uses Maildirs.

  11. /mailchimp-alternatives

    MailChimp is the best way to design, send, and share email newsletters.

  12. /mocana-atlas-platform-alternatives

    Mocana creates and develops mobile application protection (MAP) app-shielding solutions, enabling users to secure mobile apps

  13. /infcloud-alternatives

    InfCloud is an open source CalDAV/CardDAV web client implementation released under GNU AGPL (version 3.0).