Software that can be used as an alternative to Mozilla Thunderbird:
  • 4.5/5
    2 votes

    Take control of your day with Postbox’s clean and super-customizable interface. Make your email work for you, just the way you need it to.

    • Trial
    • Windows/macOS
  • 5/5
    4 votes

    Internet Mail is the software specifically designed for the Internet e-mail.

    • Shareware
    • Windows
  • 55
    9 votes

    Free, standards-based electronic mail client suitable for use by single or multiple users on single computers or network.

    • Freeware
    • Windows
  • 4.64.6
    32 votes

    Make your email incredible.

    • Freeware
    • Windows
  • 4.4/5
    5 votes

    Manage multiple email accounts, calendars, and your contacts, even when you're offline.

    • Freeware
    • Windows
  • 44
    17 votes

    Web-browser, advanced e-mail and newsgroup client, IRC chat client, and HTML editing made simple.

    • Freeware
    • Windows/macOS/Linux
  • 3.83.8
    68 votes

    Stay connected to your world with our most up-to-date e-mail and calendar tools.

    • Trial
    • Windows
  • 3.6/5
    5 votes

    Popular email client that allows to work with unlimited number of the mailboxes, and many more other features.

    • Shareware
    • Windows