Alternative apps to Postbox:
  • 67 votes
    Mailbird 3.0.39
    Mailbird is an email client for Windows, that provides all the right features and tools to help you reach inbox zero faster.
    • Freeware
    • Windows
  • 94 votes
    Mozilla Thunderbird 140.0
    Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features.
    • Freeware
    • Windows, macOS, Linux
  • 26 votes
    SeaMonkey 2.53.21
    Web-browser, advanced e-mail and newsgroup client, IRC chat client, and HTML editing made simple.
    • Freeware
    • Windows, macOS, Linux
  • 64 votes
    Opera Mail 1.0.1044
    Opera Mail is a lightweight, customizable mail client. Reading, labeling, and filtering messages has never been so easy.
    • Freeware
    • Windows, macOS
  • 8 votes
    Becky! Internet Mail 2.81.08
    Internet Mail is the software specifically designed for the Internet e-mail.
    • Free to Try
    • Windows
  • 7 votes
    Windows Live Mail 16.4.3522
    Manage multiple email accounts, calendars, and your contacts, even when you're offline.
    • Freeware
    • Windows
  • 10 votes
    Inky 4.1.0
    All your email in one place.
    • Demo
    • Windows, macOS