The program in addition to the usual functions offers the possibility to create libraries containing email attachments. The user can search for files attached to electronic mail, send them to friends, or segregate. Postbox can import settings from the Mozilla Thunderbird mailbox, supports Gmail, POP, IMAP, RSS, mailing lists, as well as social networking sites such as Facebook or Twitter.
In addition to sending e-mails, the user can save notes as well as to-do lists. In addition, the program has anti-phishing protection.
The trial version allows you to use the program for 30 days.