Send and receive e-mail using secure SSL encrypted server connections. Popcorn works as a client-server application, reading mail directly from POP servers.

Popcorn supports multiple account profiles. It requires no installation; no data is saved locally besides a portable INI file containing account information. It is immune to all forms of e-mail attachment and HTML viruses, scripts, and trojans, because it does not directly support receiving attachments or viewing HTML and optionally supports viewing/saving attachments and HTML through external applications. The built-in mail editor and address book enable you to compose and send new mail with or without file attachments, reply to, forward, and re-direct received mail using SMTP or ESMTP with authentication. It fits on a floppy or other portable media. You can import mail items composed, saved, or sent from Popcorn into other popular e-mail clients using the Mail Message format.