mpop is a POP3 client: it retrieves mail from POP3 mailboxes.

Features include:

  * Support for multiple accounts
  * Header based mail filtering: filter junk mail before downloading it
  * Delivery to mbox files, maildir folders, or a mail delivery agent (MDA)
  * TLS/SSL support including client certificates
  * Many authentication methods
  * Support for Internationalized Domain Names (IDN)
  * Fast POP3 implementation using command pipelining
  * SOCKS proxy support

WWW: https://marlam.de/mpop/