Mailutils

• decodemail(1) decode messages.
• dotlock.mailutils(1) lock mail spool files.
• frm.mailutils(1) display From: lines.
• from.mailutils(1) display from and subject.
• mail.mailutils(1) process mail messages
• messages.mailutils(1) count the number of messages in a mailbox
• mimeview(1) display files, using mailcap mechanism.
• movemail.mailutils(1) move messages across mailboxes.
• readmsg.mailutils(1) print messages.
• sieve(1) a mail filtering tool.