May 26, 2018

Utility to scan mailboxes for messages matching a regular expression

mboxgrep is a small utility that scans a mailbox for messages matching a regular expression. Found messages can be either displayed on standard output, counted, deleted, piped to a shell command or written to another mailbox.

Its features include

  • ability to limit the search to message body or headers although the whole message is scanned by default
  • message counting
  • ability to invert the sense of matching
  • ability to write found messages to another mailbox
  • support for mbox either plain or compressed, MH, nnmh, nnml and maildir folders
  • support for basic and extended POSIX regular expressions, and, optionally, Perl-complatible regular expressions if linked with the PCRE library

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