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ipurge − delete mail from IMAP mailbox or partition based on age or size
ipurge [
−f ] [ −C config-file ] [
−x ] [ −X ] [ −i ] [
−s ] [ −o ] 
[ −d days | −b bytes
| −k Kbytes | −m
Mbytes ] 
[ mailbox-pattern... ]
Ipurge deletes messages from the mailbox(es) specified by mailbox-pattern that are older or larger than specified by the -d, -b, -k or -m options. If no mailbox-pattern is given, ipurge works on all mailboxes. If the -x option is given, the message age and size MUST match exactly those specified by -d, -b, -k or -m. The are no default values, and at least one of -d, -b, -k or -m MUST be specified.
Ipurge by default only deletes mail below shared folders, which means that mails in mailbox(es) below INBOX.* and user.* stay untouched. Use the option -f to also delete mail in mailbox(es) below these folders.
Ipurge reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.
| −f | Force deletion of mail in all mailboxes. | 
−C config-file
Read configuration options from config-file.
−d days
Age of message in days.
−b bytes
Size of message in bytes.
−k Kbytes
Size of message in Kbytes (2^10 bytes).
−m Mbytes
Size of message in Mbytes (2^20 bytes).
| −x | Perform an exact match on age or size (instead of older or larger). | ||
| −X | Use delivery time instead of Date: header for date matches | ||
| −i | Invert match logic: -x means not equal, date is for newer, size is for smaller | ||
| −s | Skip over messages that have the \Flagged flag set. | ||
| −o | Only purge messages that have the \Deleted flag set. | 
/etc/imapd.conf