New comment by Anachron on mblaze repository

https://github.com/leahneukirchen/mblaze/issues/236#issuecomment-1782438887

Comment:
To give you another idea on how to do it, I wrote a script to automatically move old mails to an "ARCHIVE" mailbox which isn't synced back to the server.

This way I don't clutter my inbox while still being able to read them later if needed to.

```sh
#!/bin/sh

MAILACC="${1}"
MAILINBOX="${HOME}/usr/mls/${MAILACC}/INBOX"
MAILARCHIVE="${HOME}/usr/mls/${MAILACC}/ARCHIVE"
MAILYEAR=$(echo "$(date +%Y) -2" | bc -s)

test -d "${MAILINBOX}" || exit 1

! test -d "${MAILARCHIVE}" && mmkdir "${MAILARCHIVE}"
printf 'Searching for messages older than %s-01-01\n' "${MAILYEAR}"
ml=$(mlist "${MAILINBOX}" | mpick -t 'date <= "'"${MAILYEAR}"'-01-01"' | msort -d)
test -n "${ml}" || { printf 'Nothing found!\n'; exit; }
printf 'Archiving %s messages\n' $(printf '%s\n' "${ml}" | wc -l)
printf '%s\n' "${ml}" | mrefile "${MAILARCHIVE}"
printf 'Creating inbox sequence\n'
mlist "${MAILINBOX}" | msort -r -d > "${HOME}/usr/mls/${MAILACC}/inbox.seq"
printf 'Creating archive sequence\n'
mlist "${MAILARCHIVE}" | msort -r -d > "${HOME}/usr/mls/${MAILACC}/archive.seq"
```