Parse if there have been new mails synched to the local dir.

[Profpatsch]

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Hi offlineimap team,

I’m setting up offlineimap with mutt atm and want to write a small
script that pipes a “New Mail” to my i3status when there is any.

I studied oi’s output but I haven’t found any indication that I could
parse to see if there are new mails.

The script I’ve come up with so far is doing a
`find $MAIL -printf %t | md5sum`
which creates a hash over the last modified times of the whole maildir.
Then it checks with the hash from the last run and if they differ, the
statusbar shows “Mail changed” until the next run (which is a cron job
done every ~5 minutes).

But it can only see when there are changes to the maildir (and it
somehow deleted my whole maildir once—lucky me has backups).

Any ideas?

~Profpatsch
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