Mailbox last access - most reliable source

Joseph Brennan brennan at
Mon Jul 7 16:12:36 EDT 2014

"Fabio S. Schmidt" <fabio at> wrote:

>  I actually need to consider only the last access via IMAP or POP 

That can be very misleading, because a device may keep checking for new 
mail for a very long time after the user abandons the account.

A recent timestamp on the user.seen file should be good, but that seems to 
update mysteriously sometimes.

Joseph Brennan
Columbia University Information Technology

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