I like to keep the last 3 months worth of mail in a folder, which I use daily via evolution and dovecot. Then, rather than clicking delete again and again (I receive a very high volume of mail), I just let a cron job delete anything older than 3 months that hasn't been refiled out of that folder. I have a particular correspondent who has a habit of not bothering to return my e-mails, and I'm having to generate lists of things to follow up with him on, unfortunately. Is there some way I can, using evolution or other imap-based or maildir- based tool, generate a list of all messages I sent to said correspondent, and to which there was never a reply? Thanks!
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