I've been using mutt for some days now, and I think I have the basics by now.I'm able to search messages by date (l, ~d date ...) but what I need is to also search by time.Is it even possible? 
Search in mutt by date and time
mutt
It is not possible without patching mutt, however you could limit to:~d <1d ~h '^Date:.*(1[3-9]|2.):..:'To list the emails that have been sent today after 13:00 (in their own timezone).To check the date in your timezone, you may be able to rely on the fact that there should be a Received header added by a MTA in your timezone (especially if it goes through a MTA on your machine). Then you could do:~r <1d ~h '^Received:.*(1[3-9]|2.):..:.. \+0100'(+0100 is the time zone offset where I live (+0000 in winter), it may be different for you).You can also do the selection manually:sort by sent or received datenote the first (x) and last (y) message you wish to see.limit using ~m x-y