why why why the does Thunderbird let you sort by email subject, I have never wanted to do this and I always do it if I "miss" trying to open the newest email, and when you have a 100k+ inbox this little maneuver's is gonna cost you 51 years of CPU time
@benjojo
I used sorting by subject a few times when trying to clean up my mailbox - makes it easier to bulk-delete spam, automated alerts, etc
@benjojo
but yeah it only works up to a certain mailbox size