After setting udde to prune on every admin inbox login i still get processes of 110 megs. Even if i have just pruned.
I've exported my uddeim table and it was 16.1 megs.
In an effort to minimize the load I have set read deletions after 2 days, unread after 50 days, and every 14 days a forgetmenot.
I used to save messages for a century, after i pruned it with these settings i was still left with an (optimized) uddeim table export of 15 megs. so that wasn't really helpfull i think.