How can i edit the subject of a recived mail in web or desk-app?
it doesnt seem that this option is available in webapp/deskapp.
and btw its not recommended if you have z-push clients, since one of my employees did this via outlook 2010 and MAPI connection, some mails vanished on his laptop (connected via outlook 2016, z-push) and i had to resync the whole store every once in a while… (still dont know why, the mailID did/should not change and thats everything z-push should care about)
if you do this in order to get an overview on ie. “open” and “done” mails, i would recommend to use categories or subfolders