Say i have rosters, is it possible to query at least the timestamp of the last sent message of that roster?
Hw can i know at least when there's a new message per JID?
using mod_offline is not ideal since messages only get retrieve once and im using mobile.
and we cant rely on notifications, since there are failure scenarios.
mod_mam, I have to query everytime, every user/roster (imagine if you have 100 contacts)? that's expensive. I don't know whats the best approach for having a chat list
