danhakimi, 10 months ago It was both, but Facebook Messenger was less widely known and was kind of janky. here's a source that explains part of what was going on. https://webapps.stackexchange.com/questions/44482/can-you-send-messages-to-facebook-users-from-external-xmpp-servers
It was both, but Facebook Messenger was less widely known and was kind of janky. here's a source that explains part of what was going on.
https://webapps.stackexchange.com/questions/44482/can-you-send-messages-to-facebook-users-from-external-xmpp-servers