March 2015 As of October 2019, the most used messaging apps worldwide are with 1.
Separately, on October 13, 2005, Microsoft and Yahoo! However, while discussions at IETF were stalled, signed the first inter-service provider connectivity agreement in September 2003.
As an example, it is considered rude to write only in upper case, because it appears as if the user is shouting.
Talkomatic was very popular among PLATO users into the mid-1980s.
TikTok trails in third with 53.
Lush in with roommate home! There is the class of instant messengers that uses the model, which doesn't require servers, and the IM network consists only of clients.