> If I recall correctly, you can be @pinged for a week since your last visit to the room (even if you're not currently present among the room visitors), supposing that you ever posted in that room. Note that replying to your message (with the special reply button) would ping you anyway, even you haven't visited for a year.

@NikeDattani At the moment, Catija is here. (Looking at the time in here timezone, she stayed up late today.)

But even if she leaves, she should still be pingable, since she posted here before. (See the post above.)

@MartinSleziak Yea I know they are pingable using the reply button, but in this case you pinged her using the @ button. Let's see if she replies!

Well, since he wan't pinged now, I am not sure she will notice.

The quote I posted about was supposed to be about @username. It is true that you can ping users using reply to any of their messages, regardless of whether the user was or wasn't in the room: Does a direct reply to a message in chat create a notification, no matter what age the message is?

This is also somewhat related: Does ping work in chat with no autocompletion?