(Internet, transitive) To reply to or speak to someone, either online or face to face. (from the practice of targeting a message or reply to someone online by writing @name)
She regularly tweets career updates and quirky jokes to her seventy thousand followers, but she rarely @s other people. 2023, R. F. Kuang, Yellowface, The Borough Press, page 2:
He angrily @ed me after I made an innocent comment.
Honestly, don't @ me if you don't have anything nice to say.