to DM /ˌdiː ˈem/ informal to send somebody a direct mes | English with the Premier League

to DM /ˌdiː ˈem/
informal
to send somebody a direct message (a private message that you send on Twitter that will only be seen by the person you send it to)

DM somebody (something) I DM'd him my email address.
DM (something) (to somebody) I'll DM the link to you.