Sending a private message to all users on my forum

[SatTrkr]

How can I send a single private message to all users on my Forum? I have used the News feature but not all users come to the Forum. I need to send a PM to all users.

[Illori]

https://wiki.simplemachines.org/smf/SMF2.0:News_and_newsletters

you can send a newsletter to their email address or via PM.