How can I send message to all my friends who are in my roster or broadcast a message to everyone in my roster in one go, using ejabberd?

Question

I want to send message to all contacts in my roster in one go. The contacts could be both online and / or offline.

Can I do this? Which modules should I enable in ejabberd to be able to do this? Are there any special configurations needed to be done to my server?

And if I want to do so using a php script, can I do this?

Answer 1

If it's an announce at server level, see mod_announce.

If it's only for contacts in your roster, only for those, and they may be in several servers, then you have to rely in your client for doing that task. For example, in Tkabber's roster, when I click in a group, it shows "Send message to all the contacts in this group".