Sometimes you need to notify all users on your server about an event, for example, a scheduled outage.
This can be done simply using a mailing list Accounts.
Create a new mailing list account in your domain either via the Icewarp Console or through the WebAdmin interface.
Fill in the Alias (this is the email address for the list)
Optionally enter a Description and Owner for the list
choose All system users in the Source pull-down menu.
Click the Save button and your mailing list is created.
Now when you need a send a message to all users on your server you simply send to this Mailing List Account (all@Icewarpdemo.com in this example) and the message is delivered to all the Users on your server.
NOTE - the Source: drop-down has other useful pre-defined categories of user