How do I send an email to a group of users, or all users?

You can use mailing lists combined with the User Directory.

To send an email to a mailing list

The mailing list must have been defined by the domain administrator, and you must have been authorized to send emails to the list. Simply send the email to the list's address, ex. list_1@domain.com

To send an email to a user community or user group

The administrator can setup a mailing list that includes all the users of a particular community or group. Ask your administrator for details.

To send an email to all the users of your domain

The administrator can setup a mailing list that includes all the users of a particular domain. Ask your administrator for details.