Navigate to MBRCRM> Broadcasts > Schedule Email Broadcast.
NOTE: Emails in DRAFT mode cannot be sent in a broadcast.
You can then select the time you want the broadcast to go out. You can choose to schedule the broadcast in the future or to send it right away by selecting Send Now.
If you enable send in contact’s local time, the email will be sent at the given hour in their local time zone (if a time zone is recorded for that contact). This option has no effect if Send Now is selected.