HH offers a feature called Voicemail Blast.
You can request a voicemail blast number & PIN, which when dialed, will allow you to broadcast a voicemail message to all members of your VM Blast group.
Broadcast messages go directly to voicemail and will light VM indicators on phones as well as email a copy of the broadcast message to the receiver's email address on file with HH.
To request a VM Blast number, please open a ticket and select New VM Blast Group from the Help Topic drop down list and provide the following info:
HHOPS will then be able to create your VM Blast group.