The Applications window will open. Click Messaging Assistant.
The Personal Options window will open. Click Notification Devices tabon the top menu and select View Notification Devices.
The Notification Devices window will open. Under Enabled column, select check box next to HTML to enable HTML notification (if not already enabled). Then click HTML.
The HTML Notification Device window will open. Under HTML Template Mail Format header, select the checkbox next to Allow voicemail as attachments and click Save at the bottom of the window.