Hey, Following answers applies now for on-premise installations. Currently there is no option to define system to delete voicemails automatically, but it's a topic we are aiming to improve in near future for cloud and will come eventually for on-premise. Also can confirm that there is no rest interface available for the function. With on-premise setup you could setup an solution that deletes voicemail when user replies with keyword "del" or "delete", but the solution is based on oldish virtual SMTP service and if you are already integrated to office 365 email service, then that is not an option. So, only way is via database and for guidance I ask you to create ticket as we don't want to reveal database structure publicly in community. BR, Jukka
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