We currently use Advanced UM to sync voicemail to email. I've found that I really like the ability to delete a message from my email and have the phone system also delete the message.
We are in the process of moving to an Exchange Hybrid environment. For the foreseeable future we will have some mailboxes in the cloud and others on premise. Is there any way to make Advanced UM work in this scenario? For "Mail Server Type" I only seem to have the option of either Microsoft Exchange (for on premise) or Office 365.