Message forwarding and retrieval with a single messaging service

Embodiments described herein generally relate to a method and system of integrating a user's voice mail onto a single voice messaging service, e.g., a Unified Messaging (UM) service, such that a client may access this single source for voice mail retrieval, even where such voice mails are from a variety of sources, e.g., work, mobile phone, etc. A user, or the user's mobile operator, need only agree to accept the service, and the registration and configuration requirements for providing the service and forwarding calls to the service are automatically configured. The user's existing "speed dial" key or other setting for retrieving voice mail may also be automatically configured to the access number(s) for the service. Configurations may monitor the status of the service and update access and/or forwarding numbers. Voice mail forwarding and settings may also be automatically reverted back to the user's original service.