If you have a Windows Mobile phone or a mobile phone that supports Exchange ActiveSync, you can use your mobile phone to access your mailbox. You can access your e-mail messages, appointments and meetings, contacts, tasks, and voice mail messages on your mobile phone.
You can set up a Windows Mobile phone to access your mailbox. You can synchronize your mobile phone with only one mailbox. You can also set up your mailbox to receive voice mail messages from your mobile phone.
For the latest information about connecting to your email on your mobile phone, see Mobile Phone Setup Reference