My company has produced WAPEX321 which WAP enables Exchange Server, and we are working on the next one: SMS-X-321. This will send SMS (short messages to your mobile phone) from Exchange Server to you whenever, for example, new mail arrives for you, a reminder or calendar event is due, or a task has been assigned...
There is a detailed rules engine to allow each Exchange user to set up his own rules as to what event should cause an SMS to be sent to him, e.g. new mail from a customer should generate an SMS when he is out of the office.

The product is in final stages of development, but there is always time to incorporate extra features, so I'd really appreciate your comments and suggestions.

Thanks
Yitzi www.321.co.za