Is it possible to send an alert to an external email address when an email arrives in a mailbox set up in Exchange? We already have external contacts set up for some users. What I would like is rather than forward an email received in an exchange mailboxes to an external contact, just to send an alert to the external email address to tell the user that they have an email in their exchange mailbox. So that they can then to use OWA to reply to the email.

Would they be able to simply leave OWA 2007 open and get the built-in new mail notifcation alerts or use a mobile device with activesync?

Not for the users I'm thinking about. Although I set up exchange mailboxes for everyone two years ago, the uptake has been slow, as most have gmail accounts and the like that they use regularly. It's a voluntary organisation. What I want to do now is push people into only using their exchange mailbox for anything to do with the organisations business (internal and public-facing). Rather than just force everyone to do this, I was wondering if there was a way to get them to change their habits.

No nothing out the box like that if you're looking for some notification that you have email like how typically facebook\linkedin will send. The only option in the past that has been floated is to use an eventvwr trigger in conjuction with transport rules. http://demazter.wordpress.com/2010/03/02/notify-external-recipient-of-internal-e-mail/James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Tried this technique with the event viewer. Worked like a dream. A bit of work for 20-30 mailboxes, but this is perfect. Thanks very much.