I'm not sure if this question has been asked, but I was wondering is there a way to send an email alert to a user when an email is sent from a certain user in SharePoint 2010. I know you can send various alerts when documents are accessed, files are opened, etc. I was wondering about this feature in particular though.
I.E. If User A wants to know when User B sends email to the site collections SharePoint email address (email@example.com)