I have a fairly old Outlook add-in written in VB6. This adds a toolbar on the Outlook ribbon with buttons for various bits of functionality which interact with emails in the inbox, the contact list and calendar.

I have been asked if it would be possible to trigger some of the functions of this add-in when a user hits "Send" on an email.

Does anyone know if it is possible to hook a VB6 program into the send event, or if it would be possible to write a new plugin, using .Net as an example, which could hook into the send event and trigger the functionality on the old plug in??

Sorry if this is a bit vague, it is a little hard to explain. If you need to know anything further, just ask, otherwise any advice is greatly appreciated!