I am about to embark on my first outlook 2007 plugin.

I would like to create a new tool bar that will have a button that will initially be disabled.

When the user selects a message the button should be enabled... but only if the email is of a certain type of email...

This is where I need your expert advice, is there a way to quickly flag an email in outlook, so that in the email select event you can look for a property of that email...

for example...

on_select if mail.type = "FromISP" then

I would prefer not to use the from field....

the other thing is during the send process I need to set the flag, I am doing this again using .net so I have full control over how the mail is created.

Any ideas would help...

Thanks