Scene: You are going to mail hundreds or thousands of people an invitation (some may be e-mail invitations, some by USPS) to an event, say a donor recognition event, or a speaker giving a talk. The event is NOT a fundraising event. After the event, you know who DIDN'T come by the name tags you didn't...

Is this possible? I want to use RE to do a mailing of thank you letters, but I want it to automatically create a mailing action on that persons record.

If you mark the action category to "Mailing" you can then enter the name of the document that was mailed on the "Document" Line (i.e. "Optometry Newsletter- Fall 09" or "2009 President's Address to Alumni"). As long as the document naming conventions are consistent...