Feed result set into a command

Greetings fellow Saturday-hackin' crazies.
 
I need to do an exception join and process each record of the result set with a 
command.
 
To be a bit more detailed, I have a table of e-mail items and another of 
statuses. I need to select the e-mail items that don't have a completion status 
and feed them into Mr. Stone's MAILTOOL.
 
I'd like to do this as "directly" as possible, so I was thinking RUNSQLSTM, but 
is there a simple way to process the result set? Is this where one would use a 
UDF? I'll need to do a bit more than just call the command, such as logging my 
results.
 
Regards,
Zak Metz
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