I have a database where some names (records) have e-mail adressese and others
don't (they only have snail mail adresses). Using mail merge I would like to
make a procedure that sends the letter as an e-mail to those who have the
e-mail adress registered, while the rest are sent to the printer for posting.
The procedure should be as automatic as possible, preferrably only one click
to do both.

Any suggestions to how this could best be solved?