Recipients
The Recipients property declares who will receive this email. It is a QL expression, and
you should only modify it if you know what you are doing. By default, it simply defers to
the contents of the Email To property -- for ordinary email, you should just list the people
who are to receive this in Email To. But you can edit Recipients to be any other QL expression,
which can make some problems much easier. For example, if you want to send the email to
every Person listed in this Space, set Recipients to "Person._instances".
The QL expression given in here must produce a List of Links to Persons.
