Ninja You have option to set the limits and no of email per cron, if there is no email it would not send the emails to user, you will see the Pending list in Email Digest.
I'm sorry, but -again- I don't understand, what you want to say with that sentence. Can you pl. explain it in more simple words?
At the moment, my email digest settings are:
frequency=weekly
number of emails per cron=10
inactivity period days=30
I would have guessed, that:
Users, that haven't logged in for at least 30 days get a mail weekly, but max. 10 digest mails per cron job are sent. Correct?