rt-email-digest - dispatches all deferred RT notifications as a
-m, --mode Specify whether this is a daily or weekly run.
-p, --print Print the resulting digest messages to STDOUT; don't mail them.
Do not mark them as sent
-h, --help Print this message
mark_transactions_sent( $frequency, $user, @txn_list );
Takes a frequency string (either 'daily' or 'weekly'), a user and one
or more transaction objects as its arguments. Marks the given deferred
notifications as sent.