Would be easier to apply retention policies to mailbox databases rather than individual user mailboxes. Easier to organize this way rather than having a bunch of nightly PowerShell scripts.
At the moment Retention Policies are only triggered on their retention age. Enhancing it with additional regular expressions (like transport/mail rules) will help manage the mailbox. For instance: Mail to archive when retention age is 90 days, unless object has attachment the mail is moved to archive when retention age is 45 days. (In my own mailbox, I move certain mails via a rule to a folder which has a specific retention... more »
Using the support provided for DLP rules in 2013 we would like to use these same matching rules to applying a Retention and\or Archiving tag to messages based on their content.