Advanced addressing features

We have added two new features for virtual domain and alias users:

1. Own-domain users can put a ‘*’ in the alias target; this is
   replaced with the username the message was originally sent to
2. You can set an alias target to ‘user+something@domain’. Then if you
   get sent an email to ‘alias+foo@domain’, the final recipient will be
   ‘user+something.foo@domain’. That is, the two ‘plus parts’ are
   combined to allowing delivery to a subfolder

These advanced features are documented in the FAQ, and discussed on the forum.