DELIVER

   DELIVER screens and automatically processes your incoming mail
   based on guidelines that you provide. Different actions can be
   taken based on a message's envelope or header addresses, subject,
   or content. These actions include delivering the message, filing
   the message away, forwarding the message, or even invoking a
   DCL command procedure to perform complex processing. Any actions
   taken occur immediately upon receipt of each message; you do not
   need to be logged in at the time a message is received in order
   for actions to be taken on your behalf.

   DELIVER is modelled after the MAILDELIVERY facility of the MMDF
   mail system. DELIVER is, however, completely distinct from MMDF
   and the formats of .MAILDELIVERY files for MMDF and MAIL.DELIVERY
   files for DELIVER are dissimilar.
 

Additional information available:

Setting_Up_DELIVER              MAIL.DELIVERY_File_format       Operation
Subaddresses    Limitations