recipient1
  sender1
  sender2
  sender3
  ...
  ...
recipient2
  sender1
  sender2
  sender3
  ...
  ...

##</code><code>##

recipient1
  sender1 -- reject reason
  sender2 -- reject reason
  sender3 -- reject reason
  ...
  ...
recipient2
  sender1 -- reject reason
  sender2 -- reject reason
  sender3 -- reject reason
  ...
  ...