MWP v6.x sends one spam report per e-mail, this isn't very efficient and sending a large number of messages at one time may invoke either local or ISP based spam blocking causing your messages to be lost or have to be individually approved.
What I'd like to see is something similar to the Knujon or Spamcopper Thunderbird extensions that group multiple spam reports into a single message.
The spam messages should be inserted into the report as attachments and the total message should be less than about 50KB.
Aside from the more efficient sending of messages it reduces the number of incoming report confirmation messages from Spamcop. If you could fit 20 spam reports into a single message that would be a 20 to 1 improvement on your incoming mail too.
