Silly question probably, but:
There is quite a gap between numbers in the "recipients"-field, and the "Subscribed recipients"-field, in sent newsletters in the Newsletter V3 "Sent items" folder.
A recent example can be seen here:
http://screencast.com/t/j1OqeuTBXw1U
Recipients: 83012
Subscribed recipients: 56880
Does anybody know what the difference between being a "recipient" and a "subscribed recipient" is?