According to one aspect of the invention, sending an electronic message
to two or more sets of recipients includes associating a first portion of an electronic
message with a first set of one or more recipients. A second portion of the electronic
message is associated with a second set of one or more recipients. The electronic
message is sent to the recipients such that the first set of recipients receives
the first portion of the electronic message and the second set of recipients receives
the second portion of the electronic message.
