Create and save test segments
A user should be able to create and save test segments under the Manage tab. This would let the user test how many subscribers are in a segment before creating a campaign. If they find out that that segment is too small or too large for their needs, then they could abandon it before creating a campaign, saving time. Also, if the user decides to save a test segment, the segment should be available for use when creating a campaign email.
Rob Cohen commented
This is similar to something we put up a while back. Please look up our posting:
"Create and save test segments" (it's currently on page 2 of the forum)