how many stamps minimum for label 400? just 1 forever stamp and a label 400 for tracking?
If the item is under the max allowed for the stamp, can i attach a label 400? or do i have to have some minimum amount of stamps before a label 400 tracker will work?
I am hoping I can just use 1 forever stamp + USPS Label 400, for tracking to work at the lowest cost?
[deleted]