Is it legal to mail utility bills on just the postcard?

by Raki Wright | Last Updated December 30, 2015

Q: Is it legal to mail utility bills on just the postcard? Or will it need to be put into an envelope?

A: We have many municipality and utility customers all over the country who use our utility postcards for their billing without enclosing them in an envelope. They are able to mail the bills for the less than the cost of a first class stamp alone!