how much does it cost to mail a manila envelope
Answered by The Community. Making the world better, one answer at a time. The cost to mail a manila envelope will depend on the size of the envelope and the weight of the envelope. The average cost to mail a manila envelope that is 8X11 is about $2 if the contents weigh less than one pound.ow much does it cost to mail a 3.5 oz envelope in the us? $0.95 if it's a regular envelope; $1.50 if it bends easily and in a larger envelope; $2.12 if it's rigid or more than 1/4 in. thick and in a larger envelope.