If you are designing an envelope or postcard to be mailed, check out these envelope templates and postcard templates which will show you proper set up for USPS compliance.

Mail Piece Sizes

Mailing Template for 6" x 9" Postcards

Mailing Template for 6" x 11" Postcards

Mailing Template for 8.5" x 11" Flats

Mailing Template for #10 Envelopes

Postal Layout For Back of Letter Size or Postcard Mail Piece