Good news...went to the post office and had her weigh one envelope and put it thru the squissy slot and it fit so all them went for 45 cents except Canada. Let me know if you get a postage due on any of them and Ill complain to the post office! She said if they are sealed good there should be NO problem going thru the machine...we shall see...All 38 are in the mail! Have FUN.