USPS is increasing rates in ... will jump from $10.45 to $10.78 while the Priority Mail Express flat rate envelope (size 12-1 ...

USPS is increasing rates in ... will jump from $10.45 to $10.78 while the Priority Mail Express flat rate envelope (size 12-1/2″ x ... To see a full-chart of USPS Ground Advantage and ...

Please note: Letter rates are only for normal business envelopes (sizes #6 or #10), which are no larger than 6-1/8" in height and 11.5" in length. Standard manila envelopes are considered large ...