A Us postage calculator which calculates USPS First class, Priority Mail, and Express Mail postage, as well as international letter postage including Canada and Mexico.

Update Description:

Update v1.2 1/13/01:

- Updated with new postal rates.

Update v1.3 3/6/01:

- Correct surcharge for nonstandard forms.

Update v1.4 4/6/01:

- Fixed file format.