Mailing Options For Letters. Web mail, like postcards, letters in small envelopes (up to 3.5 oz), and large envelopes (up to 13 oz). Web a customer's guide to mailing.
Mailing Address MyUsaService
Letters, large or thick envelopes, tubes, and packages containing mailable items can be sent using priority. This guide will explain your options for mailing and help you choose. Web mail, like postcards, letters in small envelopes (up to 3.5 oz), and large envelopes (up to 13 oz). Web a customer's guide to mailing. Web 7 rows priority mail®.
Letters, large or thick envelopes, tubes, and packages containing mailable items can be sent using priority. Web a customer's guide to mailing. This guide will explain your options for mailing and help you choose. Web mail, like postcards, letters in small envelopes (up to 3.5 oz), and large envelopes (up to 13 oz). Letters, large or thick envelopes, tubes, and packages containing mailable items can be sent using priority. Web 7 rows priority mail®.
