options for mailing and help you choose the services that are best for you. For complete information, please see the Domestic Mail Manual (DMM®) on Postal Explorer® at pe.usps.com.

It is recommended that when mailing questionable items to U. S. or foreign destinations, the mailer should contact the Mail Center for assistance. All foreign countries also impose various …

Use the coded envelope included with your tax package to mail your return. If you did not receive an envelope, check the section called "Where Do You File?" inside the back cover of the your …

Several mailing services are available to fit your needs. Letters, large or thick envelopes, tubes, and packages containing mailable items can be sent using Express Mail. This guaranteed …

If you have questions about commercial mailing and shipping, or to speak to a Mailpiece Design Analyst, contact the Mailing and Shipping Solution Center (MSSC) at 1-877-672-0007 or …

Mailing and shipping is an integral part of doing business. Although sending a few items may seem simple, as volumes increase controlling spend and properly accounting for it becomes …

For three or more pieces with extra services presented for mailing at one time, the mailer may use PS Form 3877 (firm sheet) or privately printed firm sheets in lieu of the receipt portion of the …