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First-Class Mail | USPS

First-Class Mail is your mail solution for envelopes and lightweight packages. Learn more about features, timing and the cost to mail a letter.

Flat Rate — Quick Reference | Postal Explorer

DMM 100; Introduction; What Are ... is sent in a USPS-produced Flat Rate Envelope or ... International Flat Rate Envelopes are 4 pounds. Weight restrictions for ...

Stamps.com - USPS First Class Mail, First Class Postage

USPS first class mail, Stamps.com allows you to print first class mail postage stamps online.

Priority Mail Flat Rate Envelope - USPS.com

Priority Mail Flat Rate Envelope The ... Create a USPS.com ... this paperboard envelope features a predetermined flat rate regardless of the weight or ...

Frequently Asked Questions - USPS

Below are frequently asked questions (FAQs) for Postal ... a 20-pound weight limit for allowable contents, and the flat-rate envelope has a 4-pound weight limit.

Priority Mail Padded Flat Rate Envelope - USPS.com

Order free Priority Mail Padded Flat Rate Envelopes - lined with bubble padding for extra protection, it is a great flat rate shipping.

A Customer’s Guide to Mailing - USPS

A Customer’s Guide to Mailing JANUARY 2017. Price List ... U.S. Postal Service ... based on weight and distance $$

Stamps.com - USPS Forever Stamps, First Class Stamp

Forever Stamps are USPS First Class postage stamps that can be used to mail letters weighing one ounce or less no matter what the postal rate,

Preparing Shipments | USPS

Preparing Shipments. ... not weigh more than 70 lbs. Lower weight limits may apply. ... and consumer products may not be mailed through the US Postal Service®.

UPS: Weight and Size - United Parcel Service

UPS has established specific weight and size limits for the packages that you send with all UPS services. The restrictions below only pertain to individual packages.