- USPS Home Page
- Mailers Technical Advisory Committee The Mailers Technical Advisory Committee is a committee of representatives from dozens of organizations representing all aspects of mail.
- Rapid Information Bulletin Board (RIBBS) The Rapid Information Bulletin Board System (RIBBS) publishes updates on mail delivery, weather and other information that impacts mail delivery.
- Centralized Account Processing System (CAPS) The Central Account Processing System (CAPS) allows mailers to centralize all their permit, business reply and other accounts into a convenient, single prepaid or debit account.
- MAIL Magazine MAIL Magazine is the Journal of Record for the Mail ommunications Industry.
- DM News
- MailPro MailPro is a free bimonthly publication for mailing professionals.
- Postal Bulletin The official source for updates to policies, procedures, forms and operational information about the Postal Service.
- Parcel Magazine Formerly Parcel Shipping & Distribution Magazine.
- Mailing Systems Technology Magazine Magazine for mailing systems technology news and reviews.
- Find a ZIP Code Enter known address information and receive the full ZIP code information.
- Calculate Postage Calculate postage for any package, domestic or international.
- Print a Postage Label Open an account and print postage from your computer.
- Locate a Post Office Find a Post Office station, Entry Unit, or other facility.
- Postal Explorer Search the Domestic Mail Manual and many other publications from one site.
- Track and Confirm Track and confirm packages.
- National PCC Web Site The national site for the PCC - find a PCC near you, learn about PCC operations, download the PCC Policy Manual - Publication 286.
Groups and Associations
- The Direct Marketing Association The Direct Marketing Association is the leading global trade association of business and nonprofit organizations using and supporting multichannel direct marketing tools and techniques.
- Mail Systems Management Association Dedicated to the professional advancement of the mail distribution industry.
- National Postal Forum The National Postal Forum is the premier annual event for businesses who mail and ship.