How to send USPS 1st Class Mail

In 1983, the United Postal Service (USPS) implemented a program that offered postage discounts to mailers that shared the work in preparing the mail for processing, including providing the USPS with quality addresses. This process helped the USPS manage their mailing system more cost-efficiently. Over time, the work-sharing discount program yielded inaccurate mailing addresses from address-matching software used by mailers. This issue involving invalid addresses, which resulted in the mounting number of undeliverable mail, gave birth to the CASS system.

What Is CASS?

The United States Postal Service (USPS) designed the Coding Accuracy Support System (CASS) to help business mailers improve the accuracy of mailings. It does this by verifying each address in your list against their own database of deliverable addresses in the United States. This official post office database is updated quarterly to account for changes. These can be as simple as a ZIP+4 change, replacing Drive with DR, or replacing ST with LN, for instance. Addresses that are not on the CASS list will not be used for mailings, and the certification software will reject it, saving both you and the post office money. What's more, the cost of postage for CASS-certified mailings is lower.

The CASS software will then offer up a list of “undeliverable” mail, which you can use to update your list by tracking down the correct address or removing it from your system. CASS won’t remove any information that doesn’t match. Instead, it will actually correct misspellings and zip codes to give you a cleaner mailing list.

How CASS Certified Mailing Helps You

If part of your job is sending out mailings via first class, priority or certified mail, CASS, when combined with myMailHouse , makes the process easier for you. No printing, no folding and no stuffing. Really! By using myMailHouse , you can input your mailing list and the documents you need to send. The work is then done off-site efficiently and accurately. Even better, you can send a single letter or thousands of documents online and on-demand with just a few clicks. In this way, you are turning your PC into a complete mail house that will save you at least 25 percent on each mailing. What could be more of a no-brainer? This means less work and a lower cost for you.

Forming a mailing partnership with myMailHouse is easy; there are no contracts or membership fees, and no minimums at all. This cutting-edge company offers a secure and reliable service for businesses. When you need to access professional mailing services, think my MailHouse and then your job is as good as done. Sign up on to get started processing your business mailings the 21st-century way!

Choose the MMH printer or use the browse button in the tool to open your document.

Choose the MMH printer or use the browse button in the tool to open your document.

Select the First-Class Mail® options.

Select the First-Class Mail® options. Follow the easy steps to check out.

Confirm your order and hit send.

Confirm your order and hit send. You’re all finished!

Customers love Using mymailhouse

' myMailHouse is so easy to use and it literally takes 2 minutes to send out a first class and certified letter at the same time! My staff is spending a fraction of the time they were on mailings and our firm is spending a fraction of the cost. '

Celeste S.
Robertson Anschutz Vetters, LLC
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