Rules for Direct Mail Sizes

Whether you are launching a direct mail campaign, fulfilling customer orders or printing a post card, insert or catalogue, you are always better having the right information at your fingertips and avoid errors. Mistakes are costly!

Our direct mail  resource section can provide you with both technical information for the rules of Direct Mail Sizes as set forth by the USPS. With over 25 years of knowledge and experience we can help you succeed in the areas of services that Chicago Fulfillment Services provides to our customers. Please feel free to contact us should you have questions or simply want help.


First Class Postcard Mailing a first class……

Letter MailingMailing a letter…..

Flats (large size mail) Mailing a flat…….

Not For Profit Mail Not for profit organizations…

Direct Mail FAQ Frequently asked questions…




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