To improve processing and handling of automation compatible letter-size booklets and self-mailers, the USPS requires them to be sealed with tabs.
There are some basic general guidelines for example, folded self-mailers need two tabs and letter-size booklets three. Size, weight, thickness and orientation of the mail piece can override these general rules and make your mail piece non-compliant, which can raise postage costs and delay delivery or even leave your mail piece unable to be mailed.
R.C. Brayshaw is in constant contact with the USPS to make sure mail pieces comply to standards and sorted to take advantage of the maximum postage savings.
Learn more about USPS Tabbing requirements!
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