The postage is paid by the company to which the envelope is addressed. Another kind of reply mail that is often confused with Business Reply is known as Courtesy Reply or just plain reply mail. These envelopes do not have the horizontal bars or special endorsements and the sender pays the postage. See our Big Envelope pages for our full line of these mailers. See our Business Envelopes pages for a complete selection of commercial envelopes in all sizes.
Most commercial envelopes have a diagonal seam.
The seams run at an angle from the bottom to the throat of the envelope. See our Envelope Anatomy page for more details. A postal permit printed in the upper right corner of the envelope, usually used for bulk mail. A special permit is required from the Postal Service. Envelopes with a latex seal do not require moisture.