A company that assembles direct mail printing, labels, and inserts. The lettershop can tag, sort, transport the mailings to the post office for delivery, and provide a receipt of post office delivery to the mailer.
A company that will assemble and insert the various printed elements of a direct mail piece, label, sort, tag and deliver the mailings to the post office for mailing. The lettershop will provide the mailer with written proof of delivery to the U.S. Postal Service.