A mass mailing is any job which involves sending copies of the same materials (e.g. magazines, brochures, form letters, post cards, catalogs, etc.) to different addresses. Whether you need to send 30 letters or 30,000 letters, Print and Mail Production Center has the resources to make your life easy. If you have over 200 mail pieces or over 50 pounds of mail, you qualify for USPS bulk mail rates. Let us know what you need; we're here to serve you.