Safety matches are considered hazardous materials but can be mailed via land transport domestically without any problems as long as they are properly packed. Only book, card, or strike–on–box matches are mailable. Strike-anywhere matches are prohibited. Here are some tips on how to properly pack and ship matches via mail.
Make sure that matches are tightly packed in their matchboxes to prevent any shifting or movement that could cause accidental ignition by rubbing against adjoining items. Loosely packed matchboxes can be filled with cotton pads to keep the matchsticks in place.
Place matchboxes and matchbooks inside a ziploc bag, remove any excess air and seal. The bag will protect the matches from moisture in case the package gets wet during transit.
Place the matchbox inside an appropriately sized box with packing materials all around to prevent movement. Bubble wrap, shredded paper, crumpled newspaper or packing peanuts can be used as packing materials.
A matchbook can be sandwiched between two cardboard pieces and inserted inside a bubble mailer. The cardboards with act as stiffeners to prevent the matchbook from getting folded. When shipping several matchbooks, box them to avoid damage.
Address and label the package with “Surface Only” or “Surface Mail Only” and take to your local post office for mailing.