Multi-use envelope

A multi-use envelope comprising:

• first and second side walls being permanently sealed so as to form an interior cavity having an opening;
• a reusable closure flap foldably connected to the first side wall along a fold line, wherein the closure flap substantially covers the opening and lies on the second side wall when folded along the fold line;
• a pair of adhesive regions extending along the closure flap, each of the adhesive regions extending generally parallel to the first fold line and lying proximate the second side wall when the closure flap is folded along the fold line to lie on the second side wall;
• a first tear strip in the closure flap, the first tear strip located substantially between the pair of adhesive regions;
• a first security block located on the closure flap, the fast security block being intersected by the tear strip;
• a second tear strip in the closure flap, the second tear strip located substantially between the fold line and the adhesive region closest to the fold line;
• and
• a second security block located on the closure flap, the second security block being intersected by the second tear strip;
• a fast matching security block adapted to receive an indicia matching that placed in the first security block, the first matching security block being located on the envelope distal from the fast security block;
• and
• a second matching security block adapted to receive an indicia matching that placed in the second security block the second matching security block being located on the envelope distal from the second security block.