Abstract: A two-way envelope includes first and second panels forming a content receiving pocket having multiple edges. A side flap is joined to one of the panels folded into the pocket on a fold line, and adhesively connected to the other panel within the pocket, sealing one edge of the pocket. The side flap includes a tear line spaced from the fold line. When not torn, the tear line provides a portion of the edge seal. The tear line, when torn, opens the pocket along the edge and forms a second flap edge, facilitating withdrawal of the flap from the pocket and removal or replacement of the contents of the envelope. The flap may be folded along the fold line over the other panel and adhered to the outside surface of the other panel to reseal the pocket for reuse of the envelope.