Mail Sealed Envelope Back black outline icon
Outline icon of a sealed envelope seen from the back with four folded flaps
About the Mail Sealed Envelope Back black outline icon
A wide rectangular envelope is drawn from the reverse side, with four triangular flaps folded inward so their diagonals meet at a single point just below center, forming a sealed closure. Nothing else interrupts the shape, which keeps it neutral for inbox and unread-mail buttons, contact and footer links, newsletter signup forms, email marketing slides, and postal or delivery tracking screens.
Proportions follow a standard letter format, wider than it is tall, and the flap diagonals split the rectangle into four clean triangles for a crisp geometric read. The single stroke weight keeps it aligned with phone, pin and chat icons in a contact row. It stays sharp down to 16 px thanks to the absence of inner detail.
This is the black outline version of the mail sealed envelope back icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
