Inbox black outline icon
Open envelope with a lined letter sheet inside a circular outline
About the Inbox black outline icon
An open envelope drawn inside a thin circular frame, with a sheet of paper carrying five ruled text lines lifting out of the flap. The pairing of envelope and readable letter reads instantly as a received, opened message rather than a sent one, which makes it a clean fit for an inbox tab in a webmail client, a notifications panel, a contact block on a landing page, a helpdesk ticket queue or an office newsletter slide.
The composition is symmetric: the envelope's diagonal folds form an X that guides the eye to the letter centered above them, and the outer circle keeps the mark balanced next to round avatar or status badges. It sits naturally beside send, archive and trash icons from the same set. Because the ruled lines are fine, render it at 24px or larger so the letter stays legible.
This is the black outline version of the inbox 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.
