An opened envelope, for mail already read and a message that has been seen. On a 24×24 grid in stroke, duotone and fill, free under MIT.
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
<path d="M10.2563 2.5588L3.2563 7.5588C2.4679 8.1219 2 9.0311 2 10L2 19C2 20.6569 3.3431 22 5 22L19 22C20.6569 22 22 20.6569 22 19L22 10C22 9.0311 21.5321 8.1219 20.7437 7.5588L13.7437 2.5588C12.7006 1.8137 11.2994 1.8137 10.2563 2.5588ZM2 10L10.8375 16.3125C11.5329 16.8092 12.4671 16.8092 13.1625 16.3125L22 10"/>
</svg>Also called
What someone searching for this drawing would have typed instead. These are the words the browser's search matches on.
- envelope
- message
- inbox
- letter
- browse
- expanded
Related icons
The rest of the mail family first, then the Mail shelf.
FAQ
Answered from mail-open's own facts: its shelf, the weights it was drawn in, its siblings and its dates.
- What is the mail-open icon for?
- An opened envelope, for mail already read and a message that has been seen. It is filed under Mail in Keyline Icons, drawn on the same 24×24 grid as the rest of the set. People look for it as email, envelope, message, inbox, letter, browse and expanded, and the browser's search matches all of those.
- What styles does the mail-open icon come in?
- All three: stroke, duotone and fill. They are drawn from the same geometry, so swapping weight never moves anything.
- Is there a square or circle version of mail-open?
- No. mail-open is drawn as a bare glyph, and the set has no boxed variant of it.
- What other icons go with mail-open?
- mail, mail-check, mail-dot, mail-minus, mail-plus and mail-x, and 12 more, all shown below. The mail family is listed first, then the rest of the Mail shelf, so the row under this one is the useful one even where a shelf runs long.
- How do I import mail-open in React?
- <MailOpen /> is the component, and the weight decides the module: stroke from "@keyline-icons/react", duotone from "@keyline-icons/react/duotone" and fill from "@keyline-icons/react/fill". It takes the usual SVG props plus a size, so <MailOpen size={16} /> and className="size-4" both work, and there is no provider or theme to set up.
- Where is the mail-open SVG?
- icons/stroke/mail-open.svg, icons/duotone/mail-open.svg and icons/fill/mail-open.svg in the repository, normalised: no wrapper, no ids and no classes to strip out. The tabs above hand you the same drawing as SVG or JSX without the download, and neither needs an install.
- When was mail-open added to the set?
- Added 18 Aug 2026. It ships in v0.1.0, so an install at that version or later has it.
Questions about the set rather than about this drawing are answered where they belong. The home page covers what the set is, how the three styles differ, why some icons come boxed and where the Figma file is; installing the set in a shadcn/ui project covers the React package, the CLI and using an icon without React. The MIT licence is stated in the footer of every page.