1.5px
128px
Lucide Mail Warning Icon
The Lucide Mail Warning icon uses uses stroked lines with no fill — clean, legible, and versatile at any size. Compare it against similar icons in 27 other libraries on IconStash, adjust stroke width, change colors with a hex picker, and export at any size.
Interactive Customizer
About this icon
Use the Mail Warning icon
The Mail Warning icon from Lucide fits naturally in messaging apps, email clients, contact forms, notification systems, CRM dashboards, and live chat widgets. Its outline style makes it ideal for app navigation bars, toolbar buttons, form labels, and UI controls where clarity at 16–24px is critical.
Open it in IconStash to set stroke color via presets or a custom hex value, choose an exact pixel size (16–512px), control stroke width (0.1–3px), and preview against dark, light, or checkered backgrounds before downloading.
Export formats
Copy clean SVG vectors with one click, generate custom-size PNG files from 16px to 512px, export JSX/React components ready to paste into your project, or use the icon as a CSS background-mask for flexible theming.
All exports are based on the same editable vector — so the Mail Warning icon stays pixel-perfect at 16px, 24px, 48px, and any large marketing size.
Design & UX integration
Aesthetic characteristics
The Mail Warning icon follows the Lucide design system: a 24x24 grid, 2px strokes, and rounded line caps and joins. Lucide started as a community fork of Feather Icons and keeps that restraint — each glyph is reduced to the fewest strokes that still read at 16px, with no fills and no decorative detail.
UX best practices
In messaging, contact and notification UI, the Mail Warning icon should help users triage at a glance. Keep any unread badge small and anchored to the top-right corner, and never rely on the badge alone — expose the count in the accessible name so screen-reader users get the same signal.
Use in your project
React / npm — Lucide
npm install lucide-react
import { MailWarning } from 'lucide-react';
// JSX usage:
<MailWarning size={24} color="#000" />Copy the SVG markup directly from the IconStash editor to use the Mail Warning icon without any npm package — paste it into HTML, JSX, or a design tool.
Inline SVG (copy & paste)
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" role="img" aria-label="mail-warning icon"><g fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"><path d="M22 10.5V6a2 2 0 0 0-2-2H4a2 2 0 0 0-2 2v12c0 1.1.9 2 2 2h12.5"/><path d="m22 7l-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7m18 7v4m0 4v.01"/></g></svg>Library & related icons
About Lucide Icons
Clean, consistent, and ISC-licensed icon library built by the open-source community as a fork of Feather Icons. Every icon sits on a 24×24 grid with a 2px default stroke.
Browse all 1,979 Lucide Icons icons →Related searches
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Frequently asked questions
What is the Mail Warning icon?
The Mail Warning icon is a outline-style SVG icon from the Lucide library, categorized under Communication. It is designed for use in messaging apps, email clients, contact forms, notification systems, CRM dashboards, and live chat widgets. On IconStash you can preview it, customize its color and size, and export it in SVG, PNG, JSX, or CSS formats directly from your browser.
Is the Mail Warning icon free to use?
Yes. Lucide is licensed under ISC, making it free for personal and commercial use. This means you can freely use the Mail Warning icon in personal, commercial, and open-source projects. IconStash provides SVG and PNG access at no cost with no login required.
How do I use the Mail Warning icon in React?
Install the package with `npm install lucide-react`, then import the component into your React file. IconStash's detail panel shows you the exact npm command, import statement, and JSX usage snippet for every icon — just click the Code tab and copy with one click.
What is the Lucide icon library?
Clean, consistent, and ISC-licensed icon library built by the open-source community as a fork of Feather Icons. Every icon sits on a 24×24 grid with a 2px default stroke. It contains 1,979+ icons. IconStash indexes the complete Lucide collection alongside 27 other open-source libraries — 134,701 icons total — in a single unified search interface.
Can I download the Mail Warning icon as a PNG?
Yes. Open the Mail Warning icon in IconStash, set your desired pixel size (16px to 512px) in the detail panel, and click Download PNG. You can also export a multi-resolution ZIP pack containing 16, 24, 32, 48, 64, 128, 256, and 512px PNGs with a single click.
What does the outline icon style mean?
An icon in outline style uses stroked lines with no fill — clean, legible, and versatile at any size. This style is best suited for app navigation bars, toolbar buttons, form labels, and UI controls where clarity at 16–24px is critical. The Lucide Mail Warning icon follows this visual convention throughout the Lucide design system.
Can I change the Mail Warning icon's color and size before downloading?
Yes. In IconStash's editor panel, choose from six color presets (blue, slate, green, purple, red, teal) or enter a custom hex value. Drag the size slider (16–256px) or type an exact pixel value up to 512px. Changes apply instantly to the SVG preview, the PNG output, and the copied code.