---
title: "Mail Send Envelope Icon | Free Download PNG & SVG | Flex Duo"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/mail-send-envelope--24620
canonical_url: "https://www.streamlinehq.com/icons/download/mail-send-envelope--24620"
summary: "Clean duotone icon of an envelope with a curved flap. Used for sending emails and messages."
---

# Mail Send Envelope icon

The Mail Send Envelope icon shows a rounded envelope with a curved flap across its upper half. Drawn in the duotone style on a 14px grid with a 1px stroke so its smooth curves stay clear at small sizes. Use it for email buttons, message composition, contact forms, mail actions, and communication interfaces. It belongs to Flex Duo set in the Flex family.

## Preview

![Clean duotone icon of an envelope with a curved flap. Used for sending emails and messages.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/send/mail-send-envelope-q4c1y69g5gly6dfjgdc3b.png/mail-send-envelope-b6tehp6nnqj62onuothxp8.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Mail Send Envelope
- **Type**: Icon
- **Set**: [Flex Duo](/icons/flex-duo.md) — Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal. The Duo style is perfect for projects that require differentiation between actions, using color to convey meaning effectively. It also allows you to customize the line thickness. All Flex Duo icons are designed on a 14px grid with a 1px default stroke and two customizable colors.
- **Family**: [Flex](/icons/flex.md) — Fluid icons
- **Style**: Duo, Filled, Stroke
- **Category**: Mail › Send
- **Default size**: 14px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: envelope, mail, send, message, email, letter, communication, post, inbox, sealed, unopened, close, correspondence

## Download

- [Download Mail Send Envelope on Streamline](https://www.streamlinehq.com/icons/download/mail-send-envelope--24620)

## Also available in other styles

- [Mail Send Envelope — Flex Line](/icons/download/mail-send-envelope--24407.md) (Pro)
- [Mail Send Envelope — Flex Remix](/icons/download/mail-send-envelope--28620.md) (Pro)
- [Mail Send Envelope — Flex Gradient](/icons/download/mail-send-envelope--27773.md) (Pro)
- [Mail Send Envelope — Flex Flat](/icons/download/mail-send-envelope--24781.md) (Pro)
- [Mail Send Envelope — Flex Neon](/icons/download/mail-send-envelope--30295.md) (Pro)
- [Mail Send Envelope — Flex Pop](/icons/download/mail-send-envelope--31213.md) (Pro)
- [Mail Send Envelope — Flex Solid](/icons/download/mail-send-envelope--24247.md) (Pro)

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