Mailto Link Generator

How do I create a mailto: link with a subject, body, Cc and Bcc?

Open AnyTool Mailto Link Generator, type the recipient (or several, separated by commas), then add Cc, Bcc, a subject and a plain-text body, and it builds a correctly URL-encoded mailto: link instantly. It also gives you a ready-to-paste HTML link and a styled HTML email button, and a Test button opens the link in your default email app to check it. Everything runs in your browser — no email is sent and nothing is uploaded; it just creates a link.

To, Cc and Bcc each accept multiple addresses — separate them with commas
Subject and a multi-line plain-text body, with line breaks preserved
Values are URL-encoded with encodeURIComponent so the link never breaks
Outputs: the raw mailto: link, an HTML <a> link and an HTML email button
Test button opens your default mail app · 100% client-side, nothing sent or uploaded

What is

mailto: URI scheme

A mailto: link is a hyperlink using the mailto: URI scheme that opens the visitor’s default email client with a pre-filled draft. Its form is mailto:address?subject=…&body=…&cc=…&bcc=…, where multiple recipients are comma-separated and each query value is URL-encoded (spaces become %20, a line break becomes %0D%0A). Clicking it does not send mail — the person reviews the draft and sends it themselves.

Generators

Related terms

URL encodingCc and BccDefault mail clientHTML anchorencodeURIComponent

Frequently Asked Questions

A mailto: link never sends mail on its own — it is a hand-off to whatever email client the user has set as their default, opening a new draft with the To, Cc, Bcc, subject and body already filled in. The person sees the draft and chooses to send it, edit it or close it. This tool likewise sends nothing: it only assembles the link in your browser. Because of that, mailto links cannot be used to silently email someone, and they have no way to confirm delivery the way a server-side form would.

No. A mailto: link only opens the user’s default email app with the fields pre-filled; they still review the draft and press send themselves.

For several recipients, list the addresses separated by commas — for example mailto:a@x.com,b@x.com. Carbon copy and blind copy are added as query parameters, cc= and bcc=, each of which can itself hold a comma-separated list. AnyTool Mailto Link Generator lets you type comma-separated addresses in the To, Cc and Bcc fields and joins them correctly, placing the To recipients before the ? and the cc/bcc parameters after it, all URL-encoded so commas and special characters do not break the link.

Separate addresses with commas in the To, Cc or Bcc field. The To addresses go before the ?, and cc= and bcc= are added as query parameters.

A mailto: link is a URL, so the subject and body have to follow URL rules. Unencoded spaces, punctuation and especially & or # would prematurely end or corrupt the link, which is the number-one reason mailto links fail. This tool encodes every query value with encodeURIComponent: spaces become %20, line breaks become %0D%0A and reserved characters are escaped, while the @ in addresses is deliberately left intact so clients can still parse them. The result is a link that opens cleanly in any compliant email client.

Because spaces, line breaks and characters like &, ? and # would otherwise break the URL. They are escaped — a space becomes %20 and a line break %0D%0A.

Webmail like Gmail or Outlook on the web can catch mailto: links, but only when the user has registered it as their default mail handler — through the browser’s protocol-handler prompt or their operating system settings. If no default email client is configured, clicking the link may open nothing or show a prompt to set up email. Behaviour also varies across Chrome, Firefox, Safari and Edge, and pre-filled fields may not always carry over after a login redirect. Because of that, it is good practice to offer an alternative contact method alongside a mailto link.

Only if that webmail service is set as the system or browser default mail handler. Otherwise the link may do nothing or prompt to set up an email account.

Build a correctly URL-encoded mailto: link with To, Cc, Bcc, subject and a plain-text body, plus a copyable HTML link and styled email button — entirely in your browser, nothing sent or uploaded.

Features

To, Cc and Bcc with multiple comma-separated recipients
Subject and multi-line plain-text body, line breaks preserved
Correct URL encoding (encodeURIComponent) — the @ in addresses kept intact
Outputs the raw mailto: link, an HTML <a> link and an HTML email button
Test button opens your default mail app · 100% client-side, nothing sent

PriceFree

CategoryGenerator

PlatformAll (browser-based)

PrivacyThe link is assembled locally from what you type; no email is sent and nothing is uploaded, logged or stored

Input: Recipient addresses (To, Cc, Bcc), Subject text, Plain-text body, Link text

Output: mailto: link, HTML <a> link, HTML email button

Detailed Explanation

Methodology

How the Mailto Link Generator Builds the Link

AnyTool Mailto Link Generator assembles a standards-compliant mailto: URL in the browser from a small input model. The To, Cc and Bcc fields each accept several addresses; the tool splits them on commas, semicolons or newlines, trims them and drops blanks. The To recipients are joined with commas and placed before the ? — kept literal, since the @ and the comma separators must stay unencoded for clients to parse them — while cc= and bcc= are added as query parameters. The subject and the multi-line plain-text body are appended as subject= and body=. Every query value is escaped with encodeURIComponent, so a space becomes %20, a CR-LF line break becomes %0D%0A and reserved characters such as &, ? and # are escaped. The result, mailto:recipients?cc=…&bcc=…&subject=…&body=…, updates live as you type.

To, Cc and Bcc accept multiple addresses split on commas / semicolons / newlines
To recipients are comma-joined before the ? and left literal (the @ is preserved)
cc=, bcc=, subject= and body= are added as query parameters in order
Query values are URL-encoded with encodeURIComponent — line breaks → %0D%0A
The mailto: link is built entirely client-side and updates in real time

Technical Details

Three Outputs and the Test Button

Beyond the raw mailto: link, the tool emits two ready-to-paste HTML snippets: a plain anchor, <a href="mailto:…">your text</a>, and a styled HTML email button — an inline-styled anchor you can drop into a web page, email signature or template. The visible click text is taken from a Link text field, and both snippets are HTML-escaped so the link text and href are safe to paste. Each output has its own copy button. A live preview renders the link as a clickable accent button, and a Test action sets window.location to the mailto:, handing it to the user’s default email client so they can confirm the draft opens with the right fields. A lightweight lint warns about addresses that do not look valid, an empty To field (still a valid mailto:?… link), and very long bodies that some clients truncate.

Outputs: raw mailto: link, HTML <a> link, and a styled HTML email button
Link text is customisable; href and text are HTML-escaped for safe pasting
Live clickable preview plus a Test button that opens your default mail app
Lint flags invalid-looking addresses, an empty To, and over-long bodies
Per-output copy buttons; a sticky mobile bar copies the link

Privacy & Security

Privacy and the Honest Limits of mailto:

Everything happens in the browser: the addresses and text you type are used only to build the link string locally, and no email is ever sent — nothing is transmitted, uploaded, logged or stored. The honest caveats are built into the tool. A mailto: link opens the visitor’s default email client with the fields pre-filled but does not send the message; the person reviews and sends it. Webmail such as Gmail or Outlook on the web only catches the link when it is registered as the system or browser default mail handler, and behaviour differs across Chrome, Firefox, Safari and Edge. The body is plain text only — HTML and rich formatting are not supported — and very long bodies may be truncated by some clients or browsers. For structured data or attachments a contact form is the better choice, so it is wise to offer an alternative way to make contact.

Mailto link building: in-browser (AnyTool) vs typical online generators
Capability	AnyTool	Typical online generators
Recipients	To, Cc, Bcc — multiple, comma-separated	Often single To + subject
Encoding	encodeURIComponent — line breaks → %0D%0A	Sometimes partial or broken
Outputs	mailto: link + HTML link + HTML button	Usually link only
Preview / test	Live clickable preview + opens your mail app	Rarely
Validation	Warns on invalid address, empty To, long body	Usually none
Processing	Runs in your browser	Often server-side
Privacy	No email sent, nothing uploaded	May log what you type

AnyTool builds the link locally, encodes every value correctly, and never sends an email or uploads anything.

Cite This Page

Title: Mailto Link Generator (build a URL-encoded mailto: link with To, Cc, Bcc, subject and body, plus HTML link and button)
Author: AnyTool
Published: January 1, 2026
Modified: February 8, 2026
Section: Generators
URL: https://www.anytool.tech/mailto-link-generator

Formatted Citation

AnyTool. "Mailto Link Generator (build a URL-encoded mailto: link with To, Cc, Bcc, subject and body, plus HTML link and button)." AnyTool, January 1, 2026. https://www.anytool.tech/mailto-link-generator

A privacy-first, 100% client-side mailto link generator that assembles a standards-compliant mailto: URL in the browser. The To, Cc and Bcc fields each accept multiple addresses, split on commas, semicolons or newlines and trimmed; the To recipients are comma-joined and placed before the ? and kept literal so the @ and separators parse, while cc=, bcc=, subject= and body= are added as query parameters. Every query value is escaped with encodeURIComponent — spaces become %20, a CR-LF line break becomes %0D%0A, and reserved characters such as &, ? and # are escaped — producing mailto:recipients?cc=…&bcc=…&subject=…&body=… that updates live. Alongside the raw link it emits two ready-to-paste HTML snippets, an anchor (<a href="mailto:…">text</a>) and an inline-styled HTML email button, both HTML-escaped, with customisable click text and per-output copy buttons; a live clickable preview and a Test button set window.location to the mailto: to open the user’s default mail client. A lightweight lint warns about addresses that do not look valid, an empty To (still a valid mailto:?… link) and very long bodies that some clients truncate. Nothing is sent and nothing is uploaded, logged or stored — the link is built locally and the page works offline once cached. The tool is honest about mailto behaviour: it opens the default email client with fields pre-filled but does not send the message, webmail like Gmail or Outlook only catches it when set as the default mail handler, browsers handle the scheme differently, the body is plain text only, and a contact form is better for structured data or attachments.