How do I add a line break in a mailto body?

Press Enter in the Body box. Each line break is written %0D%0A, a carriage return plus a line feed, which section 5 of RFC 6068 requires. A bare %0A is not what the RFC specifies.

How do I add CC and BCC to a mailto link?

Fill in the CC and BCC fields. They follow the To address as ?cc= and &bcc=, so To a@example.com; b@example.com, CC c@example.com and BCC d@example.com give mailto:a@example.com,b@example.com?cc=c@example.com&bcc=d@example.com. In any field you can separate addresses with commas or semicolons; the link always uses commas.

Why does & or # break a mailto link?

& starts the next field and # starts a fragment, so inside a subject or body they must be encoded, & as %26 and # as %23. The generator does it for you: the subject Q&A becomes subject=Q%26A.

How do I put a mailto link in HTML?

Press Copy as HTML Link. With To help@example.com, subject Hi and body Thanks it copies Email us , with each & between fields written & for HTML. Replace Email us with your own link text.

Is there a length limit for mailto links?

RFC 6068 sets none. Some mail apps and browsers are reported to cut very long links, and 2,000 characters is the figure often quoted, so the generator shows a warning above it. That figure is not a standard.

Can a mailto link have no email address?

Yes. In the RFC 6068 syntax the address is optional, so mailto:?subject=Read%20this&body=... is valid. It suits a share-by-email link, where the visitor picks the recipient. With every field empty the generator shows mailto: alone.

Mailto Link Generator

Make a mailto: link with To, CC, BCC, subject and body. Body line breaks become %0D%0A as RFC 6068 requires, and the link copies as HTML too. How it works

Separate several addresses with commas or semicolons. Spaces around them are removed.

BCC

Subject

Body

About the Mailto Link Generator

In a mailto link a space is written %20 and a line break in the body %0D%0A, as RFC 6068 requires, so a subject of Order 1234 and a two-line body give mailto:[email protected]?subject=Order%201234&body=Hello,%0D%0AMy%20order%20has%20not%20arrived. The generator builds that from the To, CC, BCC, subject and body you type, and copies it as a plain link or as an HTML <a> tag.

How characters are written in the subject and the body

Character	In the subject	In the body
space	%20	%20
line break	%20	%0D%0A
&	%26	%26
?	%3F	%3F
#	%23	%23
=	%3D	%3D
%	%25	%25
+	%2B	%2B
/	%2F	%2F
:	%3A	%3A
;	%3B	%3B
@	@	@
,	,	,
é	%C3%A9	%C3%A9

A line break in the subject is replaced by a space, because RFC 6068 says fields other than the body should not contain one. The RFC allows @ and the comma unencoded, so addresses stay readable.

Example links

Fields filled in	Link
To [email protected], subject Order 1234, body Hello, then My order has not arrived. on the next line	mailto:[email protected]?subject=Order%201234&body=Hello,%0D%0AMy%20order%20has%20not%20arrived.
To [email protected]; [email protected], CC [email protected], BCC [email protected]	mailto:[email protected],[email protected][email protected]&[email protected]
Subject Read this, body https://example.com/a?b=1&c=2	mailto:?subject=Read%20this&body=https%3A%2F%2Fexample.com%2Fa%3Fb%3D1%26c%3D2
Nothing	mailto:

Frequently asked questions

How do I add a line break in a mailto body?: Press Enter in the Body box. Each line break is written %0D%0A, a carriage return plus a line feed, which section 5 of RFC 6068 requires. A bare %0A is not what the RFC specifies.
How do I add CC and BCC to a mailto link?: Fill in the CC and BCC fields. They follow the To address as ?cc= and &bcc=, so To [email protected]; [email protected], CC [email protected] and BCC [email protected] give mailto:[email protected],[email protected][email protected]&[email protected]. In any field you can separate addresses with commas or semicolons; the link always uses commas.
Why does & or # break a mailto link?: & starts the next field and # starts a fragment, so inside a subject or body they must be encoded, & as %26 and # as %23. The generator does it for you: the subject Q&A becomes subject=Q%26A.
How do I put a mailto link in HTML?: Press Copy as HTML Link. With To [email protected], subject Hi and body Thanks it copies <a href="mailto:[email protected]?subject=Hi&body=Thanks">Email us</a>, with each & between fields written & for HTML. Replace Email us with your own link text.
Is there a length limit for mailto links?: RFC 6068 sets none. Some mail apps and browsers are reported to cut very long links, and 2,000 characters is the figure often quoted, so the generator shows a warning above it. That figure is not a standard.
Can a mailto link have no email address?: Yes. In the RFC 6068 syntax the address is optional, so mailto:?subject=Read%20this&body=... is valid. It suits a share-by-email link, where the visitor picks the recipient. With every field empty the generator shows mailto: alone.

Where mailto links are used

Web developers put a mailto link behind a Contact or Report a problem button, so the visitor's mail app opens with the address, the subject and the first lines already filled in. Support teams give each kind of request its own fixed subject, such as Refund request, so incoming mail can be sorted by it. A link with no address, only a subject and a body, works as a share-by-email button.

How the link is encoded

The link is mailto:<to>?cc=<cc>&bcc=<bcc>&subject=<subject>&body=<body>, following RFC 6068, and empty fields are left out. Addresses in To, CC and BCC are split at commas, semicolons and line breaks, trimmed and joined with commas. Every value is percent-encoded as UTF-8: a space becomes %20, & becomes %26, # becomes %23 and é becomes %C3%A9, while @ and the comma stay readable. A line break in the body becomes %0D%0A, the carriage return and line feed that section 5 of the RFC requires; a line break in the subject is replaced by a space, because the RFC says other fields should not contain one. Example: To [email protected], subject Order 1234, body Hello, with My order has not arrived. on the next line gives mailto:[email protected]?subject=Order%201234&body=Hello,%0D%0AMy%20order%20has%20not%20arrived.

Fun Fact: RFC 6068, published in October 2010, is the current definition of the mailto scheme. It obsoleted RFC 2368, the earlier definition of the same scheme.

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