All Tools
Free ToolGenerator

Mailto Link Builder

Generates a mailto: URL with pre-filled subject, body, CC, and BCC, ready to paste into webpages or messages.

Mailto link
mailto:you@example.com?subject=Quick%20question&body=Hi%2C%0A%0AI%20saw%20your...
What it does

URL-encodes the mailto parameters per RFC 6068. Returns a clickable mailto link that opens the user's default mail client.

When to use

Building 'Email us' links on websites. Embedding pre-filled support emails in docs.

FAQ

Are there length limits on mailto links?+

Practical limit is ~2,000 characters. Some browsers and mail clients truncate above that.

Record generated. Now make sure it actually passes on real sends.

A correct DNS record on paper still fails 12% of the time at the receiver. Outsolvi watches every send and flags auth failures, opens that look like proxies, and bounces in real time. From $7/user/mo yearly.

Verify on a real send
Nate SummersCo-Founder, Outsolvi

Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.

Last reviewed May 25, 2026Editorially independent

We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.