Is this tool free to use?

Yes, completely free with no account required.

Does my data leave my device?

No. All link generation happens in your browser. Your email addresses and message are never sent to any server.

Does it work on mobile?

Yes. Generated mailto links open the native email app on iOS and Android.

Mailto Link Builder — Build mailto: Links with Pre-filled Fields

Mailto Link Builder

Build mailto: links with pre-filled to, cc, bcc, subject, and body.

100% client-side · no upload

BCC

Subject

Body

How to use

Fill in the recipient email and any optional fields (CC, BCC, subject, body).
Copy the generated mailto: link and use it in HTML as <a href="mailto:...">.
Click "Open in email app" to test the link in your default email client.

Common use cases

Add a "Contact us" button to a website that pre-fills a support subject line, or create a feedback link that includes a template body. Useful for newsletters, documentation pages, or any context where you want a one-click email action.

よくある質問

Is this tool free to use?: Yes, completely free with no account required.
Does my data leave my device?: No. All link generation happens in your browser. Your email addresses and message are never sent to any server.
Does it work on mobile?: Yes. Generated mailto links open the native email app on iOS and Android.