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Tools / HTML email signature generator

HTML email signature generator

Build professional email signatures with cross-client table markup compatible with Gmail, Apple Mail, Outlook, and Thunderbird. Live visual preview with one-click HTML copy and direct paste.

Runs entirely in your browser

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About this tool

A professional email signature needs to render consistently across Gmail, Apple Mail, Outlook and Thunderbird — clients that handle HTML very differently. This generator builds table-based signatures, which is the markup that survives those clients, with support for an avatar, contact details, badges and social icons, and shows a live preview as you edit.

Table-based layout is deliberately old-fashioned because modern CSS layout is unreliable in email; tables are what render predictably everywhere. The tool handles that for you and provides one-click HTML copy so you can paste the signature straight into your mail client’s settings.

It runs in your browser, so your contact details are not uploaded. Use it to create a clean, on-brand sign-off for yourself or a whole team, then test it by sending yourself a message in each client you care about.

Frequently asked questions

Why are email signatures built with tables?
Because email clients handle modern CSS layout inconsistently. Table-based HTML renders predictably across Gmail, Outlook, Apple Mail and others, which is why the generator uses it.
Which email clients does it target?
It produces markup compatible with major clients including Gmail, Apple Mail, Outlook and Thunderbird.
How do I install the signature?
Copy the generated HTML and paste it into your mail client’s signature settings. The one-click copy is designed for that direct paste.
Can I add a photo and social icons?
Yes. You can include an avatar, badges and social icons alongside your contact details, with a live preview as you build it.
Are my details kept private?
Yes. The signature is built in your browser, so the information you enter is not uploaded.

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