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Gmail · Desktop & Mobile

How to add an HTML email signature in Gmail

Compatibility disclaimer: SigForge signatures are built using email-safe HTML and tested against major Gmail versions. However, email client rendering can vary. BlueDevLabs Ltd accepts no liability for rendering issues. See our full terms and conditions.

Before you start

Have your SigForge HTML signature code copied to your clipboard before following these steps.

Installing in Gmail on desktop

  1. Open Gmail Settings

    Go to gmail.com, click the gear icon in the top right, then click See all settings.

  2. Navigate to Signatures

    In the General tab, scroll to the Signature section. Click + Create new and give it a name.

  3. Paste your signature

    Save your signature as a .html file, open it in Chrome, press Cmd+A then Cmd+C to copy, then paste into the Gmail signature box with Cmd+V.

  4. Set as default and save

    Under Signature defaults, set your signature as default. Scroll to the bottom and click Save Changes.

Tip: The easiest method is to save your HTML as a file, open in Chrome, select all, copy, then paste directly into Gmail.

Gmail mobile app

The Gmail mobile app does not support rich HTML signatures. Use Gmail in Chrome on mobile with "Request desktop site" enabled as a workaround.

Troubleshooting

Signature appears as plain text

Try the "open in Chrome" method rather than pasting raw HTML code.

Images not showing

SigForge embeds images as base64 data. Recipients may need to click "Display images" if their client blocks them by default.

Other email clients

Outlook setup guide Apple Mail setup guide