How do I use the Email Signature Generator?

The Valid Email Checker Email Signature Generator builds a professional HTML email signature from a form. The output uses table-based layout with inline CSS, which means it survives the rendering quirks of every major email client — Gmail, Outlook, Apple Mail, Yahoo Mail, Thunderbird, and the rest. No signup, no watermark, no upload to our servers.

Step by step

1. Open /email-signature-generator.
2. Pick a template from the chooser screen, or click Start from scratch to build from a blank canvas.
3. Fill in the basic fields: name, job title, company, email, phone, website.
4. Optional: upload a photo or company logo. The image gets embedded as a base64 data URL so recipients see it even if your domain blocks remote images.
5. Optional: enable social icons and add URLs for LinkedIn, Twitter/X, GitHub, Instagram, Facebook, or any other platform you want to feature.
6. Optional: add a promotional banner, disclaimer text, or extra contact lines from the editor sidebar.
7. Customize colors, fonts, and spacing in the style controls.
8. When you are happy with the preview, click Copy HTML to grab the markup or Download to save an .html file.

Installing in Gmail

1. Open Gmail → Settings (gear icon) → See all settings.
2. In the General tab, scroll to the Signature section.
3. Click "Create new" if you do not already have a signature, or pick the one you want to update.
4. Paste the HTML from the generator into the signature editor. Gmail accepts pasted HTML directly — formatting carries through.
5. Save changes at the bottom of the page.

Installing in Outlook

1. Outlook desktop: File → Options → Mail → Signatures. Click New, name it, paste the HTML into the editor.
2. Outlook on the web: Settings → Mail → Compose and reply. Paste the HTML into the signature block and save.
3. Outlook mobile apps do not support custom HTML signatures directly — Microsoft sync from the desktop/web version covers this.

Apple Mail

Apple Mail is a little fussier. Create a placeholder signature in Mail → Preferences → Signatures first, then quit Mail. Locate the signature file under ~/Library/Mail/V10/MailData/Signatures/ (path varies by macOS version), and replace its content with the HTML from the generator. Restart Mail. There are also paid third-party utilities that handle the file replacement for you.

Once your signature is set up, the Email Address Generator and the DNS tools round out the rest of the free utility set on Valid Email Checker.