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Free Tool

Email Signature Builder

Build a professional HTML email signature in minutes. Runs entirely in your browser — no account, no data collection, no strings attached.

Step 1 of 6

Choose a template

Pick the layout that fits your style.

What is an HTML email signature?

An HTML email signature is a block of formatted code that appears at the bottom of every email you send. Unlike plain-text signatures, HTML signatures support styled fonts, clickable links, profile photos, company logos, and social media icons — making every email feel polished and on-brand.

Gmail, Outlook, Apple Mail, and virtually every major email client support HTML signatures. Once you generate your signature here and paste it in, it renders automatically on every outbound email.

How to add your signature to Gmail, Outlook & Apple Mail

Gmail

  1. 1Click the gear icon (top right) → "See all settings"
  2. 2Scroll to the "Signature" section
  3. 3Click "Create new", give it a name
  4. 4Click the HTML source icon (<>) in the editor, paste your signature code
  5. 5Save changes

Outlook (desktop)

  1. 1Go to File → Options → Mail → Signatures
  2. 2Click "New" and name your signature
  3. 3Paste the HTML directly into the signature editor
  4. 4Set it as default for new messages and/or replies
  5. 5Click OK to save

Apple Mail

  1. 1Open Mail → Settings → Signatures
  2. 2Select your account, click + to create a new signature
  3. 3Uncheck “Always match my default font”
  4. 4Quit Mail, then find the signature file in ~/Library/Mail and replace its contents with your HTML
  5. 5Reopen Mail — your signature will render correctly

Why your email signature matters for outbound

Builds trust on cold outreach

A professional signature with a real photo, title, and website instantly signals legitimacy. Prospects are far more likely to reply to a human than a bare name at the bottom of an email.

Reinforces brand consistency

Every email you send is a brand touchpoint. Consistent fonts, colors, and logo placement make your company look established — even if you're a small team.

Drives clicks without extra effort

A CTA button in your signature — 'Book a Call', 'View case study', 'Visit our site' — generates passive clicks from people already reading your email.

Improves deliverability signals

Emails with complete, professional-looking signatures see lower spam complaint rates. Inbox providers use engagement signals to judge sender reputation over time.

Frequently asked questions

Is this email signature generator really free?

Yes, completely free. No account required, no usage limits, no watermarks. Everything runs in your browser — we never see your data.

Will my signature work in Gmail and Outlook?

Yes. All three templates use table-based, inline-style HTML — the standard approach for maximum compatibility across Gmail, Outlook, Apple Mail, and mobile clients.

Why does my photo need to be a URL?

Email clients block externally uploaded images that are base64-encoded inline. Hosting your photo at a stable URL (e.g. your company website or LinkedIn) ensures it renders reliably for every recipient.

Can I use my LinkedIn profile photo?

Yes. Open your LinkedIn profile, click your photo to view it full-size, right-click the image, and select 'Copy image address'. Paste that URL into the Profile Photo field.

What is a CTA button in an email signature?

A call-to-action button is a small clickable link styled as a button — for example 'Book a Call' linking to your Calendly. Enable it in the Social Links step and enter a label and URL.

How do I change the accent color?

Go to Step 5 (Style Options). You can choose from eight preset colors or enter any hex code manually. The accent color applies to the divider line, contact icons, and CTA button.

Improve your email deliverability

A great signature is one part of the equation. If your emails aren't reaching the inbox, the problem is usually warming, authentication, or domain reputation.

Email Warming →Deliverability Guide 2026 →