Free tool
Email signature generator
Generate an email signature with a testimonial or trust badge. Drop it in Gmail, Outlook, or Apple Mail — free, no account needed.
Tips for using email signatures for social proof
Keep it compact
A signature with social proof should be no taller than 150–200px. Too much real estate distracts from your email content.
Rotate testimonials
Use a different quote every few weeks. Fresh social proof keeps your signature from becoming background noise to repeat recipients.
Include a subtle CTA
Add a short link like "See our reviews" or "Watch customer stories" below the quote. Make it optional, not pushy.
Match your brand
Use your brand colors, logo, and fonts so the signature feels like a natural extension of your email, not an ad.