July 8, 2026
TutorialHow to Add a CTA Button to Your Email Signature
Drive bookings and demos from every email with a CTA button in your signature — without breaking client compatibility.
A single clear CTA in your signature converts passive contacts into booked meetings. The key is one primary action — not five competing buttons.
Best CTA types for signatures
- Book a demo / calendar link (Calendly, HubSpot meetings)
- View portfolio or case studies
- Download brochure or whitepaper
- Start free trial (for product companies)
Design rules for email buttons
- Table-based button (not CSS `<button>`)
- High contrast text on solid background color
- Minimum 44 px tap target for mobile
- One CTA per signature
Add CTA in ProSignature
Use the CTA widget in the email signature generator. Pick a template, add button label and URL, preview, then export.
Measure results
Use UTM parameters on CTA links (?utm_source=email_signature) to track clicks in analytics — especially for sales teams rolling out new signatures.