How to write a compliant email signature for cold outreach?

A proper email signature meets legal requirements while maintaining professional presentation.

Required elements:

Sender identification: Your name and company name

Physical address: Required by CAN-SPAM, valid postal address

Unsubscribe mechanism: Clear link or instruction to opt out

Contact information: Way to reach you (website, phone)

Recommended elements:

Title or role (establishes credibility)

Company website (allows verification)

LinkedIn profile (for professional context)

What to avoid:

Excessive disclaimers (walls of legal text)

Multiple images or logos (deliverability concerns)

Social media icons unless relevant

Promotional taglines or CTAs in signature

Formatting considerations:

Plain text performs better than HTML signatures in cold email

Keep it concise (4 to 6 lines maximum)

Ensure all links work and are trustworthy

Test how signature renders in different email clients

The signature should identify you clearly without overwhelming the message content.