Keep it Concise
A cold email signature should be direct and to the point. Your name, title, and contact details are typically all that’s needed. A signature that’s too long can distract from your main message, so it’s important to keep it brief.
Image in Your Signature? Maybe, Maybe Not
A professional headshot or company logo can personalize your email, but it’s not always necessary. If you’re sending a small number of cold emails, adding an image is unlikely to cause issues.
However, at a larger scale, images can increase the chances of being flagged as spam. If you choose to include one, keep it small and professional. For better deliverability, always embed images rather than linking them externally—this prevents broken placeholders and helps your email reach the primary inbox.
Include Relevant Links
Add any link that boosts your credibility, like your LinkedIn profile or company website. Make sure you do inbox testing to ensure that ESPs are not putting your email in spam because of those links. Avoid link overload as it can distract from your message and trigger spam filters. Each link should serve a clear purpose in moving conversations forward.
Showcase Social Proof
If your business or you as an individual have received industry recognition or awards, include them in your signature. Badges from trusted sources like G2 or Capterra can build credibility and establish your authority in the industry. However, don’t overdo it with too many symbols or logos—one or two recognizable achievements will suffice and help build trust.
Add a Clear Call to Action (CTA)
Your email signature is also a great place to guide the recipient on what to do next. Whether it’s scheduling a meeting, signing up for a webinar, or downloading an eBook, your call to action should make the next step obvious.
Also Read: 234 Email Call to Action Examples: The Psychology Playbook (2025)
A link to a calendar scheduling tool can help eliminate back-and-forth and streamline the conversation.
Keep Your Information Updated
Regularly review and update your signature to maintain professionalism. Outdated information like old job titles, broken links, or expired promotional offers can damage your credibility. Set a quarterly reminder to verify all elements in your signature are current and functional.
Consider Physical Address Carefully
Including a physical address can boost legitimacy, especially for established businesses, but evaluate if it’s necessary for your cold outreach. For remote teams or solopreneurs, consider using a business district virtual address instead of a residential one.
Adding a Phone Number
Direct phone access can speed up deal closure, but it can also mean managing unexpected calls and timezone confusion.
Note: Some outreach teams noticed lower response rates when including phone numbers, as auto-hyperlinked numbers can trigger spam filters. Consider testing both approaches or using a booking link instead.
Skip the Redundant Email Address
Including your email address in your signature is unnecessary since you’re already using it to send the message. Save that space for more valuable elements like your LinkedIn profile or a compelling call to action.
By focusing on these elements, your cold email signature will complement your outreach efforts effectively. Keep it simple, personal, and actionable, and make sure it aligns with your branding and communication goals.