7 Common Email Signature Mistakes (And How to Fix Them)
Avoid broken layouts, missing images, and unprofessional signatures with these practical fixes.
1. Using local image paths
Recipients cannot see files on your computer. Host logos on your server or CDN and use absolute https:// URLs in the signature HTML.
2. Copying raw HTML into Gmail wrong
Gmail may strip styles if you paste from a code editor. Use the visual preview copy method from your generator export dialog instead.
3. Oversized logos and banners
Large images slow load time and trigger spam filters. Keep logos under 150 px wide and banners under 600 px.
4. Too many social icons
More than five icons clutters mobile view. Keep platforms you actively maintain — usually LinkedIn plus one company channel.
5. Outdated job title or phone
Signatures outlive business cards. Schedule a quarterly review or tie updates to HR system changes.
6. Designing like a webpage
Flexbox, web fonts, and JavaScript do not work in email. Use table-based layouts from tested templates.
7. Skipping client-specific testing
Always send tests to Gmail, Outlook, and mobile. Build in our email signature generator with live preview before export.