✉️ SignMyEmail
Design

Email Signature Design Tips — What to Include and What to Avoid

By SignMyEmail Team

Your email signature is a mini-advertisement that appears on every message you send. Getting the design right can enhance your professional image, while a poorly designed signature can undermine your credibility. In this guide, we'll share expert tips on designing an email signature that impresses.

What to Include in Your Email Signature

Must-Have Elements

  • Full Name: Always include your complete name in a prominent, easy-to-read format.
  • Job Title: Your professional title helps establish credibility and role clarity.
  • Company Name: Include your organization to provide context and reinforce brand identity.
  • Email Address: Your professional email is essential contact information.
  • Phone Number: A direct phone line enables quick follow-up and personal connection.

Optional But Valuable Elements

  • Website URL: Link to your company website for more information.
  • Office Location: If your company has multiple locations, specify yours.
  • Professional Photo: A small headshot can add a personal touch (use sparingly).
  • Social Media Links: Connect on LinkedIn, Twitter, or professional networks.
  • Company Logo: Reinforces brand identity (keep it small).
  • Call-to-Action: A button linking to scheduling, contact form, or service (if relevant).

Design Best Practices

1. Keep It Simple and Clean

Your signature should be easy to scan and digest quickly. Avoid excessive decoration, complex layouts, or too much information. White space is your friend — it makes your signature easier to read and more professional-looking. Think minimalist, not maximalist.

2. Use a Vertical, Single-Column Layout

Stack information vertically rather than arranging it horizontally. Single-column layouts work better across different email clients and mobile devices. This ensures your signature displays properly regardless of screen size or email platform.

3. Choose Email-Safe Fonts

Not all fonts are supported by every email client. Stick to universally supported fonts:

  • Arial
  • Helvetica
  • Georgia
  • Verdana
  • Trebuchet MS

These fonts render consistently across Gmail, Outlook, Apple Mail, and other clients. Avoid custom or decorative fonts that may not display properly.

4. Apply Appropriate Font Sizes

Use a clear visual hierarchy with different font sizes:

  • Name: 13-15px (bold)
  • Title: 11-12px
  • Contact info: 11-12px

Make sure text is large enough to read easily on mobile devices, but not so large that it dominates the signature.

5. Use Color Strategically

Use your brand colors but keep it professional. Good practices include:

  • Use one primary brand color for accents
  • Keep body text dark (black, dark gray, or navy)
  • Use color to highlight important elements (name, links)
  • Avoid bright neon colors that are hard on the eyes
  • Ensure sufficient contrast for readability

6. Optimize Images

If you include images (logo, photo), follow these guidelines:

  • Keep file sizes small (under 100KB total)
  • Use common formats (JPG, PNG)
  • Optimize for web to reduce file size
  • Use proper alt text for accessibility
  • Embed images using base64 encoding to ensure display

7. Use Separators Wisely

A subtle line separator can help organize information visually. Use simple lines in your brand color to separate sections. Avoid excessive decoration or multiple separators.

What to Avoid

Don't: Use Custom or Decorative Fonts

Fonts like Comic Sans, cursive fonts, or trendy custom typefaces may not render in all email clients. Your recipient might see a default font, ruining your design. Stick with web-safe fonts that work everywhere.

Don't: Include Personal Information

Your email signature is professional communication. Avoid including:

  • Personal phone numbers or addresses
  • Irrelevant social media (TikTok, Instagram, Snapchat)
  • Personal quotes or casual language
  • Political, religious, or controversial statements
  • Memes or unprofessional images

Don't: Make It Too Large

A good rule of thumb: your signature shouldn't exceed 1/4 to 1/3 of your email. If you're sending multiple emails daily, a huge signature increases bandwidth usage and looks unprofessional. Keep it compact and scannable.

Don't: Use Animated GIFs or Complex HTML

Most email clients don't support animations or complex CSS. Stick to simple HTML tables with inline styles. This ensures your signature displays consistently across all platforms.

Don't: Include Clickbait or Excessive CTAs

While a call-to-action can be useful, don't overdo it. A single button linking to your calendar, contact form, or key service is appropriate. Multiple CTAs or aggressive marketing language looks spammy.

Don't: Forget About Mobile

Many people read email on phones. Test your signature on mobile devices to ensure text is readable and layout is intact. Avoid wide images or complex layouts that don't scale well to smaller screens.

Industry-Specific Design Tips

Corporate / Finance

Keep it formal and traditional. Use conservative colors (navy, gray, dark blue), professional fonts, and all standard contact information. Include your office address and phone.

Creative / Design

You have more room for personality while staying professional. Use your brand colors boldly, include a professional photo, and maybe add a subtle design element. But still avoid anything too trendy or gimmicky.

Startups / Tech

Modern and clean works well. Use contemporary colors and layout, include social media links, and maybe add a call-to-action button. Keep it innovative but still professional.

Sales / Business Development

Make your signature work-focused. Include all contact methods prominently, add a calendar link for scheduling, and highlight key services. A professional photo can be beneficial here.

Tools and Resources

Use an email signature generator like SignMyEmail to:

  • Preview your signature in real-time
  • Test across different color schemes
  • Automatically generate proper HTML
  • Ensure compatibility with all email clients
  • Save time on manual HTML coding

Final Thoughts

Your email signature is a small but important part of your professional brand. By following these design principles, you'll create a signature that looks great, loads quickly, and makes a positive impression on every recipient.

Remember: simple, professional, and consistent always wins. Test your signature in multiple email clients before finalizing it, and update it periodically as your role or company changes.

← Back to Blog