Email Signature Best Practices

1. Optimize your copy
2. Focus on design
3. Add a call to action
4. Include banners
5. Make your signature mobile friendly
6. Email signature management best practices

It’s hard to think that an act as deceptively simple as signing your name can have such lofty implications. But it’s true—historically the signature has represented a binding contract. Monarchs have used it on royal decrees; revolutionaries have codified declarations of independence with it. And even in today’s digital age, people still take the time to sign off on an electronic correspondence with their name.

So what does your email signature say about your company and brand? Because this valediction represents so much more than the sum of its parts, you need to treat it with as much care as you would any other email marketing strategy. With that in mind, here are some email signature best practices for 2025.

Optimize your copy

This is a fancy way of saying you should ensure that you’re emphasizing the most important information. This can be done using an information hierarchy pyramid. In this pyramid, you compose your signature by presenting the most crucial information first and working your way down.

Oftentimes this follows a fairly straightforward formula: name > title > address > phone number > email > website > social media accounts. By presenting your contact info this way you ensure that your reader naturally processes the most important info first. An added tip is to turn your address info into a Google Maps link so readers don’t have to leave the email to find your office location.

Focus on design

Just because you have limited space to work with doesn’t mean you shouldn’t take advantage of design opportunities. Adding an eye-catching logo or CTA (more on this below) in your information pyramid is highly recommended. Symmetry is also crucial, so make sure your text is aligned properly to the left of the screen. You can even utilize dividers and negative space (whitespace) to separate text, make it less crowded and more pleasing to the eye. Here are some examples of signatures that make good use of space and dividers.

Always remember, when it comes to design in an email signature: less is more. You don’t want your signature to be longer than seven lines, and you don’t want to clutter it with visual noise. That’s why one logo and one headshot is sufficient—adding a bunch of other graphics is just going to muddle the overall message.

Another tip includes limiting your text and images to two colors (more than that and you risk distracting the reader). Also, avoid using fancy fonts and go for something that is clean, elegant, and simple. When in doubt about which fonts to use, err on the side of caution and go with a Web Safe font. Mix and match them according to the style you feel is best.

Keep your sig clean, neat, and simple. Take into account your corporate colors and fonts while making an email footer.

• Stick to two or three colors in your signature palette.

If you use more than that, you risk distracting the reader.

• Choose one email signature font. Don't use too many fancy fonts.

Instead, go for something clean, elegant, and simple. If your organization has a particular font style for marketing materials, consider using it in your email footer to keep everything consistent. 

Add a call to action

If you don’t have a logo to include, you should consider adding a CTA at the top of your signature. If you’re a tech company that is marketing a new CRM tool and you’re offering the first month free, then let your readers know with a nice clean button above your name. It saves them the time of having to manually leave the page and visit a site, and it gets the word out about your brand in the process.

 The calls to action range from offers to subscribe to your YouTube channel to links that send recipients to your recent blog post. 

• Add a link to your calendar

By doing so, you will help your co-workers, partners, and customers grab time on your calendar without the need to set up a meeting by email or phone.

• Ask for review

Add links to your review sites, and your customers will see them every time they talk to you via email.

• Add a link to download reports/case studies

When you talk to potential clients, it's always wise to share reports, case studies, and success stories.

• Links to your marketplace

An email signature can also serve as an excellent way to market your business through email. And if you sell something on Amazon, eBay, Etsy why not mention this in your sig?

• Subscribe to your channel

Encourage your email recipients to subscribe to your channel on social media by adding a CTA right in your email signature.

But perhaps you’re currently engaged in marketing best practices like email segmentation and personalization. Maybe you’re worried that this is at odds with adding a CTA. The good news is that it’s not a one-size-fits-all proposition. You can customize CTAs according to your email personalization strategy the same as you customize your emails.

Include banners

One surefire way to show off your industry expertise, increase conversions and enhance your promotion is to include banners. You can insert a number of things in a banner, such as a link to your company blog, an upcoming webinar, or other events:

• Recent blog post
• Upcoming webinar
• Special offers
• Free access to your tools
• Invite people to meet at the conference
• Discounts
• Listen to your podcast

Banners increase brand awareness and allow you to reinforce your expertise by incorporating certificates of commendations your company has earned:

• Awards and certificates

If your company has ever received any certificates or awards, a perfect place to show them off is the bottom of every email message you send to partners, clients, and prospects.

• Announcements

Your email footer is also a great place for making time-sensitive announcements like trade show appearances, special holiday hours, the launch of new products or services.

• Customer reviews

Would you like to display customer satisfaction ratings and reviews in your emails too? Put links to customer reviews into your email signature and get them noticed.

You can also raise awareness by adding banners that feature new product announcements and social-media feeds (a banner featuring your latest tweet is always great in an email signature). You can use them to promote any videos you have on YouTube, and you can even add a quick survey asking the reader if the email has been helpful. This can be valuable data for your customer service and sales departments.

The size of your banner depends on your audience. The industry standard for desktop computers is 600 pixels wide. However, You’ll likely want to opt for a 320px-size banner, as that is the standard for smartphone screens.

Make your signature mobile friendly

2016 was the first year that mobile internet searches surpassed desktop. Since then, the trend only continues to skew towards mobile internet usage. So not only should your email templates be mobile friendly, but your signatures should be too. Anything in your signature, including promotions and banners, need to be responsive as well.

As mentioned above, you need to take into consideration the width of the smartphone screen while also separating your text into multiple lines to ensure it fits on the page. Keep in mind, most email clients don’t offer truly responsive HTML signatures. That means your sig won’t be configured automatically to the screen size of the recipient in question. However, there are some signatures that are fully responsive, and you can find a list of them here.

Email signature management best practices

As we’ve already established, an email signature is your digital business card and a simple way to connect with customers. Yet many companies still overlook consistent, up-to-date signatures across their teams. For professionals in finance, such as CFOs and accountants, a polished signature also helps build credibility and trust. So, turn your employees into brand ambassadors by following these simple rules:

1. Create a standardized email signature template

Keep employee email signatures uniform and consistent across the company.

• Use a logo

Adding your company logo helps strengthen brand recognition every time someone receives an email from your team.

• Stick to your brand colors

Use colors that match your brand identity, but avoid using more than two colors in the signature.

• Standardize contact information

A corporate email signature should include the employee’s name, title, and contact details. You can still customize signatures slightly depending on the employee’s role or department. For example, sales teams may need more detailed signatures than IT staff.

2. Use simplified signatures for internal communication

When sending emails to your co-workers, you don’t necessarily need as much information in your footer as you would for external contacts. It should be a more compact version as you don’t need to include details such as a legal disclaimer, marketing banners, or social media buttons. Including a logo, name, job title, telephone extension, or direct dial would be enough.              

3. Use simplified signatures for replies and forwards

Consider simplifying your email footer for replies and forwards. It will help you avoid overloading your conversation threads.

4. Add different CTAs and banners for different departments

Make specific email footers for different departments within your company. For instance, your salespeople's signatures can contain a banner with a "Schedule a demo" button.. And signatures for your marketing department can promote recent content and increase sign-ups.

5. Share a link to the predefined signature template in your email signature generator

Find a service that will allow you to centrally manage and deploy corporate signatures for any scope of mailboxes in your organization.

Conclusion

These are some tactics to implement in 2025 to ensure your custom email signature is keeping up with the times. There are other, evergreen best practices too. For example, if you’re an independent contractor your signatures can be more casual in tone and style. If you’re designing a corporate email sig, you need to ensure that it maintains continuity and professionalism throughout every department. Establish standards and adhere to them no matter what email campaign you’re embarking on.