Naimh is a seasoned marketer of 12 years, including in SaaS and tech. She’s an expert at simplifying complex technology concepts, bridging the gap between IT and marketing. Naimh specializes in turning tech speak into actionable insights, helping marketers get the most out of their tools and technology.
The top 15 email banner examples
TL;DR
An email signature banner is a clickable image below the contact details, used to promote a specific campaign or announcement.
A good banner idea only works if it stays current everywhere it's sent. One still promoting a sale that ended in December, or one three teams are running an outdated version of, does more brand damage than no banner at all.
Banner size and format vary by email client: Outlook and Gmail hold up to 600 pixels wide, mobile needs 320 to 450.
Marketing can own the creative and design while IT keeps oversight of what's live, without marketing needing to file a ticket to publish.
Every organization spends money getting the word out through marketing and PR. An email signature banner puts that same message somewhere it's guaranteed to be seen: underneath the sign-off of every email your people already send. Positioned below the contact details and above any disclaimer, it turns routine email into a small, repeatable placement for whatever you're promoting this month.
If you're new to using email signature banners, our Email Signatures for Dummies guide provides actionable best practices you can use.
What is an email signature banner?
An email signature banner is a strip of graphical detail often placed below the contact details. It’s used to showcase new content such as white papers, highlighting special offers or attendance at trade shows.
Done well, it also does double duty for brand recognition, since recipients see it every time they get an email from your company.
"A banner is only as good as who sees it. The wrong banner on the wrong send, a promotion on a support reply, does more damage to trust than a stale one ever does. That's the part teams don't think about until it's already gone out."
Why is it important to use an email banner?
The use of an email banner adds a visual element to your email signature, making it more eye-catching and engaging for the recipient. The benefits of using email banner include:
1. Increasing brand visibility
Including a visually appealing email banner in your signature increases the chances of your brand being noticed and remembered by recipients.
2. Promoting new content
Email banners are a great way to showcase new products, services, or marketing messages to your audience. It allows for easy promotion without having to send out separate emails or newsletters.
3. Driving traffic to your website
By including links in your email banner, you can direct recipients to visit your website and engage with more of your content.
4. Improving professionalism
A well-designed email banner adds a level of professionalism and credibility to your emails, making a positive impression on potential customers or clients.
5. Advertising special offers or promotions
Email banners can also be used to promote special offers, discounts, or sales to your audience. This can help increase conversions and drive more business.
6. Using a cost-effective form of advertising
Compared to traditional forms of advertising such as TV, radio, or print ads, email banners are a much more cost-effective option for reaching a large audience. This makes it a great tool for small businesses or startups with limited budgets.
“Your signature appears on a message that's delivering a valuable payload... you can guarantee at least one impression with each signature sent.”
Source: Email Signatures for Dummies®
Why banners lose their effectiveness
None of that holds if the banner itself is wrong. There are two obvious ways for one to go wrong. It goes stale, still advertising an event that happened in March or a sale that ended before Christmas. Or it goes inconsistent, because one team updated theirs last week and another team is three versions behind. Either one looks worse than having no banner at all, because it tells the recipient nobody's minding the details.
This is a smaller version of a problem every growing company runs into eventually: a good asset, applied by 200 people with no shared source of truth, stops being one asset and becomes 200 slightly different ones. Keeping a single banner current and identical everywhere it appears is what actually makes any of the ideas below worth doing.
"Before a platform handles this, keeping banners current means one person emailing the whole company asking everyone to update their own signature, then chasing the half who didn't. That's not a design problem. That's a process nobody signed up to own."
15 email signature banner examples
The email signature examples presented below use promotional banners to give these organizations' marketing activities a valued boost. Read on to discover some of the best email signature banner examples.
1. Product promotion
This type highlights one specific product or service, with an image built to sell it and a single call-to-action button. It works because it asks for exactly one thing.
2. Seasonal fun
A banner that leans into the calendar, a holiday, a season, a one-off event, gives a routine email a reason to feel current. Christmas email signatures are the most common version, but the same idea works for back-to-school, tax season, or a company anniversary. It's also the example most exposed to the staleness problem above: a Christmas banner still running in February looks worse than no banner at all, so it's worth a calendar reminder to take down, not a set-and-forget.
3. Recruitment purposes
Email signatures can also be used as a way to promote job openings within an organization. An email banner with the words "Join our team!" or "Now hiring" can attract potential candidates and encourage them to click on the banner for more information. It's a low-cost way to put open roles in front of people who already trust your brand enough to be corresponding with it.
4. Booking appointments
This email signature template goes straight to scheduling. A medical practice, a salon, or any service business can use this to turn an ordinary reply into a booked appointment, without the recipient having to ask.
5. Event management
An email banner promoting a conference or trade show appearance reaches people who are already engaged enough with your business to be in an email thread with it, which makes them a better audience than a cold list.
6. New product or app launch
Announcing a launch in the email signature means every employee, not just marketing, becomes part of the rollout. That only lands well if it goes out to everyone on the same day. A launch banner that half the company is already running a week early, because one person updated their own email signature ahead of the rest, undercuts the announcement it's supposed to support.
7. Award wins or recognition
An email banner added to a signature can highlight any recent awards or recognition received by the company. This not only showcases the company's achievements but also promotes trust and credibility among recipients.
8. Charity initiatives
Promoting a cause your company supports does two things at once: it raises awareness for the cause and shows recipients what the company stands for, which matters more to some of them than any product claim would.
9. Company news or updates
Funding news or a leadership change, kept in the email signature, keeps external contacts current without a separate announcement email landing in their inbox. A leadership change is the clearest case for getting this right everywhere at once: a departed executive's name still showing up in signatures across the business reads as nobody updated the record, not as a missed banner.
10. Asking for customer reviews
Use email signature banners to prompt customers or clients to share reviews and feedback. A banner that asks directly for a review, with a star rating or a logo for visual weight, turns every outgoing email into a small nudge toward more social proof.
11. Highlighting testimonials
Similar to asking for reviews, email banners can also be used to showcase positive testimonials from satisfied customers. A strong testimonial, seen repeatedly, does real work on a recipient who's still deciding whether to trust you.
12. Special offers and promotions
Take advantage of email signature banners to promote special deals, discounts, or promotions. The format works particularly well for anything with a deadline, since the whole point is to be seen before it expires, which loops back to why keeping it current matters so much.
13. Sharing educational resources
A white paper, guide, or webinar recording promoted in the email signature reaches people already receiving value from your emails, and positions the company as worth learning from rather than just buying from.
14. Scheduling demos or consultations
For any business selling a service, an email banner that links straight to a booking page shortens the distance between "read this email" and "talked to someone." Every reply becomes a chance to move a prospect one step further.
15. Offering an incentive
Email banners can play an important role in the sales process. This specific design offers an incentive for individuals during an initial sales call. Incorporating email banners in the sales journey is a great way to boost engagement and conversions.
Make your email signature banner size work
There's no single banner size that looks right on every device, because desktop clients and mobile mail apps render images differently. The table below covers the ranges that hold up across the clients people actually use.
Client / device | Recommended banner width | Notes |
|---|---|---|
Outlook desktop and Outlook on the web | Up to 600 pixels | The widest a banner can go before it risks being cropped or forcing a horizontal scroll |
Gmail (desktop) | Up to 600 pixels | Consistent with Outlook; Gmail clips wider images without warning |
Mobile mail apps (iOS Mail and the Gmail and Outlook mobile apps) | 320 to 450 pixels | Narrower screens mean a desktop-width banner either shrinks illegibly or gets cut off |
Format matters alongside sizing:
PNG and JPEG are supported everywhere. GIFs work, but some mail clients only show the first frame, so don't rely on animation to carry the message.
SVGs aren't supported in email signatures at all, even though they're standard on websites.
Without email signature management software, resizing has to be done by hand in an image editor every time the banner changes, which is easy to get wrong and slow to fix once it's live.
Marketing owns the creative, IT keeps the oversight
None of the ideas above are hard to design. The harder problem is making sure the right version reaches everyone and stays current, without marketing needing to file an IT ticket every time it wants to swap one out.
That's the split Exclaimer is built for. Marketing designs and schedules banners and targets them by team, sender, or region, without touching code. IT keeps visibility into what's live and who's allowed to publish, without building or approving each banner by hand. Click tracking runs underneath both, so a banner idea comes with real engagement numbers, not a guess.
Learn more about running email signature marketing campaigns with Exclaimer.
