Go to your email inbox right now and scroll through your recent newsletters. Chances are, a significant number of the subject lines contain emojis. A fire icon, a rocket ship, a present box, or a simple smiley face. Why are brands across the globe suddenly loading their corporate copy with colorful icons?
Because it works. According to recent marketing analytics, using emojis in email subject lines can increase open rates by up to 56%, while incorporating them into push notifications can boost click-through rates (CTR) by 85%. Emojis help humanize brands, capture visual attention in crowded feeds, and convey emotions instantly. However, if used incorrectly, they can make a brand look spammy, unprofessional, or outdated. Here are the best practices for using emojis in corporate communication.
1. Know Your Brand and Industry Context
Before inserting a row of smileys into your copy, consider your industry and target demographic.
- Playful Consumer Brands (e.g. food delivery, cosmetics, travel, fashion) can use emojis extensively to build a conversational, casual tone.
- Conservative Professional Services (e.g. medical clinics, B2B enterprise software, investment banking, legal consulting) should use them very sparingly, if at all. A subject line about estate planning or emergency surgery is not the place for a silly emoji.
"An emoji should complement your copy, not act as a substitute. If the message becomes unreadable without the emoji, you have gone too far."
2. Moderation is Key (Avoid Spam Filters)
Adding one or two relevant emojis to a subject line or social media caption adds interest. Adding ten emojis in a row looks like spam. Not only does this look unprofessional to human readers, but email spam filters (like Gmail and Outlook) are trained to flag subject lines with excessive symbols, meaning your newsletter might end up directly in the trash folder.
As a rule of thumb, limit emojis to one per subject line, and no more than three per social media caption, ensuring they are separated by text to maintain readability.
3. Check Meanings and Avoid Double-Entenders
Linguistic meanings shift over time. Make sure your marketing team is fully aware of modern internet slang before selecting icons. For example, the Peach (🍑), Eggplant (🍆), and Water Droplets (💦) have heavily sexual double-entenders online. Using them in a newsletter about summer groceries or plumbing services can lead to major brand embarrassment.
Similarly, double-check how emojis render on different operating systems. A symbol that looks clean and modern on Apple devices might render differently on older Android systems, changing the tone of your message.
4. Placement Matters
Linguists recommend placing emojis at the end of sentences or phrases. Placing an emoji in the middle of a sentence disrupts the reading flow, as the reader's eye is forced to translate a visual card in the middle of text. Emojis should act as "visual punctuation marks"—placed where a period, comma, or exclamation mark would naturally go.
Case Study: Domino's Tweet-to-Order
One of the most successful emoji marketing campaigns was launched by Domino's Pizza. They developed a system where registered users could link their profiles to Twitter and order their favorite pizza simply by tweeting a Pizza slice (🍕) emoji to the Domino's account. The campaign went viral, won advertising awards, and proved that emojis could streamline transactions, moving beyond simple accents to functional utilities.
Conclusion
When used strategically, emojis are a powerful tool to humanize your brand voice, boost open rates, and engage your customers. By following these best practices—matching your industry context, maintaining moderation, checking meanings, and placing icons correctly—you can ensure your campaigns look modern, professional, and impactful.