Getting the subject line wrong is the best way to see your open rate collapse.
Along with the sender name, the subject is the first thing you see when you receive an email. That's why it's decisive: if it fails to interest the recipient in any way, they're very unlikely to open and read the message. Enough to sink your email campaigns or your newsletters…
Fortunately, we've selected 7 email examples with effective subject lines that you should include in your emailing strategy.
1. The deal
Today, we're always on the lookout for good deals and promotions.
The subject above cleverly exploits this by bluntly announcing a discount on the site, while avoiding words that trigger spam filters.
The phrase “You're the boss” adds value to the promotion and creates the feeling of a significant benefit for the customer.
2. Urgency
If discounts and promos are a powerful weapon for your email subject lines, you can make them even more effective by creating a sense of urgency.
This subject conveys, in just seven words, a double message: not only can I get something special (which isn't stated explicitly), but I only have two days to take advantage of it.
Urgency is a powerful lever to encourage the opening of your emails, keep it in mind.
3. The mysterious subject line
If it's interesting to show a concrete benefit in your email subject line, it can also be very effective to play the mystery card.
“We thought it was impossible but…”: this sentence reveals nothing about the message's content but has the merit of being very intriguing and makes you want to know more. Keep in mind that we all enjoy suspense, and that applies as much to a detective movie as to an email.
4. The personalized subject line
If you have a long list of addresses and your email campaign is aimed at thousands of people, you obviously won't send a “handmade” email to each of your contacts.
However, your emails should not be too impersonal either: they should not give the impression of having been sent “en masse” mechanically. It's important to humanize the relationship forming between you and your recipient.
So use the recipient's first name and words like “you” and “your” in your subject line. That personalizes your message and creates a sense of privilege for the recipient, encouraging them to learn more.
However, this approach alone is not enough. To establish a genuine connection, it is essential to implement a comprehensive personalization strategy, which is again part emailing trends 2025Segment your audience to send targeted messages, use dynamic content that adapts to each person's preferences, and automate your sends based on user behavior.
By integrating these elements, your emails will become not only more personalized but also more engaging. This will strengthen the impact of your communication and foster long-term audience loyalty.
Also read: Email marketing: 7 tips to improve your email subject lines
5. The question
A question is an excellent way to engage a recipient because it allows them to easily identify with the topic by linking it to their personal experience. For example, in an email for International Day of Happiness, a broad question like “What makes you happy?” resonates with everyone because happiness is a universal and intimate subject. Adding a touch of personalization by using the recipient's first name gives you a subject line that is both engaging and effective.
6. The novelty
We all have a natural inclination to discover new products or services that can simplify our daily lives. This curiosity drives us to explore what is fresh and innovative. That's why terms like “new,” “discover,” or “update” are particularly effective at capturing recipients' attention.
These words evoke a promise of innovation and novelty, prompting readers to open the email out of curiosity. Whether you're announcing a product launch, a new feature, or an improved service, don't hesitate to include these catchy expressions in your subject line. They will spark interest and encourage engagement, as recipients will feel invited to explore what you have to offer.
7. Emojis
It is also possible to include emojis in an email subject line. When used appropriately and thoughtfully, these symbols can genuinely make your message stand out from others and catch your recipient's attention. A well-chosen emoji adds a touch of color and emotion, making your subject line more eye-catching and engaging. It can also give an indication of the tone of your message, encouraging the reader to open the email. By judiciously integrating emojis, you can amplify the impact of your communication and make your campaign more memorable.
The possibilities for writing your email subject lines are, of course, almost limitless, but these 7 examples should give you good ideas so you no longer miss the mark with your subjects and harm your open rate. Also discover our complete brief to succeed with your email campaigns and our selection of the best tools to send them.
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