That’s why in this article I want to give you 20 ideas for unique subject lines, with examples<\/strong>, so you can write irresistible subject lines for your subscribers, send your email open rates soaring and get them closer to the 100% everyone dreams of<\/p>\n\n\n In email marketing, unique, eye-catching subject lines<\/strong> are essential for capturing the recipient’s attention and increasing your email open rate.<\/p>\n<\/blockquote>\n\n When writing these subject lines, it’s important to think about your audience and what would interest them or catch their eye the most. Testing different approaches and measuring the results can also help you discover which kinds of subject lines work best for your specific campaign.<\/p>\n\n If we look at the statistics, they tell us that email marketing has been skyrocketing<\/strong> in recent years and that open rates for commercial emails have risen by 80% over the last three years.<\/p>\n\n That’s because, on the one hand, subscribers are willing to receive information from the companies they follow; and on the other, the subject lines being used are increasingly well researched<\/strong> to get the desired result: making whoever receives the email feel an irresistible urge to open it<\/strong> and read its content.<\/p>\n\n That’s why it’s so important to create unique subject lines<\/strong>, so that each email has an easier path to conversion: <\/p>\n\n It’s estimated that recipients take about two seconds to read the subject line and decide whether to open the email or send it to the trash.<\/p>\n\n So whatever you write there must be striking, concise, genuine and interesting<\/strong> for the person receiving the email.<\/p>\n\n Another thing to keep in mind is the use of mobile devices. Most of us have email apps on our phones, so the subject line should contain very few words<\/strong> so that it displays properly on phones and doesn’t get cut off halfway.<\/p>\n\n For the same reason, structure what you write so that the most important part appears at the start of the sentence.<\/p>\n\n As you can see, the subject line is as important in email marketing as the title you give your articles, because it’s what makes your readers read it or skip it.<\/p>\n\n Give this the time it deserves, so your email open rates reach levels you never dreamed of before.<\/p>\n\n The best email subject line is short and clear.<\/p>\n\n Try to keep it between 30 and 50 characters, since many email clients cut off longer subject lines.<\/p>\n\n Make sure the subject line gets the main idea of the email across in a concise, easy-to-understand way.<\/p>\n\n Include relevant keywords and numbers in the subject line to capture the recipient’s attention and highlight the content of the email.<\/p>\n\n Numbers can help highlight statistics, promotions or offers, while keywords can sum up the main topic of the email.<\/p>\n\n The best email subject line is personalized and relevant to the recipient.<\/p>\n\n Use the recipient’s name, location or information about their interests to build a personal connection and show that the content of the email matters to them.<\/p>\n\n Grab recipients’ attention by creating urgency or sparking their curiosity.<\/p>\n\n Use words and phrases that convey the idea that the content of the email is valuable, exclusive or available for a limited time.<\/p>\n\n You can also ask questions or pose riddles that encourage the recipient to open the email to find out more.<\/p>\n\n To make sure your email subject line isn’t marked as spam, avoid words and phrases that can trigger spam filters.<\/p>\n\n For example, avoid terms like “free”, “offer” or “discount”, and don’t overuse exclamation marks or question marks.<\/p>\n\n And to help you get there, I’m going to give you some ideas you can adapt to your business’s niche and the content of your emails. Let’s get started.<\/p>\n\n To get the most out of your email subject lines, it’s essential to tailor them to your different audiences and subscriber segments.<\/p>\n\n This ensures your emails are relevant and appealing to each specific group, boosting your open and click rates.<\/p>\n\n Segmentation is essential for personalizing your email marketing campaigns.<\/p>\n\n By dividing your subscribers into groups based on factors such as demographics, interests, behavior and level of engagement, you can create email subject lines that speak directly to their needs and interests.<\/p>\n\n When tailoring your email subject lines to different subscriber segments, keep these tips in mind:<\/p>\n\n When should your email subject lines be original, and when shouldn’t they? We already know the subject line can be the key that opens the door to the inbox. Or not. Originality plays a very important role: among dozens of emails, the one that’s different is the one that stands out. But be careful. If the reader doesn’t recognize your sender, an email that “tries too hard to be clever” may end up deleted straight away, because a very original subject line from a little-known sender breeds distrust. If your sender is well known, you have more room to be original. Just make sure it fits what your audience expects from you: not every audience reacts the same way to strange or surprising subject lines. If in doubt, run an A\/B test with two subject lines and let your data decide.<\/p>\nJose Argudo<\/strong>, CMO at Mailrelay<\/cite><\/blockquote>\n<\/div><\/div>\n\n I’ll try to be as specific as possible when writing these subject lines, but you’ll need to adapt them to the content of your newsletters<\/a>.<\/p>\n\n Writing something generic that has little or nothing to do with the content of the email won’t get you anywhere. <\/p>\n\n That way, your subscriber will open the email, feel let down and never open anything from you again. So, I’ll say it again: adapt the examples I give you to your own content.<\/p>\n\n Personalize them<\/strong>!<\/p>\n\n Test your subject lines with an A\/B test<\/strong><\/p>\n\n\n\n Send two subject lines to part of your list and let Mailrelay send the one with the most opens to the rest.<\/p>\n\n\n\n Happiness, fame, fortune, friends, customers, etc. Starting with a question that also sparks the recipient’s desire is always a good option.<\/p>\n\n One example could be: “Would you like to hire my professional services?”<\/strong> That is, if your newsletter offers your professional services.<\/p>\n\n Don’t give in to the temptation of writing something generic and unachievable (lots of people do).<\/em><\/p>\n\n Something like “Want to be a millionaire? I’ll show you how”<\/strong>.<\/p>\n\n Whenever I get an email with that subject line, I picture the person who wrote it in a run-down hovel, stealing the neighbor’s Wi-Fi on an ancient computer they got from their town’s social services.<\/p>\n\n This creates the urgency to take action so as not to miss out on the opportunity. Either you open the email now or you miss the chance to get valuable information, special offers, discount coupons, etc.<\/p>\n\n The more time you give subscribers to think, the less chance you have of them opening the email.<\/p>\n\n Saying “Today only, until 7 p.m. only” is not the same as “This year only, until December 31 only, this summer only”<\/strong><\/p>\n\n As you can see, if I have until December 31 to take advantage of the offer, I’ll open the email when I have time, if I ever remember to open it at all.<\/p>\n\n But it also happens with phrases that cover a shorter period: “this week only”, “for the next two weeks only”, etc. The more time you give the recipient, the less urgency they’ll feel to open the email, and the less likely they are to open it after a few days, weeks or months\u2026<\/p>\n\n Starting the sentence with a verb that calls for action usually gets the recipient to take action. As long as the rest of the sentence makes an impact.<\/p>\n\n Compare: “Get more customers by boosting your visibility with my professional services”.<\/strong><\/p>\n\n With: “Get to lose your health or even your life by giving me all your money”<\/strong>.<\/p>\n\n Action verbs are very important, as they’re the first word the subscriber will read. But the rest of the sentence still needs to make an impact to get the result we want from that email.<\/p>\n\n Other action verbs: create, share, learn\u2026<\/p>\n\n A good way to convince people to do something is to give them reasons to do it.<\/p>\n\n “Reasons to open this email: you’ll gain more visibility with your customers”<\/strong><\/p>\n\n If you combine this type of subject line with another type, such as numbers, you’ll have an even better chance:<\/p>\n\n “5 reasons to open this email:”<\/strong><\/p>\n\n Our minds subconsciously respond much better to numbers and figures. That’s why starting a subject line with a number gives the reassurance that what follows is true and trustworthy:<\/p>\n\n “5 reasons to trust my professional services\/products”<\/strong><\/p>\n\n “10 benefits of shopping at my online store”<\/strong><\/p>\n\n <\/p>\n\n We trust statistics almost instinctively. So using that to our advantage will always increase our open rate.<\/p>\n\n But even though we instinctively trust statistics, my advice is to cite the reliable source behind the figure, either by saying which company reports it or even by linking to it.<\/p>\n\n Phrases such as: “80% of my customers increase their income<\/em>“, “3 out of 4 visitors to my website become customers<\/em>“<\/p>\n\n Just make sure the statistics are trustworthy and the data has been verified. If it sounds like a lie, you’ll be down one subscriber.<\/p>\n\n Everyone knows that bulk emails to subscribers aren’t personalized for each subscriber, but starting the subject line with the recipient’s name always grabs more attention.<\/p>\n\n Something like: Hi John Doe, I made this for you<\/strong><\/p>\n\n Andrea, I think you’re going to love this<\/strong><\/p>\n\n If your database isn’t very large and it’s perfectly segmented by topics of interest, it’s easy to add the recipients’ names one by one before sending the emails. It’s also very important to keep an eye on your email frequency<\/a>, since sending too often or not often enough can mean failing to connect with your customer.<\/p>\n\n If your database is very large, you’re sure to find an email sending tool that fits your needs and budget and gives you this personalization option.<\/p>\n\n Teaching people how to do something, how to use something, how to get the most out of something\u2026 is always a good option:<\/p>\n\n How to make a living writing about what you love<\/strong><\/p>\n\n How to use our product to get the most out of it<\/strong><\/p>\n\n How to save money by hiring our professional services<\/strong><\/p>\n\n With this formula, the possibilities are endless. It’s almost easier to create a list of these kinds of subject lines first and then write the newsletter to go with them.<\/p>\n\n If you spend a few minutes thinking about what you or your company can offer your customers or potential customers, I’m sure you’ll come up with 10 or 12 How to\u2026<\/strong> subject lines<\/p>\n\n <\/p>\n\n When you’re a company or a professional with a well-established reputation, you can use that fame in your subject lines.<\/p>\n\nWhat Are Unique Subject Lines in Email Marketing?<\/strong><\/h2>\n\n
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8 Key Tips for Writing Unique Subject Lines<\/strong><\/h2>\n\n
1) You Have a Few Seconds to Make an Impact<\/h3>\n\n
2) Think Short and Direct<\/h3>\n\n
3) Take as Much Time as You Need<\/h3>\n\n
4) Brevity and Clarity<\/h3>\n\n
5) Use Keywords and Numbers<\/h3>\n\n
6) Personalization and Relevance<\/h3>\n\n
7) Create Urgency or Curiosity<\/h3>\n\n
8) Avoid Words and Phrases Considered Spam<\/h3>\n\n
![\"unique](\"https:\/\/mailrelay.com\/wp-content\/uploads\/2017\/06\/vender-por-email.png\" "\\"high-impact")
<\/figure>\n\nTailor Your Unique Subject Lines to Different Subscriber Segments<\/h2>\n\n
How Do You Tailor Subject Lines to Each Segment’s Specific Needs and Interests?<\/h3>\n\n
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20 Unique, Eye-Catching Subject Line Examples to Get Your Subscribers to Open Your Newsletters<\/strong><\/h2>\n\n
![\"5](\"https:\/\/mailrelay.com\/wp-content\/uploads\/2026\/10\/formulas-titulos-emails.png\")
<\/figure>\n\n1. “Would you like to get\u2026?”<\/h3>\n\n
2. “Today only\u2026”<\/h3>\n\n
3. “Get\u2026”<\/h3>\n\n
4. “Reasons why\u2026”<\/h3>\n\n
5. “Numbers”<\/h3>\n\n
![\"unique,](\"https:\/\/mailrelay.com\/wp-content\/uploads\/2017\/12\/guia-google-analytics.png\" "\\"statistics\\"")
<\/figure>\n\n6. “Statistics”<\/h3>\n\n
7. “Call the Subscriber by Name”<\/h3>\n\n
8. “How to\u2026?”<\/h3>\n\n
![\"unique](\"https:\/\/mailrelay.com\/wp-content\/uploads\/2017\/10\/beneficios-del-email-marketing.png\" "\\"unique")
<\/figure>\n\n9. Name the Product or Service<\/h3>\n\n