The Ultimate Guide on How To Write High Open Rate Subject Lines – [Over 130 Examples!]

Are you looking for ways to write email subject lines that actually work? If yes, you came to the right place, because in this Ultimate Guide you will learn the best strategies and things you need to avoid to write kickass high open rate subject lines. 

PLUS as a BONUS we’ll also share over 130 examples of the best subject lines that you can implement into your email marketing strategy to skyrocket your open rates!

So here we go!

What Is an Email Subject and Why Is it So Important?

The email subject line is the first thing people see when they get an email, right after the sender’s name. It’s like a sneak peek of what’s inside the email. Basically, it’s a short summary that tells you what the email is about. 

The whole point of the subject line is to grab people’s attention and make them want to open and read your email. So, it’s extremely important to get your subject line right!

Here’s and example:

Email subject line
The ultimate guide on how to write high open rate subject lines - [over 130 examples! ] 6

The top subject lines for emails are always the ones that really catch people’s eye, offer something valuable, and make them want to open the email.

Most of the time, it’s the subject line that decides if someone is going to open your email or just pass it by.

That is the MAIN reason why good subject lines are so important!

Almost half of email recipients decide to open an email based ONLY on the subject line. However, nearly 70% are quick to label emails as spam if the subject line doesn’t appeal to them. 

This underscores the significance of crafting compelling subject lines for your email marketing efforts.

Good subject lines will definitely boost open rates, leading to higher click-through rates and conversions. 

“Content marketing is more than just creating content. It’s about stories, emotions, experiences, and connections.” – Seth Godin1

But their importance extends beyond just getting your email opened:

Capturing Attention: Subject lines are the initial point of contact with recipients, making them crucial for grabbing attention and enticing people to open the email.

Setting Expectations: A well-crafted subject line gives recipients an idea of what to expect inside the email, setting clear expectations about the content.

Avoiding Spam Filters: Certain words or phrases can trigger spam filters, causing emails to be marked as spam or even go undelivered. Crafting subject lines carefully helps ensure deliverability.

Improving Open Rates: Engaging subject lines significantly increases the chances of recipients opening the email, a vital metric for the success of email marketing campaigns.

Encouraging Engagement: Compelling subject lines not only prompt recipients to open the email but also encourage them to engage further by reading, clicking on links, or taking desired actions.

Remember, the subject line serves as the first impression of your email, so make it count.

How to Write Great Subject Lines That Make People Open Your Emails

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The ultimate guide on how to write high open rate subject lines - [over 130 examples! ] 7

Crafting great email subject lines requires a mix of creativity, clarity, and relevance. Your goal is to reach the right audience with messages and offers that resonate with them, motivating them to take action and interact with your email.

“People scan subject lines first. Make yours stand out.” – Copyblogger 2

Draw Focus to Your Inbox

Ensure that your key information is attention-grabbing. Your email’s subject line should make someone want to read it all the way through. Keep the subject line short, it shouldn’t be too long. Using elements like surprise, curiosity, and even emojis can help in achieving this.

Focus on Who You Are Speaking To

If your email is tailored for a particular city or group of individuals, ensure it reaches only those intended recipients. 

Your subject line should mirror this specificity. Use email segmentation to categorize your audience into distinct lists. 

This way, you can send targeted messages to each group without concerns about relevance.

Sell Straight Forward

Use this strategy carefully. While a hard sell approach in a subject line may not always be appropriate, it can make sense in certain scenarios, such as referencing a particular product. Your subject line can effectively entice recipients to make a purchase.

Use Emojis

Studies indicate that emails featuring emojis in the subject line boast a 56% higher open rate compared to those with text only subject lines. 

So feel free to experiment with emojis (while keeping them aligned with your brand and not overdoing it) to potentially boost engagement.

Use Announcements (even with those who aren’t openers)

When sending out announcement emails, prioritize placing the most crucial information in your subject line. This ensures that even if recipients don’t open the email, they still grasp the key details. 

While they may not be interested in your offer immediately, they could potentially be in the future, and a memorable subject line might prompt them to revisit your email.

Write Like a Real Human

People appreciate a human touch, even in emails sent through marketing automation tools. Adding a bit of humanity into your emails can go a long way in connecting with your audience. 

Try adopting a conversational tone to appear friendly and approachable. Write your emails as if you’re chatting with a close colleague, keeping the tone warm and personable.

“People you build relationships with are more likely to open and read your emails.” -Neil Patel3

Ask Questions

Engaging your audience can be as simple as asking a question instead of making a statement. By posing a question in your subject line, you invite recipients to join the conversation and spark their curiosity about what awaits them in the email. 

For example, consider asking questions like “Are you addressing X issue?” or “Are you going to let your 50% coupon go to waste?” to pique their interest and encourage them to open your email.

Avoid Spam Words in Your Email Subject

Subject lines that come off as overly pushy or sales oriented tend to land in the spam folder more often than not. Avoid using loud punctuation such as ALL CAPS or multiple exclamation points, as well as overtly promotional language like “Buy now” or “Free.” These tactics can trigger spam filters and decrease your email deliverability.

Instead of solely promoting your products or services, consider offering valuable insights or helpful information to your audience. Focus on showcasing your expertise and providing content that your recipients will find genuinely useful and relevant. This approach not only improves your email deliverability but also enhances your reputation as a trusted source of information.

Include a deadline in the subject line

In a world filled with distractions, capturing your reader’s attention is not easy at all. One effective strategy to cut through the noise is to create a sense of urgency using deadlines.

For promotional events or special offers, consider implementing a series of emails to maximize engagement. Start with an initial announcement to inform your audience about the upcoming event or offer. As the deadline draws near, send follow-up emails reminding users of the limited time remaining to take advantage of the promotion.

Don’t hesitate to set short turnaround times, even as brief as 24 hours. Phrases like “Now or never” can be particularly effective in driving action and motivating recipients to act swiftly. By leveraging deadlines in your email marketing strategy, you can compel readers to prioritize your message and increase the likelihood of conversion.

Include Value In Your Subject Line

You’re probably aware that providing value to your audience is key to a successful content marketing strategy.

Consider the current needs of your subscribers and hint at a solution right in your subject line. This strategy sparks curiosity and encourages recipients to open your email to find answers.

Try Humorous Subject Lines (Make Them Laugh)

Most people aren’t cracking up while scrolling through their inbox. So, if you can sprinkle in a bit of humor with your subject line, it’s very likely that you’re going to stand out.

You might not have them rolling on the floor laughing, (ROFL! 😀) but a well placed joke could at least bring a smile to their face and make them click open.

Consider experimenting with jokes or clever wordplay, depending on the vibe your business is aiming for. It’s a playful way to boost engagement with your audience.

Funny Email Subject Examples:

  • “Shocking News: This Email is Mildly Interesting.”
  • “Don’t open this email… Just kidding, you totally should!”
  • “Oops, We Found Your Secret Dancing Video!”
  • “Puppies, Kittens, and Pizza. Need we say more?”
  • “Free Pizza: The Dream is Real!”
  • “Aliens Invaded Our Office. Here’s Proof!”
  • “Your Boss Approved Extra Nap Time!”

Say Something Fascinating or Unexpected

If humor isn’t your style, how about going for surprise? Share an intriguing fact about your industry, a surprising statistic, or something your audience wouldn’t expect to see in a sales email.

Offering something unexpected can pique your subscribers’ curiosity and increase the likelihood that they’ll open your email.

Email Subject Line Best Practices

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The ultimate guide on how to write high open rate subject lines - [over 130 examples! ] 8

When you are crafting and testing your email subject lines, it’s crucial to follow certain best practices to boost the chances of your audience opening your email.

Here are some essential subject line best practices you should incorporate into your email marketing strategy to boost open rates:

#1 Grab Their Attention

Your email subject line is like a mini ad for what’s inside your email. To make your email stand out in a crowded inbox, you need to catch your audience’s attention right away. 

You can do this by using catchy phrases, personalizing the subject line with the recipient’s name, and adding emojis to make your business stand out from the crowd.

#2 Express Importance

Your email subject lines should provide relevant information to the recipient and give them an idea of what content awaits them inside the email. 

If your email focuses on promoting products, the subject lines should highlight the value or relevance of the products, such as the benefits of a deluxe hair dryer or a summer sale on cargo shorts.

#3 Make Them Curious

Email subject lines should spark curiosity in your audience. As mentioned earlier, the goal is to capture their attention, but you also want to make them curious. S

Since email subject lines are brief, the aim is to provide a teaser that entices the reader to invest their time in exploring further.

“When it comes to email marketing, the best subject lines tell what’s inside, and the worst subject lines sell what’s inside.” -MailChimp4

#4 Be Clear About The Desired Action

Consider the primary objective and call to action of your email campaign. What action do you want your audience to take after reading your content? Do you want them to make a purchase? Sign up for an event? 

Ensure that your subject line clearly communicates the intended action of your business.

#5 Personalize Your Subject Lines

People tend to respond positively to personalized communication, and they’re more likely to pay attention when they see something familiar, such as their own name, in their inbox. 

Utilize dynamic fields to automatically insert the recipient’s name into your subject lines for a more personalized touch.

#6 Make Your Subject Short and Engaging

It’s essential to keep your subject line concise to prevent it from being cut off in the inbox. Your subject line should effectively convey urgency, excitement, intrigue, a sense of welcome, or whatever the goal of your email message is using just a few words.

#7 Get Them Familiar With the Sender Name

Just as people tend to pause when they see their own name, they’re also more likely to open emails from a sender name they recognize. 

Choosing a sender name that’s consistently associated with your business helps to build trust with your audience, making them more inclined to open your emails.

#8 Create a Sense Of Urgency

Create a sense of urgency in your subject line to grab your audience’s attention and prompt them to open your email without delay. Craft an exclusive tone in your subject line to evoke feelings of uniqueness and special treatment.

#9 Split Test Your Subject Lines (A/B Testing)

To understand what resonates best with your audience, try A/B testing your subject lines. Create two variations, such as one emphasizing urgency (Subject Line A) and the other focusing on exclusivity (Subject Line B). 

Send each version to a small subset of your audience (around 10-20% of your total audience for each group). Set a timeframe, then analyze the results after the test period ends. 

The subject line with the highest open rate will guide your decision on which version to use for the remaining audience.

#10 Don’t Forget To Tweak

When brainstorming email marketing ideas for your business, keep in mind that it’s a long-term strategy. In addition to A/B testing subject lines, be open to experimenting with new styles to discover what resonates best and what can be enhanced.

Common Email Subject Line Mistakes You Need to Avoid

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To maximize your email opens, it’s crucial to avoid some of the most common subject line mistakes. So let’s talk about those mistakes.

#1 Writing Generic Subject Lines

Your customers want authenticity, not generic emails that seem like they could be sent to anyone. When customers opt-in to your emails, you gain valuable data about their age, gender, location, interests, profession, and their name.

Leverage this information to create subject lines that truly connect with your audience and spark their curiosity, leading to more opens and click-throughs. Avoid sending generic subject lines that are destined for the junk or spam folder.

#2 Misleading Information

Customers already deal with email overload, so using a deceptive subject line will likely lead to your email being deleted or reported as spam. It’s crucial that your subject lines clearly communicate what customers can expect from your email.

Avoid tactics like using “RE:” without prior contact or employing fear-based language such as “your account status” or “you missed it,” as these can raise red flags for recipients.

#3 Overusing Emojis and Symbols

Emojis can indeed boost email open rates, but their effectiveness depends on your brand’s image and audience preferences. While they can add a playful touch to your subject lines, they may not align with more conservative brands or professional services.

Keep in mind that emojis may appear differently on various devices and platforms, potentially leading to confusion or misinterpretation among recipients.

Ultimately, the decision to use emojis should be based on your brand’s tone, audience demographics, and previous engagement data. If they resonate with your audience and complement your brand identity, they can be a valuable addition to your email marketing strategy.

#4 Long Subject Lines

Business professionals receive an overwhelming number of emails every single day, averaging around 122 messages. With such a huge amount of content, brevity is key when crafting subject lines.

Short and concise subject lines not only capture attention but also drive better results. Research shows that subject lines with 6-10 words yield the highest open rates, while longer ones tend to see a drop in engagement.

Therefore, it’s essential to keep your subject lines succinct, reserving detailed information for the email body. Instead, use the subject line to spark curiosity, convey urgency, or employ other strategies to boost open rates effectively.

#5 Not Optimizing For Mobile

With approximately 81% of people regularly using their smartphones to check emails, it’s crucial to optimize your emails, including subject lines, for mobile users. 

Before sending, ensure that your subject line displays correctly on mobile devices by previewing your email across all channels.

Random characters, numbers, or code in the subject line can render it unrecognizable on mobile devices, leading to disastrous results for your email campaign. Previewing ensures that your subject line remains clear and coherent, maximizing its impact on mobile users.

#6 One Word Subject Lines

While keeping your subject line concise is essential, condensing it to just one word may be too extreme.

Most recipients won’t be compelled to open an email with a subject line like “Important” because it lacks specificity. Similarly, “Survey” or “Hi” doesn’t provide enough incentive for them to engage with your email.

One word subject lines can come across as lazy, unprofessional, and even spammy. Instead, using a few more words allows you to be more creative and resonate with the recipient’s needs, increasing the likelihood of them opening your email.

130+ TOP Subject Line Examples (With Explanation)

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The ultimate guide on how to write high open rate subject lines - [over 130 examples! ] 10

Alright so now as we promised, let’s take a look at 130+ examples of the best working subject lines that you can implement into your email marketing strategy, and also talk about why they are working.

FOMO Subject Lines

Harnessing the fear of missing out (FOMO) can be a powerful tactic in crafting compelling email subject lines. By incorporating elements of scarcity or urgency, you can evoke a sense of urgency and entice recipients to open your emails promptly.

Subject lines featuring words like “urgent,” “breaking,” “important,” or “alert” are known to boost email open rates by creating a sense of time sensitivity.

Here are some effective sample subject lines that leverage the fear of missing out:

  1. Warby Parker: “Uh-oh, your prescription is expiring”
  2. JetBlue: “You’re missing out on points.”
  3. Digital Marketer: “[URGENT] You’ve got ONE DAY to watch this…”
  4. Digital Marketer: “Your 7-figure plan goes bye-bye at midnight…”
  5. Digital Marketer: “[WEEKEND ONLY] Get this NOW before it’s gone…”
  6. Jersey Mike’s Subs: “Mary, Earn double points today only”
  7. Guess: “Tonight only: A denim lover’s dream”

Curiosity Subject Lines

Humans naturally seek closure. We prefer having all the pieces of the puzzle rather than leaving gaps in our knowledge. 

You can use this inclination to your advantage by crafting subject lines that leave subscribers intrigued, like a cliffhanger that can only be resolved by opening the email.

To pique curiosity, consider asking a question, offering something intriguing, or stating something unconventional.

Here are a few examples of subject lines designed to spark curiosity:

  1. Manicube: “*Don’t Open This Email*”
  2. GrubHub: “Last Day To See What This Mystery Email Is All About”
  3. Refinery29: “10 bizarre money habits making Millennials richer”
  4. Digital Marketer: “Check out my new “man cave” [PICS]”
  5. Digital Marketer: “Is this the hottest career in marketing?”
  6. Thrillist: “What They Eat In Prison”
  7. Eat This Not That: “9 Disgusting Facts about Thanksgiving”
  8. Chubbies: “Hologram Shorts?!”
  9. The Hustle: “A faster donkey”
  10. Mary Fernandez: “? a surprise gift for you! {unwrap}”

Funny Subject Lines

If your subject line brings a smile to your subscribers’ faces, they’re bound to open it. After all, who can resist clicking on something that promises a good laugh?

Injecting humor into your subject lines takes a bit more effort and creativity, but the payoff can be worth it in terms of higher open rates.

Here are some amusing email subject lines guaranteed to bring a chuckle:

  1. Eater Boston: “Where to Drink Beer Right Now” (Sent at 6:45am on a Wednesday.)
  2. OpenTable: “Licking your phone never tasted so good”
  3. Groupon: “Deals That Make Us Proud (Unlike Our Nephew, Steve)”
  4. The Muse: “We Like Being Used”
  5. Warby Parker: “Pairs nicely with spreadsheets”
  6. UncommonGoods: “As You Wish” (A reference to the movie The Princess Bride.)
  7. Travelocity: “Need a day at the beach? Just scratch n’ sniff your way to paradise…”
  8. TicTail: “Boom shakalak! Let’s get started.”
  9. Thrillist: “Try To Avoid These 27 People On New Year’s Eve”
  10. Baby Bump: “Yes, I’m Pregnant. You Can Stop Staring At My Belly Now.”
  11. Gozengo: “NEW! Vacation on Mars”
  12. The Hustle: “Look what you did, you little jerk…” (This one’s a reference to the movie Home Alone. We hope.)

Vanity Appealing Subject Lines

Everyone likes a little ego boost now and then. We all enjoy feeling appreciated and admired by others, it’s just normal human nature.

That’s why some of the smartest subject lines play into our vanity to entice us to open the email. They either promise something that will enhance the subscriber’s image in the eyes of their peers or tap into the fear of being left out.

Here are some clever email subject lines that play on vanity:

  1. Guess: “Don’t wear last year’s styles.”
  2. Fabletics: “Your Butt Will Look Great in These Workout Pants”
  3. Jeremy Gitomer: “How Have You Progressed Since the Third Grade?”
  4. Rapha: “Gift inspiration for the discerning cyclist”
  5. La Mer: “Age-defying beauty tricks”
  6. Pop Physique: “Get Ready. Keep the Pie Off Your Thighs Returns.”
  7. Rapha: “As worn in the World Tour”
  8. Sephora: “Products the celebs are wearing”

Greedy Subject Lines

You might not consider yourself a “greedy” person, but let’s face it, everyone loves a good deal, even if they don’t necessarily need the item at that moment. That’s why sales, discounts, and special offers are so effective in email subject lines.

However, be cautious about offering huge discounts; the higher the percentage, the less believable it may seem to consumers (perhaps because they doubt the deal’s authenticity).

Nevertheless, you can usually count on an uptick in click-through rates whenever you include a discount in your subject line. That’s because the people who open these emails are intrigued by your offer and are more likely to take action.

Here are some enticing email subject line ideas to appeal to your subscribers’ desire for a good deal:

  1. Topshop: “Meet your new jeans”
  2. Topshop: “Get a head start on summer”
  3. HP: “Flash. Sale. Alert.”
  4. HP: “New must-haves for your office”
  5. Seafolly: “A new product you won’t pass on”
  6. Guess: “25% off your favorites”
  7. Rip Curl: “Two for two”
  8. La Mer: “A little luxury at a great price”
  9. Rapha: “Complimentary gift wrap on all purchases”
  10. The Black Tux: “Get priority access.”

Catchy Subject Lines

Catchy email subject lines are like magnets—they draw readers in and get them excited to open your email.

There are endless ways to grab your readers’ attention. You can be bold, confident, or simply strike up a conversation to make your subject line stand out.

Offering a shortcut or a helpful resource can also pique interest by providing readers with an easier way to achieve their goals, saving them time and effort.

Here are some examples of catchy email subject lines that are sure to capture your readers’ attention:

  1. Syed from OptinMonster: “✔ 63-Point Checklist for Creating the Ultimate Optin Form”
  2. Syed from OptinMonster: “Grow your email list 10X ⚡ faster with these 30 content upgrade ideas”
  3. Ramit Sethi: “How to email a busy person (including a word-for-word script)”
  4. Digital Marketer: “Steal these email templates…”
  5. Digital Marketer: “A Native Ad in 60 Minutes or Less”
  6. Digital Marketer: “212 blog post ideas“

Pain Points in Subject Lines

If you know your audience well, you’re aware of their major pain points. Utilize these pain points to entice subscribers to open your emails by addressing and solving their problems.

Here are a few examples of email subject lines that highlight subscribers’ pain points and provide a solution:

  1. Pizza Hut: “Feed your guests without breaking the bank”
  2. IKEA: “Where do all these toys go?”
  3. IKEA: “Get more kitchen space with these easy fixes”
  4. HP: “Stop wasting money on ink”
  5. Sephora: “Your beauty issues, solved”
  6. Uber: “Since we can’t all win the lottery…”
  7. Thrillist: “How to Survive Your Next Overnight Flight”
  8. Guess: “Wanted: Cute and affordable fashions”
  9. Evernote: “Stop wasting time on mindless work”
  10. Duolingo: “Learn a language with only 5 minutes per day”

Subject Lines For Retargeting

Retargeting emails are dispatched to subscribers when they neglect to finalize an action or a step in your sales funnel (e.g., abandoning their cart or not purchasing after a free trial). These emails aim to re-engage your subscribers in your sales process.

To craft effective retargeting subject lines, address objections, provide incentives, or warn them of consequences if they don’t act.

Here are a few noteworthy examples of retargeting email subject lines:

  1. Nick Stephenson: “How you can afford Your First 10,000 Readers (closing tonight)”
  2. Bonobos: “Hey, forget something? Here’s 20% off.”
  3. Target: “The price dropped for something in your cart”
  4. Syed from Envira: “Mary, your Envira account is on hold!”
  5. Syed from Envira: “I’m deleting your Envira account”
  6. Ugmonk: “Offering you my personal email”
  7. Animoto: “Did you miss out on some of these new features?”
  8. Pinterest: “Good News: Your Pin’s price dropped!”
  9. Unroll.Me: “⚠ Unroll.Me has stopped working”
  10. Vivino: “We are not gonna Give Up on You!”

Personalized Subject Lines

Email subject lines that incorporate personalization, such as including a recipient’s name, enhance open rates by 10-14% across various industries.

However, personalization goes beyond just using a name. You can also employ informal language, share personal anecdotes, or use wording that suggests familiarity or camaraderie.

Here are a few examples of effective email subject lines that incorporate personalization:

  1. Guess: “Mary, check out these hand-picked looks”
  2. Rent the Runway: “Happy Birthday Mary – Surprise Inside!”
  3. Bonnie Fahy: “Mary, do you remember me?”
  4. Kimra Luna: “I didn’t see your name in the comments!?”
  5. John Lee Dumas: “Are you coming?”
  6. UrbanDaddy: “You’ve Changed”
  7. Influitive: “So I’ll pick you up at 7?”
  8. James Malinchak: “Crazy Invitation, I am Going to Buy You Lunch…”
  9. Brooklinen: “Vanilla or Chocolate?”
  10. Sam from The Hustle: “I love you”
  11. Ryan Levesque: “Seriously, Who DOES This?”
  12. Jon Morrow: “Quick favor?”
  13. Mary Fernandez: “you free this Thurs at 12PM PST? [guest blogging class]”
  14. Mary Fernandez: “? your detailed results…”
  15. Syed from OptinMonster: “300% increase in revenue with a single optin + a neat growth trick from my mastermind!”
  16. Revolution Tea: “Thanks for helping us”
  17. Harry’s: “Two razors for your friends (on us)”

Straightforward Subject Lines

When you are unsure, opt for simplicity in your subject line. Surprisingly, these “boring” subject lines can yield high conversions.

The secret to success lies in consistently delivering value in your emails. Reserve your email sends for meaningful content, ensuring every campaign is packed with value. Over time, your subscribers will learn to open your emails regardless of the subject line.

For assistance in crafting better emails, explore our guide on 19 quick and effective tricks for enhancing your email writing.

Here are some examples of straightforward email marketing subject lines:

  1. Al Franken: “Yes, this is a fundraising email”
  2. AYR: “Best coat ever”
  3. Barack Obama: “Hey”
  1. “[Company Name] Sales & Marketing Newsletter”
  2. “Eye on the [Company Name] Update (Oct 31 – Nov 4)”
  3. “[Company Name] Staff Shirts & Photos”
  4. “[Company Name] May 2005 News Bulletin!”
  5. “[Company Name] Newsletter – February 2006”
  6. “[Company Name] and [Company Name] Invites You!”
  7. “Happy Holidays from [Company Name]”
  8. “Invitation from [Company Name]”

Sales Subject Lines

Sales email subject lines are designed to pitch a product or service to potential customers, enticing them to open the email and explore the offer.

These subject lines create urgency or exclusivity, using phrases like “limited time,” “exclusive offer,” or “sneak peek” to grab attention.

They typically include a clear call to action, such as “Shop now” or “Learn more,” prompting recipients to take action and make a purchase.

Here are some examples of effective sales email subject lines:

  1. “Limited time offer: Get 20% off your first purchase!”
  2. “Don’t miss out on our biggest sale of the year!”
  3. “Sneak peek: Introducing our newest product line”
  4. “Upgrade your [product/service] and save 10%”
  5. “Exclusive offer: Buy one, get one free!”

Newsletter Subject Lines

Newsletter email subject lines are vital for keeping subscribers engaged and informed about the latest updates and news from your brand or industry.

These subject lines should be clear and concise, offering a preview of the content inside the email to entice recipients to open it.

Here are some examples of effective newsletter email subject lines:

  1. “Stay in the know: Our monthly newsletter is here!”
  2. “5 must-read articles for this week”
  3. “New product announcement: Be the first to know”
  4. “Your weekly dose of inspiration and motivation”
  5. “Exclusive content: Subscribe to our newsletter for access”

Follow-Up Subject Lines

Follow-up email subject lines play a crucial role in reminding recipients of previous messages and prompting them to take action. 

Whether you’re following up on a sales inquiry, networking opportunity, or job application, these subject lines should be concise and compelling.

Here are some effective examples of follow-up email subject lines:

  1. “Quick follow-up on our meeting”
  2. “Just wanted to touch base on [topic]”
  3. “Checking in on your progress”
  4. “Friendly reminder: [Action needed]”
  5. “Don’t miss out: Last chance to [offer]”

Cold Subject Lines

Cold email subject lines serve as the first impression in outreach efforts to prospects or potential customers. These subject lines should be engaging, personalized, and relevant to the recipient’s interests or needs. 

Whether you’re aiming to initiate a conversation, offer value, or spark curiosity, crafting effective cold email subject lines is essential for grabbing attention and driving engagement.

Here are some examples of effective cold email subject lines:

  1. “Introducing [Product/Service] – A solution to your [problem]”
  2. “Would you be interested in [Value proposition]?”
  3. “Can we help you achieve [Goal]?”
  4. “Let’s chat about [Topic]”
  5. “Reaching out to explore a potential partnership”

The Best Subject Line Keywords

Numerous studies have delved into the impact of certain keywords on email open rates. Leveraging these keywords can enhance your email copy and subject lines to further increase open rates.

According to Alchemy Worx, which scrutinized 21 billion emails from 2,500 brands, the top five most effective subject line keywords were:

  1. “upgrade”
  2. “just”
  3. “content”
  4. “free delivery”
  5. “wonderful”
  1. “jokes”
  2. “promotional”
  3. “congratulations”
  4. “revision”
  5. “forecast”
  6. “snapshot”
  7. “token”
  8. “alert”
  9. “monthly”
  10. “deduction”
  1. “free”
  2. “ICYMI”


In crafting effective email subject lines, it’s crucial to understand the diverse strategies and tactics that can drive engagement and encourage recipients to open your emails. 

Whether it’s leveraging curiosity, humor, personalization, or urgency, the key lies in resonating with your audience’s needs and preferences.

By incorporating best practices such as clarity, relevance, and brevity, you can optimize your subject lines to stand out in crowded inboxes and compel recipients to take action. 

Additionally, staying attuned to emerging trends, experimenting with A/B testing, and continuously refining your approach based on data insights are essential for ongoing success.

Ultimately, mastering the art of email subject lines requires a blend of creativity, empathy, and strategic thinking. By consistently delivering value and relevance to your subscribers, you can build stronger connections, drive higher engagement rates, and achieve your email marketing goals.


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