20 Tips to Write Catchy Email Subject Lines [+ Examples] (2023)

No matter what they say, people do judge emails by their subject lines.

20 Tips to Write Catchy Email Subject Lines [+ Examples] (1)

In fact, 47% of marketers say they test different email subject lines to optimize their emails' performance. That's why it's so important to craft subject lines that are compelling enough to get people to click through.

While they may seem like a small part of your message, they're one of the very first impressions you have on your email recipients. And, they're a marketer's ticket for standing out in a crowded inbox.

Do you want your email content opened, read, and clicked? It all starts with the subject line. Read on for some tried-and-true tips to help jazz up your subject lines and boost your email engagement.

What makes a good email subject line?

Before we get to our tips, let's go over some fundamentals of what makes a great subject line. Regardless of your goals, these are the essential elements that your subject line should possess:

1. Urgency

Creating a sense of urgency is an efficient way to get people to take action. You can create a similar effect in your subject lines strategically.

By communicating a known start and end date to a special sale or promotion, viewers scrolling through their inbox will click to see what they can get in that window of time. This is also a good practice when done in a small series of emails counting down the window of opportunity — as long as you’re not flooding their inbox and coming off spammy.

2. Curiosity

Sometimes, subject lines work because of their ability to send the message, "You will benefit from opening this email." But other times, it's good to maintain some sense of mystery — especially if it pique's the recipient's natural curiosity and interest. Because they require opening the email to get more information, they can result in, well, a higher open rate. But make sure the subject line, while enigmatic, still aligns with your brand. Too obscure, and it could end up being seen as spam.

3. Offers

Here's where that benefit of opening a given email comes in. At the end of the day, people love new things and experiences — especially when they’re free, or at least discounted. Open with that by including it in your subject line. Personally, I'm much more inclined to open my daily newsletters when there's an offer or allusion for "free stuff" directly mentioned in my inbox.

4. Personalization

No two email subscribers are the same — and, sometimes, that means the emails you send to them shouldn't be, either. At this point, marketers have never had more ways to learn about their subscribers' preferences, jobs, or general (dis)likes. So when you send them content, on occasion, make it catered toward the individual.

5. Relevance and Timeliness

When we subscribe to an email list, it's usually because we want to be kept informed, or at least learn more about a given topic (more on that later). Similar to piquing your audience's curiosity, crafting email subject lines that incorporate trending topics or timely headlines can help you establish your brand as an authority within your industry — and can compel people to click to read.

6. Name Recognition

Let's face it: We all have famous people who, at some point, we presently or previously have admired. And when you understand your audience's preferences and interests, you can pique their interest by including the names of these admired, recognizable individuals by including them in your content — and mentioning them in your email subject lines. But take heed: This tactic really only works when it aligns with your brand, product, or service. So keep it relevant, rather than just throwing out a name for the sake of recognition.

7. Cool Stories

At the risk of sounding like a broken record, here's another place where curiosity comes into play. By front-loading your email subject line with a compelling allusion to a story — but can only be read if opened or clicked — your audience is likely to become intrigued, and want to learn more. Again, make sure the story is relevant to your brand. Otherwise, it might just confuse your readers and prevent them from opening the email.

Now that you know the fundamentals, let’s dive into email subject line best practices.

Email Subject Line Best Practices

1. Learn from successful email subject line examples.

Whenever we're scratching our heads wondering what to make our subject line, we often look to examples for inspiration. Seeing clever use of wordplay or emojis on one of our favorite newsletters can help us think of new ways to approach our subject line.

To help you do the same, we've compiled a list of 100 email subject lines from real businesses. We hope you'll be just as inspired.

(Video) 7 Subject Lines That Get Your Emails Opened

Download the Free Email Subject Lines Examples Guide

2. Keep it short and sweet.

Email subject lines will get cut off if they're too long, particularly on mobile devices. And with up to 46% of email opens taking place on mobile, we recommend using subject lines with fewer than 50 characters to make sure the people scanning your emails read the entire message.

If you're struggling to keep your subject lines short, think about which words matter less and where you can remove a frivolous detail. For example, if you're sending an order confirmation, doesn't “Your order is being processed” look better than “Order #9435893458358 is being processed"?

The same goes for your regular emails: Don't waste your time including the word "update" or "newsletter" in the subject line. Some studies even suggest these words can decrease the message's open rate since it tells readers the email is associated with a series, and therefore they can catch the next one.

3. Use a familiar sender name.

That name recognition we mentioned earlier doesn't just apply to the famous — it applies to the familiar. When setting your sender name, be as human as you can. Olivia@yourcompany.com is both inviting and unintimidating to people when they open their inboxes.

If you've already met your recipients from a previous conversation, use your own name as the sender's address — even if the email is technically coming from the company as a whole. The best impression you can make on your customers is that they're working with you, the individual — not the entire business.

"If the 'from' name doesn't sound like it's from someone you want to hear from, it doesn't matter what the subject line is," explains Copy Hacker's Joanna Wiebe. Ultimately, people are busy, and they simply don't bother with you if you don't sound like someone who would make for an easy (or at least friendly) conversation.

4. Avoid the 'no-reply' sender name.

Thanks to the amount of spam people get these days, most people hesitate to open emails from unfamiliar senders. And, even fewer people like talking to a robot. Think about when you call a company and can't get a hold of an actual person. It's frustrating, right? This goes for email, as well.

Never use "noreply@company.com." I repeat: Never use this email address. Not only does it make it look less personable, but it also stops people from adding your email to their address book.

Instead, avoid using a generic email address and send the email from a real person. For instance, we once found that emails sent from "Maggie Georgieva, HubSpot" performed better in terms of opens and click-through rate than emails sent from just "HubSpot." (HubSpot customers: Learn how to personalize the "From" name and email address here.)

5. Use personalization tokens.

Remember the personalization we mentioned earlier? Using personalization tokens — like name or location — in the subject line adds a feeling of rapport, especially when it's a name. Everyone loves the sound of their own name. Plus, it increases clickthrough rate: In fact, research has shown that emails that included the first name of the recipient in their subject line had higher click-through rates than emails that did not.

One example of how brands affix this information to subject lines is the dog-walking company, Wag! who does this with dog names. Here's one such email that a HubSpot writer received:

20 Tips to Write Catchy Email Subject Lines [+ Examples] (4)

That's great personalization and great timing.

Another personalization tactic that works is to tailor subject lines to the recipient's location — things like lists of their respective cities' best outdoor bars and restaurants.

Just don't go overboard with the personalization here. That can be a little creepy. But little personalized touches show that you know more about your recipients than just their email address. However, if you can't (or don't want to) use personalization tokens in the subject line, use "you" or "your" so it still sounds like you're addressing them directly.

6. Segment your lists.

While email blasts that go out to your entire list might be relevant and helpful to some people, it won't be to others — and could cause confusion or frustration. Why is this restaurant sending me a list of the best local steakhouses when I'm a vegetarian? Why is this company sending me case studies when I just signed up for its email list yesterday?

Personalize the experience using information from the actions your customers have already taken — from which forms they've filled out, to which industries they're in, to what their personal preferences are. In email marketing, you can personalize your recipients' experience using a little thing called list segmentation.

(Video) THE 5 BEST EMAIL SUBJECT LINES | Examples + Strategies To Get More Opens!

7. Don't make false promises.

Your email subject line is making a promise to your reader about what you will deliver in your message. Make sure that you make good on that commitment — and do not try to get your email opened by making false promises. This will irk your audience, and they'll learn not to trust your subject lines, resulting in a lower open rate and a higher unsubscribe rate.

8. Do tell them what's inside.

Speaking of making promises, if your visitor has downloaded an offer and you're delivering it via email, it's a great idea to use a subject line that says something like, “Your new ebook inside!” or, “Your guide awaits!” This works better than a simple “thank you” in the subject line because it makes it clear that something is waiting inside the email.

9. Time it right.

Sending an email at the right time with the right subject line can make a huge difference in open and click-through rate. A prime example? When food publication Eater sends at 6:45 P.M. on a Wednesday evening that said, "Where to Drink Beer Right Now" — just in time for happy hour. Nailed it.

Another favorite example is a classic email from Warby Parker with the subject line, "Uh-oh, your prescription is expiring." It was sent two weeks before the recipient needed to renew his prescription. By sending an email at the right time, Warby Parker increased the chances of their email getting opened — and included a relevant call-to-action about getting a glasses upgrade, too.

10. Use concise language.

Keep in mind that people scan their inboxes very quickly — so the more clear and concise your subject line is, the better. It's usually a lot better to be concise than it is to use complex and flowery language — unless you're going for an elusive subject tone to entice your recipients.

When you're going for a concise subject line, think about how your email will benefit your recipients. You'll want to make that benefit very clear. For example, "Increase your open rates by 50% today” is more appealing than "How to increase open rates."

11. Start with action-oriented verbs.

Subject lines are similar to calls-to-action, in that you want the language to inspire people to click. Subject lines that begin with action verbs tend to be a lot more enticing, and your emails could be drastically more clickable by adding a vibrant verb at the beginning.

Actionable subject lines will inspire people to click on your email by instilling urgency and excitement. For example, in an email inviting people to a hockey legend dinner, the email subject line might read, “Dine with Bruins legend Bobby Orr,” rather than a more generic (and less actionable) “Local Boston Sports Legend Meal." The former email uses “Dine” to help the reader envision themselves at a dinner table.

12. Make people feel special.

The psychology of exclusivity is a powerful thing. When people feel like they're on the inside, it gives them a sense of belonging which builds loyalty and compels them to convert on your emails.

The right phrasing can make your recipients feel special — and the effect can be magical. A few ideas for phrasing include:

  • "For our beloved customers only"
  • "An exclusive offer for you"
  • "My gift to you"
  • "You're invited!"
  • "Private invite"

13. Create a sense of importance.

There's a phrase that, for many of us, is reminiscent of classic infomercials: "Act now!"

And while we wouldn't encourage using that exact language in your content, we do agree that communicating urgency and scarcity in an email subject line can help compel readers to click (or act) — when phrased creatively and strategically.

But because you don't want to be known as "the brand that cried wolf," use these subject lines sparingly, and try to limit them to when the occasion genuinely calls for immediate action.

14. Use numbers.

A lot of businesses send emails with vague statements in their subject lines — which is why using data and numbers is a great way to get your emails noticed, demonstrate a clear and straightforward message about your offer, and set the right expectations.

Just like with blog titles, using numbers in your subject line is an effective email marketing best practice. You might use numbers to refer to the title of your listicle, the page length of an offer, a specific discount, or the numerical benefit of a particular resource you're providing — like "Join more than 750 others at this event!"

15. Pose a compelling question.

Asking a question in your subject line can also draw readers in — especially if you're asking a question you know is relevant to your recipients' buyer persona. This is just one way to pique that curiosity we mentioned earlier. For example, you might try the following: “Are you making these SEO mistakes?” or “Do you know what your website is doing wrong?"

Zillow once sent an email with the subject line, "What Can You Afford?" that linked to a website showing apartments for rent. A subject line like this is both encouraging and a touch competitive: While it gives hope that there are apartments out there that'll fit within your budget, it also pits your cash against what the market offers.

Another example comes from DocuSign. It sent an email late in the lead nurturing process, with the subject line, "What are your customers saying?" The body of the email contained a bunch of case studies that were meant to help the recipient move closer to actually purchasing DocuSign. This was a smart move: Folks who are further down the funnel are likely more receptive to hearing customer testimonials.

16. Don't be afraid to get punny.

Most people love a good pun. It's a great way to delight your recipients and spice up your emails. Some of the best punny email subject lines come from JetBlue, with subject lines like "Land wander-ful low fares now!"

(Video) Email Subject Lines That Work

Quirky — a community-led invention platform — worded one of its email subject lines like this: "Abra-cord-abra! Yeah, we said it." That second part is conversational and self-referential — and exactly what most people would say after making a really cheesy joke in real life.

If you're the least bit punny, think about small ways you can slip them into your emails when it's appropriate. Just don't overdo it. And remember the rule: When in doubt, ask a coworker.

17. DON'T USE ALL CAPS or overuse exclamation points!!!

A subject line that says, “OPEN NOW AND RECEIVE A FREE TRIAL” or, "50% off coupon today only!!!!!!!!" isn't going to get your email opened. If anything, it'll probably get your email ignored.

Why? People don't like to be yelled at, and using all caps and/or a lot of exclamation points can rub people the wrong way.

Not only are these tactics disruptive, but they look spammy. So instead of using disruptive tactics like these to stand out in people's inboxes, try personalizing your emails, establishing relevance, and using catchy and delightful language.

18. Don't include a question and exclamation in the same subject line.

Here's a subject line that can automatically wind up in a recipient's spam folder: "Want a solution fast? Act now!"

The fast solution isn't the problem in the example above. It's also not “act now” — although those are known email marketing spam words. It's both phrases together. This is a classic email saboteur, and it comes in many forms. All you need is to ask and yell at the same time.

Oftentimes webservers flag emails as spam if they contain both a question mark and an exclamation mark in the subject line. The example above is a common one. A good solution? Don't do that!

Not only is this format overdone, but it's alienating to your audience. Open-ended questions are a show of ignorance; any good marketer knows their leads better than that.

19. Use engaging preview text.

While preview text isn't technically part of your subject line, it does appear right near the subject line — and it certainly deserves your attention.

Preview text provides recipients with a peek at the content inside your email, which email clients like the iPhone Mail app, Gmail, and Outlook will display alongside the subject line. (The exact amount of text shown depends on the email client and user settings.)

20 Tips to Write Catchy Email Subject Lines [+ Examples] (5)

When you don't set the preview text yourself, the email client will automatically pull from the body of your email. That can look messy depending on your email content, and it's also a wasted opportunity to engage your audience. (HubSpot customers: Click here to learn how to set the preview text of your emails.)

20. A/B test your subject lines.

Although these tips and best practices are a great place to start, what works best for some companies may not work as well for others. It's all about figuring out what works best for your specific audience. That's where A/B testing comes in.

While it can be tempting to use your intuition to predict what subject line language will make people click on your emails, you should always A/B test your highest-stakes subject lines, and tweak the wording according to your results. What works best for your audience: Long or short subject lines? Including numbers or not including numbers? Questions or statements? (HubSpot customers: Learn how to A/B test emails in HubSpot here.)

Now that we’ve gone through our best practices, let’s review the steps to creating good email subject lines.

How to Write Good Email Subject Lines

Step 1: Identify the purpose of the email.

Why is the email being sent and how does that inform the subject line? Identify the true purpose or intention of the email and use that as the foundation to build upon when brainstorming your subject line idea.

Step 2: Determine the call to action.

What will make the user click on the email? A discount? Something free? Important information? What is enticing enough to make them want to see or learn more about your offer? Having a call to action with an incentive yet to be seen is tempting.

Step 3: Draft multiple subject lines.

Write similar subject lines that use varying words and tones. You want to have a few ideas to choose from, so you’re not stuck stewing over the same sentence for long.

(Video) How To Write POWERFUL Email Subject Lines (7 Examples)

Step 4: Get feedback.

Have colleagues review the subject lines to give their feedback on which they preferred. Having a second opinion can help you see it from a different perspective.

Step 5: Test your subject line.

As mentioned earlier, perform an A/B test to see which subject line performs best. After you’ve conducted the test, take the most effective email subject line and use it in your upcoming email marketing campaign.

Now that we’ve gone through the steps to create a good subject line, let’s examine some effective examples.

Examples of Catchy Email Subject Lines

To give you some added inspiration, here's a quick list of the most intriguing subject lines we've seen recently.

EF Tours: “👻 Trip or Treat!”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (6)

This subject line from EF Tours has tasteful use of a quirky emoji, coupled with a sense of urgency from a time-bound sale. These two tricks create an email subject line that would stand out from the rest of your inbox.

Chanel: “Smoldering Red Lipstick”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (7)

This example from Chanel is simple but effective. Viewers can visualize a beautiful red lip, and feel enticed to click to see if the product really achieves a “smoldering” look.

Wish: “Electrify your night out.”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (8)

Wish helps the reader to see how much more fun their night could be in one of its dresses. With this imagery, they’ll want to see how fun their selection of dresses could be — especially if it’s discounted.

Drizly: “...here’s $5 to stay in.”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (9)

This subject line is more unique than others — it makes you question what Drizly means by the first half and explicitly gives you an incentive to open the email.

Shutterfly: “Claim your UNLIMITED free photo book”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (10)

While we mentioned earlier to be careful with CAPS lettering, it doesn’t overwhelm this Shutterfly subject line and makes an interesting offer.

Mediabistro: “Generous PTO and Summer Fridays”

20 Tips to Write Catchy Email Subject Lines [+ Examples] (11)

The viewer can envision themselves taking advantage of work perks like these from Mediabistro, and will feel inclined to read more on the subjects presented.

Catch more Clicks with Catchy Subject Lines

At the end of the day, if your emails aren't getting opened, they're not getting seen. By using some of our tips, we hope you can come up with creative and engaging subject lines of your own. You already have great content to share — now, prove it in your subject line.

Editor's Note: This blog post was originally published in July 2018 but has been updated for comprehensiveness.

(Video) How to Write Effective Email Subject Lines


What is an example of good subject line in an email? ›

Sumo's best email subject lines
Subject LineOpen Rate
1. I was right – and that's not good for you69%
2. 13 email marketing trends you must know64%
3. Before you write another blog post, read this61%
4. Are we still on for 12?61%
6 more rows

What makes a good email subject line? ›

Good subject lines are often personal or descriptive, and give people a reason to check out your content. Whatever your approach, it's important to keep your audience in mind, and test different words and phrases to see what they prefer.

What subject lines get the most opens? ›

In fact, subject lines that include words that imply time sensitivity–like “urgent”, “breaking”, “important” or “alert”–are proven to increase email open rates. Here are some great sample subject lines for emails that use the fear of missing out…

How do you write a strong subject line? ›

Highlight the value you have to offer.

Pique the reader's interest by offering them something that's helpful. Whether you're providing a speaking opportunity, a discount, or a service, make it clear in the subject line what's in it for them.

What is the best email subject? ›

Email Subject Line Best Practices
  1. Learn from successful email subject line examples. ...
  2. Keep it short and sweet. ...
  3. Use a familiar sender name. ...
  4. Avoid the 'no-reply' sender name. ...
  5. Use personalization tokens. ...
  6. Segment your lists. ...
  7. Don't make false promises. ...
  8. Do tell them what's inside.
23 Sept 2021

What are the 5 important parts to an email? ›

You can make it easier on your recipients by making sure your business emails include these five essential elements.
  • A Concise, Direct Subject Line. ...
  • A Proper Greeting. ...
  • Proper Grammar, Correct Spelling. ...
  • Only Essential Information. ...
  • A Clear Closing.

What is a concise subject line? ›

Keep it short and sweet. A good rule of thumb to follow is to keep your subject lines to 50 characters or fewer. The key is to use as few characters as possible to get your message across. An analysis of more than 40 million emails found that three to four words is the ideal length for a subject line.

How do you write an email subject? ›

The first one is correct. “With regards to” is wrong. It should be “with regard to.”

What is the most professional phrase in email writing? ›

27 phrases for the opening lines of your email
  • "I am writing to you with regards to… "
  • "I am writing to you to follow up on… "
  • "I wanted to let you know that… "
  • "Your action is needed regarding… "
  • "Please see the following update"
  • "This is a quick note about… "

What are some good email endings? ›

Think “Sincerely,” “Best,” “Thanks,” or something like “Have a great weekend!” Unless you're more than a few emails into an email thread (especially over a short period of time) or you're very close with the recipient, you need a professional closing for your email.

What is professional email example? ›

I would like to take a moment to introduce myself and my company. My name is [name] and I am a [job title] at [company name]. Our company provides customers with cutting-edge technology for all their email signature needs. At [company name], there are a number of services we can offer, such as [short list of services].

How do you sound like a professional email? ›

How to Write Emails that Make You Sound Professional
  1. Use a Professional Email Address.
  2. Write a Short, Descriptive Subject Line.
  3. Address the Reader Appropriately.
  4. Write Concisely.
  5. Avoid Emojis, WRITING IN ALL CAPS, and Excessive Exclamation Marks.
  6. Use Free Tools to Eliminate Spelling and Grammar Errors.
3 Oct 2020

How do you attract attention to someone's email? ›

10 Tips for Emailing Really Busy People
  1. 1) Research them. Don't make assumptions about the person you're emailing. ...
  2. 2) Perfect the subject line. ...
  3. 3) Establish relevance. ...
  4. 4) Identify and build a connection. ...
  5. 5) Make them like you. ...
  6. 6) Inspire reciprocity. ...
  7. 7) Convey your authority. ...
  8. 8) Use an appropriate voice and tone.
26 Mar 2016

What are the 10 parts of an email? ›

Parts of an email message
  • Subject. Subject is a description of the topic of the message and displays in most email systems that list email messages individually. ...
  • Sender (From). This is the sender's Internet email address. ...
  • Date and time received (On). ...
  • Reply-to. ...
  • Recipient (To:). ...
  • Recipient email address. ...
  • Attachments.

What are 4 things an email must have? ›

Here are five things that every email needs to stand out in a crowded inbox.
  • A Good Header. The header is the very first thing someone will see when they open your email. ...
  • A Direct (and Specific) Message. ...
  • A Call to Action. ...
  • A Great Image. ...
  • A Killer Subject Line.
8 Mar 2016

How do you introduce yourself in a subject? ›

Use a short, descriptive subject line. Use a standard greeting like “Dear” or “Hello,” followed by the recipient's name. Introduce yourself with your full name, job title (if relevant), and any other details that the recipient should know about you. Early in the email, provide your reason for writing.

What is a clear subject line? ›

Let the subject line be composed as a headline of a newspaper. Just as the newspaper's headlines are intended to attract readers to read the articles within, you can phrase your subject lines in such a way that you spark the recipient's curiosity and he or she will not be able to resist reading the email.

How do you brief a subject? ›

Give information in a clear, concise manner to emphasize your main point. Speak clearly and at an adequate volume, maintain positive body language, make eye contact with all audience members when speaking, and stay within your scheduled time frame. Remember, a picture is worth a thousand words.

How do I personalize my email? ›

Keep on reading to learn 8 effective email personalization practices.
  1. Segment email lists. ...
  2. Talk to them with their name. ...
  3. Send behavior triggers. ...
  4. Create standouts. ...
  5. Give them tips and tricks to better use the products they purchased. ...
  6. Reach out at the right time. ...
  7. Suggest relevant products.
22 Oct 2020

What words should you not use in an email subject line? ›

What Triggers Spam Filters? Words to Avoid
  • Anything to Do With Money. Almost everything that's associated with a dollar sign — think of your local used car salesman. ...
  • “Marketing” ...
  • “Exclusive” ...
  • Superlatives. ...
  • Days of the Week. ...
  • Earn. ...
  • “Free”

What should you not put in the subject line of an email? ›

Here are the 7 biggest things to avoid when writing your email subject lines:
  1. Wordy Writing. ...
  2. Subject Line Recycling. ...
  3. Certain Specific Words. ...
  4. Virtual Shouting. ...
  5. Excessive Emoticons. ...
  6. Typos. ...
  7. Mistaken Identity.
6 Jul 2015

What should you avoid in the subject line of an email? ›

11 email subject line mistakes to learn from
  • Writing a generic subject line. ...
  • Forgetting preheader text. ...
  • Not leveraging urgency in the subject line. ...
  • Not optimizing for mobile. ...
  • Shouting in the subject line. ...
  • Using special characters. ...
  • Filling your subject line with spammy words. ...
  • Run-on subject lines.

How do you subject a professional email? ›

  1. Most Effective Ways in Writing Professional Email Subject Lines.
  2. #1: Start with Action-Oriented Verbs.
  3. #2: Make Subscribers Feel 'Exclusive'
  4. #3: Create a Sense of Urgency & Scarcity.
  5. #4: Ask a Question that Begs to be Answered.
  6. #5: Invoke a Level of Curiosity.
  7. #6: Get Controversial.
  8. #7: Leverage the Power of Free.
15 Jun 2022

What is an example of a poor subject line? ›

4. “We Did a Study and Now We Want You to Read the Whole Thing Right Now So That We Can Get Feedback and Sell You Something

Can I write my name in subject line? ›

Using your reader's first name in the subject line of your email makes them feel valued. Out of the dozen emails you receive in your inbox daily, the ones that usually catch your eye are the ones that mention your name in the subject line. The same goes for all your readers and customers.

Can you say free in a subject line? ›

These examples show that, contrary to popular belief, email providers are delivering emails that contain the word 'free' in the subject line. So yes, you can use it, but it's important to use it in the right context. Your subject line must appeal to your subscribers, otherwise they won't open!

What are the do's and don'ts of subject line? ›

7 Dos and Don'ts for Killer Email Subject Lines
  • DO: Get personal! ...
  • DON'T: Limit yourself to first names when you personalize! ...
  • DO: Have a call to action! ...
  • DON'T: Use click-bait! ...
  • DO: Give your audience direction! ...
  • DON'T: Give up! ...
  • DO: Keep it short and sweet.

Should you always put a subject in an email? ›

The subject of your email is perhaps the most important few words in the entire email. It is the first impression, it is your tagline, it is the reason the recipient will, or will not open it. The purpose of the subject line is to get the person reading to say three simple words: "Tell me more."


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