Skip to content

Best Practices Email Marketing Subject Lines

The subject line is often the most important part of the email due to it’s ability to determine if it is opened or deleted. A compelling subject line can make all of the difference. If a recipient sees your email and believes that they are going to gain something by reading, they are more likely to open it. This post will help you improve your subject lines and hopefully increase conversions. You may have worked hard to build your email list, but do you work just as hard to attract people to open and read your messages? Or do you use email subject lines that are commonplace in the industry that fail to capture anyone’s attention?

Subject lines are an email’s first line of defense; they’re the first thing people see. So why not use this prime real estate to your advantage? Even though it seems like a lot of effort to write, test, edit and resend them, when you get one of those coveted opens from a good subject line, it’ll all be worth it. Let’s look at some more creative subject line best practices. The key to getting people to read your email is to write attention-grabbing subject lines. These types of subject lines get the reader more excited about what the email contains and more interested in taking action on the email.

Make your email subject lines clear, concise, and personalized.

Make your email subject lines clear, concise and personalized.

It’s important to give your readers an idea of what they can expect from the email as soon as possible. A good way to do this is by using a summary line that tells them what they will learn from the article or how it will help them solve their problem. Your summary line should be brief, concise and to the point. This is where you talk about what’s inside without giving away any spoilers!

You want people who are new readers experience with your content to know exactly what they’re getting into before opening up your emails; this helps build trust between you and your subscribers so when they click through it’s not completely unexpected content waiting for them on the other side!

A good way we’ve found success using this strategy is by using conditional statements like “If you’re looking for…” or “If you have ever wondered…” – these types of sentences let readers know exactly why this particular subject matter was brought up in today’s newsletter / blog post / social media post etc..

Use a sense of urgency to entice action.

In the subject line, use words like now and limited time to create a sense of urgency. “Now” implies that the offer is only available for a short period of time—and you want to make sure your audience doesn’t miss out on it.

“Limited time” means that your audience has a set amount of days or hours left to take advantage of an offer before it expires.


  • Last chance on our most popular deal!
  • Limited Supply – Get Yours Today!

Keep it under 50 characters.

The 50-character rule is a guideline, not a hard and fast rule. Some email providers will truncate subject lines at 35, 50 or 60 characters.

For this reason, it’s important that you keep your subject line short enough so that it doesn’t look as if something is missing from the end of your message. However, don’t make your subject line too short — otherwise there may be no room for your recipient to add their own thoughts about what they just read before hitting “Reply All” on their smartphone!

Don’t use ALL CAPS or a lot of exclamation points.

  • Don’t use ALL CAPS or a lot of exclamation points.
  • All caps is considered rude and can be difficult to read, so don’t use them! It’s also annoying when people write emails with too many exclamation points because it makes it look like they’re yelling at you, which isn’t very friendly. Sometimes people will use emoji for a subject line to make it seem more fun and friendly, but if you do this, please only do it sparingly—I hate seeing all my emails come in with bright yellow faces on them!

Leverage power words and emojis.

No matter what type of industry you’re in or what kind of business model you’re using, there are some key words and phrases that are proven to be more effective than others. Here are a few examples:

  • Free (or something similar like free trial)
  • New (or something similar like new feature)
  • You (your name)

These can be used alone or in combination with each other. For example, “Free Trial Now” would work better than “Trial Now.” The word “free” is much more powerful and tells the reader right away that they don’t have to pay anything. Your audience will appreciate this because most people don’t feel like they have extra money laying around these days. You can also try adding the word “immediately” at the end of your subject line if you want it to stand out even more. Here’s another example: “[Your Name] Get 10% Off Today!” This one uses power words such as get and today while also mentioning an offer that only lasts for a limited time!

Avoid spam trigger words.

Spam trigger words are words that will appear in the subject line of an email and automatically flag it as spam, even if it’s not. These words include:

  • Free
  • Save
  • New
  • Now

Avoid these words at all costs! If you want to know what others are doing to get their emails opened, check out our blog post on the top email marketing tips for 2019.

Use the preview text to add context.

The preview text is a vital part of your subject line. It should entice the reader to open the email, giving them a reason to do so.

You can use it to add context and content to your subject line, as well as clarify it if it’s not clear enough on its own. You can also use it to summarize the email itself, adding further incentive for the user to click through.

Use these best practices when writing emails subject lines to increase open rates!

When it comes to writing email subject lines, one size does not fit all. Your subject line should be tailored to your audience and the type of email you are sending. Here are some best practices for creating engaging, high-performing subject lines:

  • Use power words. Power words are words that convey emotion and action like “now” or “today” or have a specific connotation like “free” or “new.” When used properly, these words can help improve open rates without adding extra length to the message itself.
  • Personalize content when possible by using names in preview text or customizing them based on user activity (i.e., if someone has made several purchases from your store). This will make recipients feel more connected with you as an organization and increase engagement with your brand overall — which means more opens!

Part 1 of 2: Subject Lines for Job Applications

  • Keep it concise.
  • Use relevant keywords.
  • Keep it professional and courteous.
  • Make it easy for the recipient to understand what you want them to do.

Follow job application email etiquette.

  • Keep it formal.
  • Include a subject line.
  • Be concise in the body of the email.
  • Sign off with your full name and attach your resume, if you have one available.

If you’re sending a follow-up email, keep it brief so that you aren’t overwhelming your recruiter or hiring manager with too much information at once: “I wanted to make sure that my application for [position] was received and reviewed by the appropriate person(s) before moving on with my job search.”

Include a subject line with the job title and your name.

  • Include a subject line with the job title and your name.
  • You may want to include your full name in the subject line, or at least the first few letters of it. This way, people will know who you are and what role you’re applying for when they see it in their inboxes. If you don’t do this and just send an email without any information about what position you’re seeking, it could be deleted as spam by someone who doesn’t recognize your name or hasn’t heard of the company before.

Use a subject line that explains what you’re asking.

  • Use a subject line that explains what you’re asking. You want the person reading your email to know exactly what they can expect once they open it and read your message. A simple yet effective subject line is “Request for Meeting With Client X” or “Meeting Request for Client X.” This is easy to understand and doesn’t leave much room for misinterpretation, which makes it easier on both parties involved!
  • Be polite, but firm. Asking someone for something in an email can feel like you’re nagging them all day long until they say yes (or no). Try not to come off as rude or pushy; even though emails are brief and impersonal, there’s still a way to make them personal! Instead of being demanding when asking someone for help or something else, try making it sound like you’re asking a favor instead by phrasing the request with: “Would you mind…” or “Would it be possible if…”

Consider using a referral in your subject line.

If you are applying for a job through a referral, it can be very helpful to mention the person who referred you in your subject line. Mentioning that there was a connection between the company and yourself can help demonstrate that you had a personal introduction to someone at the company. Additionally, if this person has worked with the company before and knows its reputation, they could be able to vouch for how well they treat employees or even provide any insight into what it’s like working there.

For example:

  • “Please consider me for [position]! I’ve been recommended by [name].”

Part 2 of 2: Subject Lines for Introduction Emails

In the second part of this guide, we’ll be taking a look at some specific email subject lines you can use when you are introducing yourself to someone new.

  • Include a brief introduction of yourself: This should include things like your title, name, and department. If you want to be really professional, consider including your LinkedIn profile link here (if the person doesn’t have it already).
  • Provide your own contact information: The point is for them to find you on their own! Don’t make them work for it. Just provide your name and email address at the bottom of the email with “Please feel free to reach out if there are any questions about me or my work/company.”
  • Use an email signature with everything else: You know all those little details about how people identify themselves? Like what school they went to or what company they work for? Well add those into an email signature so that other people will see them when they receive one from you!

Introduce yourself in the email.

  • Introduce yourself in the email.
  • Make sure to include your contact information at the end of the email in case you get separated from each other.
  • Check that you are sending it to the right person, and not someone else with a similar name or title.
  • Make sure your subject line is clear enough to catch their attention and make them want to continue reading (i.e., “I’m your new boss”).

Include a professional email address.

What’s in a name? Everything.

When it comes to email addresses, you should use one that accurately reflects your professional identity and brand. A personal email address such as “” sends the wrong message about who you are as a professional (even if it is accurate). Make sure that every email address associated with you has its own unique domain, like or This will help people remember your name and associate it with all the good things they know about your company–and none of the bad ones!

Make sure to include your contact information at the end of the email in case you get separated from each other.

Make sure to include your contact information at the end of the email in case you get separated from each other. If you’re writing to a friend, you can also include your social media handles for other ways to keep in touch. If you’re writing to a professional connection, consider including your LinkedIn profile.

  • Name:
  • Email address:
  • Phone number: *If applicable*

Part 3 of 2: Subject Lines for Request Emails

If you have a request to make of your contact, be sure that the subject line reflects that. Make sure the word “request” is included in the subject line and state what you are requesting. If there are multiple requests, use different subjects for each one.

For example:

  • Request to speak with someone about X issue by May 1st at 5 p.m. (this request will go into my calendar as “call 5/1”). Or if it’s not urgent or time sensitive:
  • Request for information about X topic (this would go into my email as “info 5/2”).

Use “request” in the subject line if you are making a request of someone.

> “Your email subject line should include the word “request” if you are asking someone for something. This is a polite way to open the conversation, and it tells people exactly what they need to do in order to respond. Give a short summary of what you are asking, and set a deadline if applicable. For example:

> Request for meeting on Friday

> Request for information about X (deadline: June 20)

> Request for help with Y (deadline: Wednesday)

Be specific about the request in the subject line, especially if you have made several requests recently and need to distinguish them from one another.

When you make a specific request, your reader will know exactly what to expect from the email. For example, if you’re asking someone to reply with their address so you can send them a package or other item, be sure the subject line reads “Please send me your address so I can send you [item].”

If possible, attach an image of what you want to send along with your request for an individual’s contact information (this is especially helpful if it’s something like an invitation that requires RSVP). This can help ensure that people don’t overlook your email in their inboxes as they read through new messages.

Include important deadlines in your subject line.

With so many factors to consider when crafting a subject line, it can be hard to know what will work best. Here are some tips:

  • Be specific and relevant. Use your subject line to let the reader know exactly what they are about to receive in their inbox. If you’ve asked them for information, mention it—for example, “Get the cover letter template,” or “Read our latest article.”
  • Be clear and brief. Keep your email’s purpose in mind before writing a long-winded subject line that may confuse the recipient (and bury the important details). Your goal is to entice readers into opening your email—not scare them away!
  • Don’t use all caps or special characters unless otherwise directed by your company’s policy on professional communication with external parties like clients or partners outside of work hours (which some firms require). This also applies if you’re sending an urgent email requiring action from someone who doesn’t normally communicate with coworkers outside of office hours; doing this could make them think something dire has happened when really all you need is another set of eyes on something before tomorrow morning arrives!

Part 4 of 2: Personal Email Subject Lines Examples

The following are some examples of personal email subject lines:

  • Hey, it’s me!
  • Hey, !
  • How’s it going?


You should use a call to action in your subject line. Studies show that people are up to 62% more likely to respond to your email if you ask them to do something in the subject line. The call to action can be as simple as asking for help with something or asking them a question. Whatever it is, make sure it’s in the very first sentence of the subject line and make sure it’s compelling. Regardless of what the content of your emails may be, your subject line will either attract the reader to read the message or it will drive them away.

Leave a Reply

Your email address will not be published.