Top Subject Lines for Follow-Up Emails: Boost Open Rates Instantly

Subject lines of the follow-up emails play a very important role in the open rate, so it is wise to choose the best.

When choosing the subheading, special importance should be paid to its imagining, at which the viewer will not only notice the merging of the option but will also receive information about the topic of the further continuation. 

Regardless of the purpose of the follow-up email, from being in the sales process or a past customer, or even in a refresher to a previous conversation, the subject line for follow up email gives the first impression. 

This guide covers:

Follow-up email subject lines can be tricky, but this guide will help you understand how to ensure that they convert while keeping your audience interested as soon as they lay eyes on your email message.

Let’s dive straight in!

What Is a Follow-Up Email?

what is a follow-up email?

A follow-up email is a message that is sent to a recipient shortly after a primary message or a primary communication has been made. This appears relevant in controlling relations because they involve both commercial relations and friendship. 

In business communication, follow-ups are very useful, especially when there is a need to pursue a certain discussion after business meetings, sales presentations, or any form of business-related networking, among others. Others are to ensure that some vital concern is never left out when presenting, to show commitment in what one is doing, and to also ensure that one appears professional.

Additional e-mails should also be on time and concise and should relate back to the receiver. Thus, in sales, for instance, a follow-up can engage prospects by offering them a piece of relevant information or reassuring them, thus raising the chances of making sales. 

In other cases, follow-up emails come in handy when one has to remind an ether time or in response to a statement made earlier or in regards to some application or query. Last but not least is the golden rule of follow-up emails, which is to try and ensure you create goodwill and engagement; thus, there is a need to set up good follow-up emails for any follow-up mail stream.

Why are Follow-Up Email Subject Lines Important?

The subject line of the follow-up email is very important as it is the only message that represents the sender in the recipient’s working space after an initial interaction. It should capture the interest of the receiver and ensure that the required response is achieved as soon as the email is opened. 

In your busy inbox, where hundreds of emails may fight for space and time, a good subject line may make the difference between getting read and being deleted.

The subject line sets the tone or the feeling about the message as well as the purpose of the message without too much data giving influence to the receiver. Regardless of whether you are reminding someone of something they had previously agreed to, providing more information about a previous email, or taking a conversation to the next level, the subject line tells the recipient what you are doing. 

Also, a subject line should be quite powerful so as to maintain professionalism and stress the necessity of subsequent follow-up, which increases the probability of receiving a reply. To recap, a good follow-up email subject line raises the open rate, hence promoting communication and better end results.

Best Practices for Crafting Effective Follow-Up Email Subject Lines

best practices for crafting effective follow-up email subject lines

Designing an effective follow-up email subject line is highly important to lure your recipient into opening your email. The subject line you should aim for as a subject line is informative, engaging, and concise at the same time. 

If affected in the right way, it enhances your ability to get replies, which is the main purpose of a follow-up email. In this section of the article, here are some tips that may be of great help when designing great subject lines. Instead of doing this manually, you can use lead generation tools like BookYourData to craft these effective subject lines.

Keep it Personal and Conversational

The subject line of a follow-up email should also not be very official; instead, it has to be friendly or else casual. The main beneficial effect of personalization is that the human aspect is utilized, and the feeling is given to the recipient that you are personally addressing them, not email joining thousands of them. Just by saying their name or alluding to something you may have spoken about in the past, you can create relevance and connection instantly.

For example, instead of such subject as ‘marketing solutions, ’ the subject – ‘John, let’s follow up the conversation was had’ will immediately let the recipient know this is an individual e-mail and not a part of the mailing list. 

This brings to their memory the exact circumstance under which you last discussed, making the chances of an engagement. Also, it seems the group has adopted an informal way of writing; the language used is relaxed, and the recipient can easily reply.

Make Subject Lines Short and Crisp

Another fact is quite obvious: not all internet users are granted sufficient time to go through nicely detailed and elaborate subject lines. It’s important to make your follow-up subject lines short and snappy for quick consideration by your audience. 

It is recommended that your subject line be confined to 50 characters so that it can easily fit mobile innovations and agenda view panes. It also helps to make sure that you stay on point by boiling your presentation or pitch down to what it is that you have to offer.

For instance, instead of a message like “I discussed earlier with you regarding the various marketing techniques, I wanted to know the progress you have made,” we can make it shorter and to the point like “Follow up – Marketing Techniques.” Although this version of the message is considerably shorter than the original, the recipient does not feel overwhelmed, deciding to open the email or not, within a matter of seconds.

Relate to the Contents of Your Email

The subject line of a follow-up e-mail should always remind of the primary subject, no matter the nature of the follow-up e-mail. This is because a poor subject line means poor poll responses, and this may irritate the poll recipients. When the subject line is for one thing while the content of the e-mail is all about another, then the receiver loses trust in the sender, and therefore, the response rate dwindles.

For instance, if you’re sending a follow-up email after a particular meeting, the subject of the message should reflect that. One relatively basic but efficient example might be as follows: “Briefing and discussion of [Topic] discussed in today’s meeting.” ‘As promised, here is the report on operations for the third quarter.’ The subject of the email chosen has a relationship with the body of the email and can help avoid confusion or posing wrong expectations.

Avoid “Never-Ending” Subject Lines

A long subject line will be cut off at some point depending on the resolution of the devices being used to view the message, which reduces the probability of getting the message opened. One of the issues that should be minimized is using the so-called “endless” line titles, consisting of a lot of terms or complex expressions. 

However, the best choice is to select short, expressive lines that deliver the necessary information as fast as possible. Ideally, the subject line must be self-sufficient, and if someone only reads the first few characters of it in an e-mail preview, he/she should be able to understand what it is all about.

Do not overload your subject lines in order to make them longer; otherwise, it can be disadvantageous. Do not be wasteful in the body of the email. Whether one intends to remind or set a goal, just say what is necessary. 

For example, in place of a sentence such as “I would like to quickly provide you with some comments on the report,” the wording has to be “Did you find time to go through the report I sent you last week? It’s possible in such a manner to avoid delivering too much of the message text while at the same time including all of the details necessary for the identification of the previous message in the subject line.

Test, Test, and Test Your Subject Lines

Testing is a big part of email marketing, just like any other factor you may want to consider for the success rate of your campaigns. Since the subject line is the first message that the recipient sees, it is always effective to have two versions of the same message and then make a statistical analysis of the open rates and the engagement level. 

While experimenting with your subject lines, you are able to try different options to reach the best result gradually and, therefore, use only the most effective vocabulary.

For instance, you can compare which kind of subject line suits your audience better: the official tone or the informal one. Moreover, experiments with subject lines containing personalized strings or absolutely unrelated strings can reveal much about the target audience. 

Most email marketing platforms have incorporated some kind of A/B split testing to enable you to compare various subject lines. Thus, it is possible to fine-tune initial follow-up email actions to achieve higher results in terms of the given Goal.

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Examples of Follow-Up Email Subject Lines

examples of follow-up email subject lines

Choosing the right subject line for the follow-up email creates the foundation that leads to the preparation of an impressive follow-up email. The first time when you can influence the receiver to open your mail is at this point in time. 

Let’s look at different subject lines of the follow-up emails depending on the context and the type of email follow-up in question. You can buy email lists you want to follow up from tools like BookYourData. Here, it should help give some idea of where you might be able to deploy curiosity, what issues might be present, or even some levity.

General Follow-Up Subject Lines

General follow-up subject lines are ideal and can be used in any circumstance since they do not cause any problems. These are perfect for keeping things formal, especially when you’re just following up with someone to remind them of your previous talk or to schedule a meeting.

  • “Hello, just calling to see if there was any more information from our last talk?”
  • ”Continuing from where we left off”
  • "Circling back on [Topic]"
  • “Did you find the time to go through my last email?”
  • “We should probably discuss our further actions.”
  • “Just wanted to remind you that we have a meeting soon.”
  • "Any thoughts on the proposal?"

These subject lines don’t mess around and demonstrate that you are listening while keeping the conversation going.

Question-Based Subject Lines

There are times when they add a question type in the subject field, which will arouse the consciousness of the recipient. They are beneficial in that they make the recipient want to respond because they will create curiosity in the recipient and encourage them to open the email and continue the communication.

  • ”What do you think of it?”
  • “What can we do for the next steps of [Project]?”
  • “Did you get a chance to look through all the changes I suggested?”
  • ‘‘Are you willing to talk about the next tactics?’’
  • “How do you or your organization work through [Topic]?”
  • “Can we spare five minutes to talk during the current week?”
  • ”Hey, can we spend 10 minutes talking?”

Whenever you ask that question, you get a response and do not appear to be forcing information onto people.

Plans/Goals-Based Subject Lines

When the follow-up is centered on some plans and goals, plans and goals-based subject lines are appropriate. These subject lines bring to mind the goals mentioned in the E-mail message and focus on further actions to reach the aimed results.

  • “This is a good time to tie down our action plan for the [Goal].”
  • ‘’How are we going to assist you in getting [Company Goal]?
  • “Are we heading in the right direction to get [Project] done?’
  • “Tell me more about the goals towards 2024.”
  • “Well, the next thing to consider is [Upcoming Project].”
  • “Are we ready to go on and execute our set plan?”
  • “Do you think we can reach those goals this quarter?”

These subject lines communicate drive and get everyone on the same page, keeping their eyes on the prize.

Conversational Follow-Up Email Subject Lines

Choosing the appropriate conversation topic in the subject line also makes the email feel less professional. Learning to introduce yourself in the follow-up email subject lines makes you stand out from the rest. These are appropriate if you want to sustain a pleasant working relationship and keep the overall tone of the conversation informal. Here are the best subject line examples:

  • “Hello. I just called to see how everything is.”
  • “Any updates on your end?"
  • ”How are you guys doing—I just thought I’d check in!”
  • "How did that meeting go?"
  • “Hey, I am just quickly following up. Do you require any input from me?
  • “It was good to see you—let’s keep in touch.”
  • “Welcome. Tell me your concerns (or) how I can assist you.”

This informal and friendly style can make your emails sound like the recipient is receiving an actual email conversation, which will mean a higher chance of a response.

Promise-Based Subject Lines

A promise-based subject line strategy is centered on the promise to provide a certain value. These subject lines work their magic by focusing on the value of what’s being offered, such as info, resources, or solutions, which is even more appealing to the recipient than IF they read a ‘new message.’

  • “I told you that I will prepare a report, and here it is.”
  • "As promised, your guide to [Topic]"
  • “You wanted this, we have given it – here it is.”
  • ”Could you please provide the information you requested?”
  • ‘We have the solution to [Problem].’
  • ”This is what we talked over during the meeting.”
  • ”Here is the latest report we were expecting.”

By the time you begin a follow-up email, you must remember to follow up with something that isn’t necessarily a promotion; this makes your email stand out in the inbox.

Funny Subject Lines

Using humor to get people’s attention, ease the burden of the next email, and make sure that your recipients remember your message is always a plus. However, if the climate permits, then one can use humor in the subject line.

  • “Just me again—don’t hit delete!”
  • “I don’t want to sound like a spam email here.”
  • “This isn’t one of those emails.”
  • "Can I borrow 5 minutes of your time (I promise to return it)?"
  • “I wonder if my last email turned into a black hole?”
  • “Funny you, no pressure at all, but I am eagerly waiting.”
  • “Hello again. I just wanted to remind you that I exist and care about whatever it is we’re doing.”

It’s not always necessary that you stick to formal and professional language while writing an email; you have to add some sort of humor to the email because adding a funny tone to your email will make the recipient of the email feel relaxed and respond. You can use funny subject lines in sales email templates when sending cold emails using BookYourData.

Inspiring Subject Lines

The general topic of subject lines is to persuade your recipient. These work especially well when your follow-up relates to helping them get what they want in person or in his/her career.

  • ”Let’s make it happen.”
  • “Open a whole new degree of success with [Your Solution].”
  • “Together, we can reach great heights.”
  • ”All your dreams are possible—let’s do it.”
  • ”Are you set for the best year that you can ever imagine?”
  • “Want to make 2024 your best year? Shall we do this together?”
  • “The future is rather promising —let’s become closer.”

Instead of addressing the problems in messages, these cold email subject lines will make the recipient see your next email as a means to the next level and, therefore, will open it.

FOMO-Based Subject Lines

A key reason is the FOMO since no one wants to miss a business opportunity. Urgency and exclusivity in the subject line can help make the recipient open your email on the note that they are losing out on an opportunity.

  • “Truly, the best time to invest in this limited opportunity is right now!”
  • ”Final call to be a part of [Event]”
  • “Not many positions available left – you in?”
  • “Don’t waste time, this offer will not last!’’
  • “Don’t wait until it is too late. Act now!”
  • “You know time is not on our side – are you still up for it?”
  • "Final reminder: [Opportunity] ends soon!"

FOMO-based subject lines create a sense of FOMO and thus are ideal for timely and time-sensitive emails or special offers on products and services.

Curiosity Inducing Subject Lines

Curiosity-provoking subject lines can be used to ensure that people receive your mail and open it out of curiosity. These subject lines give one an initial clue about the content but don’t tell the whole story.

  • ‘‘Guess what I have for you today?’’
  • "You’ll want to hear this."
  • “Can you guess what we’ve been working on lately?”
  • “You don’t want to miss this one.”
  • “Shocking revelation on [Topic].”
  • ‘You will not believe this update.’
  • “Do you know the new development with [Topic]?”

In this way, you are able to create a desire that would make the recipient open your follow-up email to gather more information, and inside, there could be job application, inquiries, or news about something.

Catchy Subject Lines

Gimmick's subject lines are aimed at capturing the reader’s attention with a playful spin. They come in handy when you need your email to be seen and not be overshadowed by other, more common emails.

  • “The follow-up you’ve been waiting for!”
  • "Knock knock—guess who?"
  • "Your inbox just got better."
  • "Let’s make things happen!"
  • “We’re almost there—let’s wrap this up!”
  • "Time to seal the deal!"

Such catchy subject lines of cold outreach email templates will be clicked on by the readers due to the consideration of enthusiasm and clear communication in your follow-up email generated by BookYourData.

Customer Pain Points Subject Lines

Pointing out an area of pain for a customer in the subject line is always very effective in letting them know that you understand their problems and you’re willing to solve them. These subject lines appeal to the potential client on the basis of his/her need or a problem a person may have. Following are the email subject lines that work:

  • “Find it confusing to talk about [Pain Point]? We can help."
  • ‘’Here’s a step-by-step guide of how to solve [Problem] ’’
  • “Having grown weary of handling [Issue]? Let’s fix it."
  • “It’s time to completely get rid of [Challenge].”
  • "Facing [Pain Point]? We have the solution."
  • “Together, let’s get rid of [Problem].”
  • “This is how we can help you overcome [Pain Point].”

This way, you directly point to some of their pain, which shows them that you are interested in their needs, making the chances of getting a response high and marking the success of email campaigns.

Common Mistakes to Avoid in Follow-Up Email Subject Lines

common mistakes to avoid in follow-up email subject lines

The subject lines for follow-up emails can make or break your efforts to get your message seen, but with the following mistakes, your email can easily end up in the trash bin. Below is a list of some of the areas that you need to be cautious about in your follow-up email subject line.

Being Too Pushy or Desperate

People don’t seem to welcome emails that come across as pushy or that are sent out way too often. Distancing phrases such as “Why haven’t you answered yet?” or even something as direct as “I need an answer now?” may well put pressure on the recipient and potentially make them feel quite uncomfortable or even annoyed. 

This often has a negative effect, reducing the click-through rate and, potentially, the duration of the interaction with the recipient. However, avoid using rude language when addressing these colleagues in cold emails sent out using lead generation tools like BookYourData. This should be done politely with a gentle request instead of a commanding tone.

For instance, instead of writing, ‘You have to reply by tomorrow,’ write, ‘I would really appreciate it if I could have your reply before tomorrow.’

Not Including Enough Information 

The open rate is most likely to be low when the subject line is unanswered or unclear to the recipients of the content. Your subject line should give the recipient enough information to decide whether they should indeed open your email. Sometimes, the following expressions, Instant, call, or message, may sound too general to convey the message of follow-up.

To avoid all this and stand out from the crowd, it is necessary to include enough details with the subject of the email, such as the meeting that the email is in regard to. The subject of the email, ‘Our discussion on the planned activities for the third quarter,’ will make the recipient open the message because they get to know what it’s about.

Sending Mass, Non-Personalized Emails

Using follow-up emails that contain batch-and-quantity subject lines is the least productive, knowing that the recipients are going to be treated in the same common way as the rest of the list. Sending an ‘email blast’ with no effort made to individualize the subject line or body of the email seems almost cold.

It is crucial that you always try to involve the recipients’ names or something that you talked to them about in the subject line of B2B cold email templates. Mail hinting at the name of the recipient in the subject, for instance, John, here is a follow-up to our discussion on marketing, yields better results in opened emails.

Using Misleading or Clickbait Subject Lines

Using provocative headlines might appear as a strategy to capture the recipient’s attention right away, but it could go wrong. Using clickbait-type subject lines while sending cold emails using BookYourData, such as ‘You’ve won a free gift!!!’ only to find that within the email, the receiver is being offered a product to purchase is unprofessional and unbecoming.

It is important that the subject of the email is always included in the subject line with the content of the email being sent out. For example, If it is a job application, then it must have a proper job title. 

Peculiarities of building trust and professionalism are the cornerstones of effective communication, so do not fool your audience with fake offer subjects like the number of appointments, the revenue they can make, the bonus you are offering, etc.

FAQs About Subject Line for Follow-Up Email

Why is Personalization Crucial in Follow-Up Email Subject Lines?

The hope of something personal brings it right to the recipient’s attention, and that is why you have emails that appear to be customized for each recipient. Just providing their name or mentioning something from a past conversation makes people feel like they know you, open the email, and raise the likelihood they’ll interact with it.

How Often Should I Test My Email Subject Lines?

You should always perform A/B tests on your subject lines, especially when you are starting new email marketing campaigns or when changing your marketing approach in a big way. Sending emails in A/B tests with a change every few weeks is effective for enhancing productivity and optimizing the engagement of recipients and their openness to banners.

What is the Ideal Length for a Follow-Up Email Subject Line?

It is advised that the subject line of follow-up emails should not exceed 50 characters. This guarantees that it is fully visible on a mobile device screen and in inbox previews. A few words’ subject lines that are relevant to the content help to draw the recipient’s attention immediately and get higher opens.

Key Tactics to Perfect Your Follow-Up Email Subject Lines

Optimizing follow-up email subject lines can dramatically improve open rates and response simply because it can be simple and effective. Here is what you must do to guarantee your subject lines and, consequently, your conversion rates.

The Importance of Personalization

Using follow-up email subject lines requires a lot of strategies, and personalization is a key component. It can be as basic as a handwritten address and acknowledging a statement said in the previous communication process through email. 

By doing so, not only will email templates and voicemails improve open rates, but the relationship between salespeople and potential customers will also be enhanced. Sending specific subject lines gives a signal to the viewer that you’ve addressed their problems and makes it more probable that they will open your mail.

The Role of Testing in Perfecting Subject Lines

It is also recommended that testing applies to follow up email subject lines. Through split testing, you get to know which subject line has a higher open rate, whether it’s formal or casual. 

If you change your subject line on a weekly or even a daily basis and try different ones while comparing the results, which ones have better open rate and engagement, you will see that your campaigns are fine-tuned to reach their target audience.

Avoiding Common Pitfalls in Follow-Up Email Subject Lines

It’s crucial not to miss the interaction but not to be too aggressive or apply the ‘clickbait’ subject line strategy. Attempts at being too pushy when sending out emails or being misleading could be off-putting to the recipients and erode whatever level of trust people have in you. 

Moreover, the subject lines of any outreach email must be brief, clearly connected to the company name, and encourage call backs from potential customers after phone calls. This makes the message clear, and people are likely to respond in a positive way since trust has been created.

Make sure those initial emails are reaching your potential customers the first time around, hopefully eliminating the need to send follow-ups and sign up with BookYourData for 10 free leads today 🔥

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