How to Write Effective Welcome Email Subject Lines

In writing emails, it is essential to have the appropriate subject for your message. It helps the receiver of your correspondence get a glimpse of what you are trying to discuss with them. Welcome email subject lines allow you to summarize your thoughts within a few words.

Subject lines act as the hook for your message. The receiver gets an idea of what they will read when they open the email. That way, they can jump right in and read the whole text.

Are you having trouble writing your email subject lines? Worry no more! This article will teach you the three useful tips to remember in making welcome email subject lines.

What is an Email Subject Line?

An email subject line is an introductory statement used in email marketing. The first sentence or paragraph of the email introduces the message’s content to the reader.

The subject line can persuade the reader to read the whole email message. In other words, it will tell the receiver whether to open the email in the inbox. 

A subject line is also an excellent way to entice the reader into clicking on your web page link.

It is a good idea to make your subject lines more attractive by appealing to your client’s emotions. You can, for example, use emoticons to make your subject line punchy.

Subject lines are a quick reminder of your email’s words when the recipient opens the message. 

You should write your email subject line in such a manner that will persuade your potential customer to read the correspondence.

Mailchimp CEO Neil Patel also calls it the hook of the email. A well-designed subject line can catch the receiver’s attention.

The Three Types of Email Subject Lines

Aside from being the hook of the email, email subject lines have three types. It is essential to distinguish the two of them when you are trying to write an email. They have different purposes from one another.

Let’s get to know them more!

1. Primary Email Subject Line

A primary email subject line pertains to the original subject line of your message when you first sent it. It is the first subject line you use to start correspondence with your client.

Also, it discusses the overall context of the topic you are trying to discuss with the receiver.

2. Response Email Subject Line

The opposite of a primary email subject line is a response email subject.

You use response email subject lines to respond to a particular primary email message. Usually, you add a “RE:” on the subject header accompanied by the topic at hand.

3. Welcome Email Subject Line

This email subject line intends to make clients feel accepted in a company’s atmosphere. It allows you to engage with them about a recent membership purchase warmly.

You use this to let a client know that they are given the honor to join a club, institution, or guild.

3 Useful Tips in Making a Welcome Email Subject Line

Now, you know the definition and three types of email subject lines.

It’s time you learn about the three useful tips for making a welcome email subject line. 

Always remember these tips to prevent any misunderstanding in your correspondence!

1. Keep It Short

One of the essential things you should know about writing a welcome email subject line is keeping it short.

Remember, the subject line acts as your email’s “title,” not the entire body of your message. Save that up later when you compose the whole message.

Keeping it short enables you to effectively persuade your email’s receivers to read the entire email.

2. Keep It Simple

Aside from keeping your subject line short, you should also simplify it.

Do not use complicated words and incomprehensible phrases. When composing an email, you should remember to write in the tone of your target receiver.

Also, a simple email subject line allows the person you are corresponding with to understand the thought of your message efficiently.

3. Keep It Informative

Lastly, your email subject line should be informative.

Can you recall the primary purpose of a subject line as aforementioned? It intends to inform your readers about the topic covered by the email.

Take advantage of the subject line as your introductory phrase or sentence tackling the email’s topic.


Subject lines are an essential element of an excellent email. Without these, the people we send our emails to will have a hard time understanding the context of our message. Remember everything you have learned from this article when writing a welcome email subject line.

Abir is a data analyst and researcher. Among her interests are artificial intelligence, machine learning, and natural language processing. As a humanitarian and educator, she actively supports women in tech and promotes diversity.

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