7 Effective Email Subject Line Hacks to Drive Conversions

Subject lines

People judge emails based on the subject lines. If they are not compelling, the engagement rate drops.

To pique the readers` attention, email subject lines should be relevant to readers` interests and provide solutions to their challenges.

However, even when your subject lines provide value, if you use clickbait words to push people to read, you will still experience low open rates.

That`s why it`s essential to learn how to convince people to read your emails and perform your calls to action.

This article explores hacks to help you create email subject lines that readers will be curious to read.

1. Doing Email Segmentation

Don`t send emails with the same subject line to all your subscribers and prospects. Emails are effective if they are sent to a relevant person, and you can know that through segmentation.

Therefore, set different email campaigns based on the services or products you provide. Then group your subscribers according to what they subscribed for. When creating email subject lines, ensure to target the specific groups.

For instance, if you are in the vegetable farming niche, your segments can be

  • Kales segment
  • Cabbages segment
  • Spinach segment

Sending emails on this basis shows people that the emails concern them and be intrigued to read them.

2. Performing Email Subject Line Split Test

You never know what email subject line formula works for your subscribers. Maybe they don`t like subject lines without figures and respond positively to the ones with figures eg.,

Earn $1000 Weekly.

To know that, do an email subject line split test.

That involves creating two subject lines for one of your email list segments. Then send them one after the other.

Later, compare the subject lines' performance and pick the one with high engagement. Whenever you create an email related to that tested campaign, use the better-performing subject line formula.

That will give better results, considering that you already proved it to be effective.

3. Personalizing Email Subject Lines

Self-exalting emails disgust. That`s when instead of dedicating the email subject line to the reader; you base it on your product or service features.

Such subject lines don`t provide value to readers and will make them ignore your emails.

Instead, let the audience know that the email is meant to help them.

To achieve that, mention their name and use the second person tense (you) in the subject line.

Here is an example of a personalized email subject line:

Kibaki, Here Is How You Can Chat and Make $100 Daily

This shows that the sender knows who they are talking to, which increases the chances of getting high open rates.

Impersonalized email subject line example:

The Best Content Creators Cameras

Neither does this subject line ask the recipients to do anything nor show them any value for reading the emails. Therefore, it cannot trigger any action.

4. Creating Valuable Email Subject Lines

Readers open emails only if the subject lines convince them of how they can benefit.

Therefore, when creating subject lines, ensure they show readers the results they should expect by reading the emails.

To make emails valuable, ensure the product or service you provide offers outcomes that solve the readers` pain points.

Here is an example:

Instagram Marketing Course to Earn You $1000 Weekly

This subject line shows the figures readers should expect at what time. It enables readers to decide if the email is worth considering and be curious about purchasing the course.

It would be wrong to write:

  • Instagram Marketing Course
  • Earn $1000 Weekly

Though readers may be interested in Instagram marketing, they won`t be attracted because the subject line doesn`t promise any benefit.

On the other hand, even though people may want to earn $1000 weekly, they need to how. A bland subject line won`t get any attention.

5. Writing Short Email Subject Lines

Spare details for the email body. The subject line should pique readers` attention quickly and to do that, write short subject lines.

Apart from being boring, long subject lines are cut off in the mailbox preview, meaning your readers won`t understand it.

However, don`t make your subject lines too short. You cannot express yourself clearly with a two-to-three-word subject line.

9 words or 60 characters is the recommended subject line length, so be sure to utilize it effectively.

6. Using Correct Grammar


If your grammar is poor, people will lose confidence in your services or products. That will make you sound like a spammer, and your emails will be ignored.

Therefore, ensure your subject lines follow the correct syntax, but they don`t have to be complete sentences. Write your subject lines as you would titles, which involves capitalizing the first word.

Besides, capitalize the first letter in verbs, nouns, pronouns, adjectives, adverbs, and subordinate conjunctions.

Conversely, write coordinate conjunctions, articles, and prepositions in small letters.

Also, use simple language so people can easily understand. Readers ignore emails with difficult jargon.

Besides, it`s essential to proofread your emails before sending them. That helps correct the mistakes you make while writing. To speed up this process, use grammar-checking tools.

These tools detect and correct errors in the subject line as you write.

To use them, paste your email into the tool and it will show all the mistakes.

Alternatively, you can install their extensions to automatically identify errors as you write.

Some of the best grammar-checking tools include

However, these tools are not always correct. They are more helpful if you already know the correct grammar skills.

If have weak grammar skills, take grammar courses on platforms like

What`s better, these platforms allow you to register as a free or paid member. So, even when you don`t have money, you can still learn.

7. Using Email Subject Line Generating Tools

Writers` block discourages email creation progress. Instead of wasting much time thinking, use tools to motivate you and create effective email subject lines.

All you need to do is register for your preferred subject line-generating tool. Then type your subject line keyword, and it will generate various keywords to choose from.

However, ensure to personalize the subject line generated to suit the person to whom you want to send it.

Some of the best email subject line generators include

Create Targeted Email Subject Lines and Increase Conversions

Subject lines promote emails, and you cannot get open rates by only praising your products or services features. Rather, show your readers what value they will get value from the email.

You can achieve that by segmenting your emails and creating personalized emails.

To make your subject line easy to read and understand, use correct grammar and avoid difficult jargon.

Moreover, create short subject lines to avoid having them cut off in the inboxes.

In case of writer's block, use keyword-generating tools to automatically create powerful subject lines.

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