5 Types of E-mail Subject Lines to Drastically Increase Open Rates

E-mail Sep 14, 2020

When it comes to emails, your first impression tends to be your last impression. You can write one of the most amazing emails ever but it will be of no use if no one opens it.

Your email subject lines can play a strong role in deciding whether your well-written email gets opened by people. A subject line should usually be between 50-60 characters and should influence the reader to find out more.

Here are 5 types of e-mail subject lines that you can use for your email marketing campaigns to increase open rates.

Subject lines that create urgency

Scarcity is a big driving force to attract people. FOMO (Fear of Missing Out) can be used as a good tactic for your subject lines since people don't like to miss out on things, especially in this social media era.

You can create urgency in 2 ways:

  • Limited stock of products
  • Limited period of time.

Some examples are:

  • “Limited period offer”
  • “Only 2 days remaining!”

Subject lines that use numbers and lists

Another way to create an exciting subject line and increase open rates is by using numbers. People find it more comfortable to open such mails as it's easier to focus because our brains are easily drawn towards digits. Numbers and lists also lead to curiosity, increasing the chances of people opening the mails.

Some examples are:

  • "10 best email marketing campaigns"
  • "Top 5 workouts for your core"
  • "7 trending cafes in New Delhi"

Subjects lines that showcase a story

Case studies are a great way to build your subject lines. People like success stories as it inspires them to take the necessary steps in their lives. They are also easily convinced with a tried and tested strategy and want to implement the same to achieve the high results.

For example -

  • “How intermittent fasting helped me lose 30 kgs in 3 months”
  • “Here’s how I scored 760 in my GMAT with just 2 months of preparation”    

The How-to subject lines

These type of subject lines are common yet successful when it comes to increasing email open rates. You should make sure that such emails give some value to the prospect i.e., these emails help the prospects learn something new about things they are already interested in. If there is no value, they won't bother to take any action.

Here are some examples -

  • "How to lose 10kgs in a month"
  • "How to write a successful blog post"

Subject lines that build curiosity

“Why is it that when one man builds a wall, the next man immediately needs to know what's on the other side?”

George R.R. Martin, A Game of Thrones

Last but not least, building curiosity in your subject lines can also help in triggering the desired response i.e., increase in email open rates. People don’t like to be left in suspense. Curiosity drives people to know more.

Here are some subject lines that build curiosity -

  • “What would someone with an IQ of 130 find too difficult intellectually?”
  • “Working out at home just got better with the help of this secret workout plan.”

Wrapping up

Creating a catchy subject line plays a big part when it comes to people opening your mail. A good subject line can help in increasing engagement and understand how much people liked it.

Just as your email content is worthless without a strong subject line, your subject line will be worthless and will be marked as spam if you don't provide the value that you promise in your subject. Your subject line and email go hand in hand. So, make sure to polish all the edges before sending out your emails!

All the best with your email marketing campaigns and let us know which of these ways helped you!

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