It is said: “First impression is the last impression.”

That’s what a subject line does. It is the first and the foremost line that your audience reads, and it also denotes what the email is all about. We cannot ignore the significance of the subject line as it is the first step to increase engagement. Thus, we need to make sure that the subject line should grab the attention of our audience and generate more engagement.

Here are some tips that we can follow while creating an attractive, attention-grabbing subject line:

• Keep it short: Subject like should be quick enough to read and grab the attention. Try keeping it short.
• Make it interesting: Subject line should be unique and interesting. Try using the words that grab attention and make your audience open the email. Use action-oriented words that make the recipient take action as soon as he reads the subject line.
• Include the email content: Include some content that you will use in the email. This makes the recipient understand what the email is all about or an idea of what he is going to read.
• Valuable information: The subject line should be valuable. The recipient should be convinced that the email he is going to reads is beneficial for him.

Apart from this, you can even use email marketing tools like MailEngine (link in comments), MailChimp, AWeber, etc. that allow you to design your email subject lines and includes A/B testing to make it more unique and attention-grabbing and make you understand what works best for your targeted audience. These tools are very convenient and cost-effective too.

I hope you find this answer helpful!

Good Luck!