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Best Email Subject Lines: Tips you haven’t heard so far

Ever thought about the reasons behind a lot of unread emails in your inbox? Well, there could be several ones, you may have never subscribed to those ...

Ever thought about the reasons behind a lot of unread emails in your inbox? Well, there could be several ones, you may have never subscribed to those emails, high frequency of emails, and so on. But among these, subject line is the most influencing element that can affect the open rates of an email campaign.

According to Superoffice, 33% of email recipients open their emails based on the subject line alone.

Now, that’s a good number to trust that email subject lines are a vital ingredient for any successful email campaign.

So, how do you plan to optimize your email subject lines?

Well, Uplers with their divine blessings bring to you some tips behind the lesser known but best email subject lines.

1) Numbers speak louder than text

Your brand needs to stand out in a crowded inbox. So, try getting away from the usual text format and use the numbers.

According to a survey held by CampaignMonitor, subject lines that comprise of numbers get a 57% higher open rate than the one without numbers. So, instead of using ‘Half Price’ in the subject line, use ‘50% off’.

2) Go for pop culture

Nothing can be as cool as connecting with your audience by adding a spice of pop culture in your emails. Try using memorable puns or dialogues from a movie or use a song title. For an example, if your target audience comprises younger individuals, you can consider using ‘Harry Potter’ or ‘Spiderman’ series to make a connection with them.

3) #Hashtags are trending

Most of us know about the usage of hashtags on Facebook, Twitter, and Pinterest.  The Best email subject lines adapt the same principles.

Hashtags when used in a subject line looks filled with a lot of expressions and showcases your social media know-how. The subject line would appear like a Facebook or a Twitter post which may prove effective.

4) Humor is the best medicine

Humor attracts most of us, and some wittiness in the subject line can be considered as a tactic to stand out in the inbox. Consider using Jokes, funny narrations, and crazy one liners for making best email subject lines.

Have a look at some funny subject lines used by companies

UrbanDaddy: You’ve Changed
Groupon: Best of Groupon: The Deals That Make Us Proud (Unlike Our Nephew, Steve)
The Bold Italic: You’re Invited to a Wedding Expo that Doesn’t Suck!
Baby Bump: Yes, I’m Pregnant. You Can Stop Staring At My Belly Now

5) Preview text is the second subject line

With 50% of emails viewed on mobile phones, marketers need to act smart with their email subject lines because of the restricted character limit. Well, preview-text comes to rescue in such situation. It can act as the second subject line, and you have more space to influence your readers to open the email.

While Android allows 45 characters with spaces, iOS offers 90 characters with spaces. So, this additional space allows you to write something that complements your subject line.

6) Testimonials can be convincing

Testimonials on a web page or in the body of an email is quite common. But, ever imagined adding testimonials in your subject line? Well, placing positive reviews of well-established influencers can be effective.

Here are a couple of examples

The Kardashians Love Us, Do You?
How Shane Made Over $15,000 After Reading Our Book

Take Away

  • Use numbers instead of plain text when offering discounts
  • Use hashtags in your subject line to stand-out
  • Strategize the subject line for mobile users smartly
  • Testimonials from influencers can be crucial
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Kevin George

Kevin is the Head of Marketing at Email Uplers, one of the fastest-growing full-service email marketing companies. He is an email enthusiast at heart and loves to pen down email marketing content. You can reach him at or connect with him on LinkedIn.



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