The Ultimate Email Subject Line Library

We're not just another boring subject line suggester that offers subject line ideas without context. Pick your industry, goal, or occasion, and get unique email subject lines to stand out in a crowded inbox.
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Top Subject Lines For Your
Powerful Emails

The success of your email hinges on how good your subject line is. That's why you spend a lot of time crafting a perfect one. Speed up your mailer subject line brainstorming process by harnessing the largest subject line library on the internet.
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Text Messaging

Importance of Subject Line in Email

64% of your subscribers decide if they want to open an email based on your subject line. The subject line is used for hooking your subscribers and compelling them to see your offer. If you want to write the perfect subject line, make sure to have all these elements:

  • Make your subscribers curious about what's inside
  • Convince them to stop scrolling and check your email instantly
  • Boost your email open rates and overall campaign performance
  • Show your subscribers that you care for them through contextual personalization
Text Messaging

Email Subject Line Best Practices

Want to flex your creativity and write your own subject line? Here are some subject line best practices to help you get started:

  • Keep your subject lines short — up to 60 characters
  • Don't clutter your subject line — control emojis or caps
  • Avoid spam words or misleading offers
  • Personalize your subject lines (aka taglines)
  • Add numbers, separators, and special characters to grab attention
Text Messaging

Proven Email Title Success Formula

Your subject line should be clear, concise, and compelling at the same time. Here's a great formula that you can come back to every time you are writing a subject line for your email campaign:

Your Subject Line = Specific Offer + Relevant + Urgent + Personalization + Action Word

For example, here's a subject line created using the same formula:

Frank (Personalization) … Grab This (Action Word) 20% Off (Specific Offer) Deal Now! (Urgent)

Create Your First Email Campaign with Sender

When you have the perfect subject line, why not start creating your first email campaign? Sender offers a drag-and-drop email builder, user-friendly automation builder, popup form creator, supports SMS marketing, and much more. Also, you can schedule and automate emails to 2500 subscribers, even on the free plan.
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Best Email Subject Lines Examples

Looking for an example of subject in email? If you know how crucial your campaign's subject meaning in email is, check the following scroll-stopping opening lines used by the most successful email marketers. 

Flash Sale Subject Line Examples

⏰ Your Wait is Over. Flash Sale Starts in 2 Hours!

Loot the Best Deals in Our Annual Flash Sale.

Best Deals Live on Site for Next 4 Hours.

Newsletter Subject Line Examples

Are you making the same mistake?

Find a gift for your loved ones in the next 10 minutes.

Hey [First Name]! You Are Missing Out on Fun Deals.

Re-engagement Email Subject Line Examples

Hi [First Name] 👋 We Miss You

🥺I thought we were friends. Please come back.

Grab this One-time Special Offer, Just for you!

Promotional Email Subject Line Examples

New Deals just dropped. Claim your Offer Now.

Don't Miss out on $50 Off on Your Next Order.

Hey [First Name]! 50% Off for you

Holiday Email Subject Line Examples

Special Black Friday Deals Live Now

Happy Halloween! Start your Halloween Shopping Now.

Take your Easter Celebration to the next level

Cart Abandonment Email Subject Line Examples

You forgot Something 💨 Grab it before Offer ends.

We're holding up Your Favorites for You.

We love Your choice. Make it Official Now!

Birthday Email Subject Line Examples

Happy Birthday, [First Name]! We love you.

A Special Gift on Your Special Day 🎁. Open now!

Make Your Special Day Lovely with a Free Lunch from [Brand Name]

Seasonal Newsletter Subject Line Examples

Christmas Sale is live! Grab special Holiday Discounts Now.

Seasons Greetings (+ Special Pffer) from Your favorite brand

Happy Holidays! Participate in this Special Giveaway Now.

Didn't find a suitable subject title headline? Want more options for perfect subject line examples? Check out our latest blog newsletter subject lines for registering the highest open rates for your next campaign.

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