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Memorial day is coming and this means that summer is really close. But before you rush to prepare grills and meat, some serious work must be done.

Memorial day is one of those times when ecommerce marketers can definitely take advantage of to increase sales.

According to Forbes, nearly one-third of all Americans plan to shop on Memorial Day weekend, and knowing the fact that online sales are steadily growing every year, it’s pretty obvious that ecommerce businesses should prepare accordingly.

But before you begin on these Memorial Day subject lines, be sure to check our proven techniques on creating the best email subject lines.

Although the content is key to a successful email campaign and increased sales, subject lines are the 1st step towards it.

If they are uninspiring, plain and boring, no one is going to click the email in the first place.

In this blog post, we’ll share our top picks for Memorial Day subject lines that will increase your open rate and, therefore, take subscribers towards a purchase.

Click here to get your FREE copy of ‘515 High Converting Subject Lines for Any Campaign’

Top 5 best performing Memorial Day subject lines (based on Omnisend Research)

We searched through more than 9,000 of our bigger brands’ 2017-2018 Memorial Day email campaigns to find out what the best, highest-performing subject lines are.

Because we’re dealing with subject lines, we’re focusing mainly on which subject lines had the highest open rates.

Then, we’re also looking at the click rates for each spring subject line.

#1 Memorial Day subject line: “30% Off Memorial Day Sale

  • Open rate: 44%
  • Click rate: 16%

#2 Memorial Day subject line: “Memorial Day savings – save 25% off EVERYTHING!!

  • Open rate: 38%
  • Click rate: 18%

#3 Memorial Day subject line: “HAPPY MEMORIAL DAY WEEKEND!

  • Open rate: 37%
  • Click rate: 17%

#4 Memorial Day subject line: “Memorial Day Secrets

  • Open rate: 34%
  • Click rate: 7%

#5 Memorial Day subject line: “MEMORIAL DAY WEEKEND PROMO: Memorialday17

  • Open rate: 33%
  • Click rate: 4%

With Memorial Day subject lines, we see that some merchants are not willing to put a discount percentage or other obvious benefits, even though they actually worked.

Looking at the top 2 subject lines, a clear discount was definitely an important factor that increased the open rate.

Also, an interesting tactic was chosen in the #5 subject line. Even if the email is not opened, there’s a chance that a recipient will the discount code in the subject line.

When you’re creating Memorial Day subject lines, don’t hesitate to try out many different things and see what works.

Not sure which subject line to pick? How about two at the same time?

Omnisend allows online marketers send emails with A/B testing with two different subject lines. A/B testing allows you to send out two subject lines or two different sender’s names to a small percentage of your recipients so you can see which one worked best.

The one with the highest open rate (or click rate) then gets sent automatically to the rest of your recipients.

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Additional 86 Memorial Day subject lines

Here’s a whole bunch of other subject lines for Memorial day you should consider. For your convenience, we’ve split them into subcategories:

Start of a sale

  • STARTS NOW! Memorial Day flash sale
  • Memorial Day Savings Start NOW!!! Save 20% with Code MEMORIAL20
  • The Countdown to Memorial Day Sale starts now
  • [Your brand name] | Memorial Day Sale Starts Now!
  • Memorial Day Sale Starts Today – Buy 3, Get 3 Free
  • Start Early! Our Huge Memorial Day Sale starts now! use code: mem30
  • Memorial Day Sale: Go Go Go!
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Memorial Day subject lines mentioning discounts and savings

  • Salute-worthy savings in honor of Memorial Day
  • Memorial Day Sale – Additional 50% Off
  • Memorial Weekend Special Sale – Buy 2 Get 3rd 50% Off
  • Free Shipping This Weekend plus Take 20% Off Your Order in Honor of Memorial Day
  • yay for long weekends + big savings!
  • Plan your staycation! Extra 15% off [enter your product] at our Memorial Day Sale
  • 40% Off Everything for Memorial Day
  • Flash Sale: 20% Off Patriotic Fanny Packs!
  • Take 50 Off Memorial Day Sale
  • Memorial Day Weekend – 25% Off Hundreds of Items!
  • Memorial Day Sale! 15% Off All Orders Limited Time
  • Gigantic Memorial Day Sale! + In-Store Only Clearance Deals!
  • Enjoy this special discount to celebrate Memorial Day
  • Hooray! Up to 70% OFF for the Memorial Day
  • Memorial Day Weekend Super Sale | Up to 75% off
  • GET 10% OFF [your product] For Memorial Day. Ends May 28th
  • **BIG Memorial Day Weekend Sale**
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Click here to get your FREE copy of ‘515 High Converting Subject Lines for Any Campaign’

Free shipping

  • Memorial Day Sale: Extra 15% off + Free Shipping!
  • Celebrate Memorial Day with free shipping on all orders
  • Free Shipping Now Through Monday
  • FREE U.S. SHIPPING…all Memorial Weekend!!
  • Memorial Day Savings on Select Items! – FREE Shipping on Orders $40+
  • Memorial Day Exclusive! Today Only – Free Shipping On All Order
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Memorial Day subject lines with emojis

  • ☺️ ⛵️ MEMORIAL DAY SALE 15% OFF SITEWIDE
  • ❤️ MEMORIAL DAY FLASH SALE! ❤️
  • 🍗 Ideas for your Memorial Day BBQ 🍔
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Memorial Day subject lines with last-minute reminders/urgency

  • Ends Tonight: 40-60% off EVERYTHING!
  • Our Sale Ends Memorial Day (Only A Few Days Left)
  • Memorial Day Sale! Save Up To 70%
  • Memorial Day Sale! Up to 75% off select items
  • Last day for this Memorial Day sale
  • Don’t Forget! Up To 65% off During Our Memorial Day Sale
  • LAST CALL for Memorial Day Deals!
  • Last chance: Memorial Day sale
  • BIG Memorial Day Sale- 30% OFF ENDS MONDAY!
  • Happy Memorial Day! LAST CHANCE Sale ends TODAY!
  • Final Hours on the Memorial Day Sale!
  • Memorial Day Weekend Sale starts now! New Arrivals going fast…… use code: mem30
  • IT’S ALMOST OVER! | 50% Off Memorial Day Sale Ends Tonight! Coupon: MEMORIAL
  • Last Chance to Kick your Summer off with Memorial Day Savings!
  • Hurry – Memorial Day Sale and Free Shipping End Today!
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Memorial Day subject lines related to BBQ & grilling

  • Plan a Memorial Day BBQ in just minutes
  • Chill, Grill & SHOP! 50% Off ALL Dresses & Rompers!
  • An inspiration for your Memorial Day BBQ
  • Open this email if you like 1) Hot dogs 2) Baseball 3) Savings
  • Grilling Secrets from the Pros – Plus red, white, and blueberry desserts
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Other Memorial Day subject lines

  • Our favorite Memorial Day essential is…
  • Knock Knock. It’s Memorial Day Doorbusters
  • Plans for Memorial Day?
  • STEP OUT FLY AND SAVE $$$ FOR MEMORIAL!
  • Happy Memorial Day Sitewide Sale
  • It’s our Memorial Day Big Deal
  • Red, White, & NEW!
  • MEMORIAL SALE
  • Sun’s out, sale’s (back) on
  • Memorial Day Weekend is here… Handy punch list to open up the Lakehouse
  • Exclusive Online Preview! Memorial Day Sale & Clearance
  • Memorial Day Weekend SALE [Exclusive DEAL]
  • Shop the Memorial Day sale and save
  • Get ready for Memorial Day! Grab your beach towels, luggage, and more NOW
  • How to Host the Perfect Memorial Day Party
  • Enormous Memorial Day Sale!
  • Memorial Blow-Out Sale
  • Memorial Day Giveaway!
  • Memorial Day – A time to REMEMBER
  • ***GLAM MEMORIAL DAY FLASH SALE***
  • Memorial day sale this week only
  • www.yourdomain.com – Memorial Day Weekend Sale (Omnisend: replace the domain with your store’s address)
  • Shop our Memorial Day sale
  • Memorial Pick
  • Memorial Weekend Nostalgic Sale!
  • Our Savings celebration is a blast
  • Special Memorial Day alert
  • Graduation Gift Deals, Tips For Memorable Graduation Photos‏
  • America’s Pastime on the Memorial Day
  • Since it’s Memorial Day weekend…
  • The Perfect Memorial Day Weekend
  • Celebrate the Memorial Day like never before
  • Memorial Day Event at [your business name]!

Looking for more email subject line ideas?

Cool, you made it to the end!

Thanks for checking out this list of Memorial Day subject lines that you can use as an inspiration to increase email open rate.

If you’re looking for more ideas on how to make those subject lines more compelling, read our comprehensive guide on the best spring lines ideas.

Even though the other spring holidays have passed, the blog post still contains tons of valuable tips, ideas, and inspiration.

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Get the ultimate list of 515 High-Converting Subject Lines (that will superpower your next campaign)!

Jam-packed with top subject lines for your next campaigns, including: Black Friday, Christmas, Father’s Day, Mother’s Day, Spring, Memorial Day, Valentine’s Day, and much more!

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