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Email subject line tester

Boost your email open rates: analyze and improve your subject lines before sending your next campaign.

Subject lines you'll want to steal

Looking for inspiration for your next email campaign? Try these high-scoring subject lines for promotional and automated emails to give your campaigns the best chance of success.

Suggested subject lines
Our score
Don't miss out our BOGO sale!
92% our score
Copy Copied
Black Sale. New arrivals 30% off!
100% our score
Copy Copied
💥 25% Black Friday Code: FRIDAY
92% our score
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Black Friday is back!🔥 Shop now!
92% our score
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🚨 BLACK SALE! Bestsellers 45% off!
92% our score
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Your 50% off gift is waiting
100% our score
Copy Copied
Breaking: 40% off ending at midnight!
100% our score
Copy Copied
Order Now for Delivery by Christmas!
92% our score
Copy Copied
Ending soon: last-minute delivery
92% our score
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[Product] back in stock this Saturday!
92% our score
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Treat your Valentine with 50% off
100% our score
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50% Off Valentine's Coupon Expires Soon
100% our score
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[Product] is much better than chocolate
92% our score
Copy Copied
Be Our Valentine (& Get Free Shipping)
83% our score
Copy Copied
Gifts for an epic solo Valentine's
83% our score
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Mother’s Day 30% Off Sale
92% our score
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A Gift for Mom (& You)!
92% our score
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Reminder: Mothers Love [Your Product]!
92% our score
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Celebrate Mother’s Day with us!
92% our score
Copy Copied
3 Mother’s Day Gifts She'll Love
92% our score
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Father's Day weekend special: 25% off
100% our score
Copy Copied
Give something special this Father's Day
92% our score
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3 Father’s Day Gift Ideas
92% our score
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Father’s Day Gifts Under $50
92% our score
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A gift for Dad (plus 20% off)
92% our score
Copy Copied
The Perfect 4th of July Weekend
100% our score
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Independence Day Special Weekend Sale
92% our score
Copy Copied
Go 4th in Red, White, & New Shoes
92% our score
Copy Copied
Shop our 4th of July sale
92% our score
Copy Copied
Ending Soon: 30% Off Independence Day Sale
83% our score
Copy Copied
Still shopping? (Take 20% off)
100% our score
Copy Copied
Your items are selling quickly
92% our score
Copy Copied
Your cart is waiting (and lonely)
92% our score
Copy Copied
Did you forget something?
92% our score
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Complete your order now
92% our score
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Welcome! (Important info inside)
92% our score
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Welcome! Enjoy 20% off
92% our score
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Thanks for subscribing! (psst, open me)
83% our score
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You're one of us now!
92% our score
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Welcome info & your free gift
92% our score
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We miss you! Have £10 on us
92% our score
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We miss you, [Name]
83% our score
Copy Copied
Did you miss these new products?
92% our score
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Would you like a 20% discount?
100% our score
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Treat yourself. You deserve it.
92% our score
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🎁 Don't miss our holiday sale
83% our score
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Hurry, up to 80% off!
100% our score
Copy Copied
🎄Christmas sale is now on ✨
92% our score
Copy Copied
There's still time to save!
92% our score
Copy Copied
Today only, 50% off site wide!
100% our score
Copy Copied
New product arrivals in stock
92% our score
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New year, new goodies!
92% our score
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The new winter collection is live!
92% our score
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Autumn's on the way – see what’s new
83% our score
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Don't miss the new collection
92% our score
Copy Copied
Expires at Midnight – Exclusive Offer!
92% our score
Copy Copied
LAST DAY - up to 70% Off
83% our score
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End of summer BLOW OUT!
83% our score
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Hurry: last minute free delivery
92% our score
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Only 2 days left! 50% off!
92% our score
Copy Copied
Cyber Monday Restock - Buy NOW
92% our score
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Cyber Monday Flash Sale 30% off
92% our score
Copy Copied
💻 Cyber Monday Sale—Styles from $29
92% our score
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FINAL HOURS: Get 25% off for Cyber Monday!
83% our score
Copy Copied
Cyber Monday: Get up to 80% OFF
92% our score
Copy Copied
Get Thanksgiving Essentials with 20% off
100% our score
Copy Copied
Happy Thanksgiving! 💕 Save 30% OFF!
92% our score
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💥60% OFF [bestseller]💥THANKSGIVING DAY SPECIAL ONLY💥
92% our score
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Limited time sale is happening now!
92% our score
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Stock up for Thanksgiving. 20% OFF
100% our score
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Tomorrow Only: Giving Tuesday Sale
92% our score
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Hurry! Giving Tuesday Sale Ends Soon
92% our score
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New deals for Giving Tuesday!
92% our score
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Get involved this Giving Tuesday!
92% our score
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Give back on Giving Tuesday!
83% our score
Copy Copied
More subject lines suggestions

Why test your subject lines?

35%

of customers open emails based solely on the subject line. A great subject line makes or breaks whether your campaign even gets opened.

69%

of customers mark an email as spam based on the subject line. Having too many emails marked as spam affects overall deliverability and sender reputation.

59%

of customers say marketing emails influence their purchase decisions. Without an attention-grabbing subject line, a large share of such emails get lost in the inboxes.

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