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Email subject line tester

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

Need inspiration? Try our AI subject line generator. Create with AI

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
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💥 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
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Breaking: 40% off ending at midnight!
100% our score
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Order Now for Delivery by Christmas!
92% our score
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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
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Be Our Valentine (& Get Free Shipping)
83% our score
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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
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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
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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
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The Perfect 4th of July Weekend
100% our score
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Independence Day Special Weekend Sale
92% our score
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Go 4th in Red, White, & New Shoes
92% our score
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Shop our 4th of July sale
92% our score
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Ending Soon: 30% Off Independence Day Sale
83% our score
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Still shopping? (Take 20% off)
100% our score
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Your items are selling quickly
92% our score
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Your cart is waiting (and lonely)
92% our score
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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
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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
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🎄Christmas sale is now on ✨
92% our score
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There's still time to save!
92% our score
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Today only, 50% off site wide!
100% our score
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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
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Expires at Midnight – Exclusive Offer!
92% our score
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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
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Cyber Monday Restock - Buy NOW
92% our score
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Cyber Monday Flash Sale 30% off
92% our score
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💻 Cyber Monday Sale—Styles from $29
92% our score
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FINAL HOURS: Get 25% off for Cyber Monday!
83% our score
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Cyber Monday: Get up to 80% OFF
92% our score
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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
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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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