25 holiday email subject lines that practically beg to be opened

If there’s ever a time to have fun with your email marketing, it’s the holidays.

It’s when inboxes are buzzing, shoppers are hunting for deals, and brands are pulling out their punniest, most personality-packed content of the year.

So grab a mince pie, hum along to “Rockin’ Around the Christmas Tree,” and get ready to sprinkle a little joy (and strategy) into your next send.

These are 25 subject lines you can steal, swipe, or tweak to fit your brand - all proven to catch attention and drive clicks.

⚡ First, a quick reminder

Every great subject line sparks one of three emotions:

💥 FOMO - fear of missing out
💫 Excitement - the rush of something fun or new
🧐 Curiosity - the irresistible urge to click and see what’s inside

If your subject line does one (or more) of those things, you’re golden.

🎄 Curiosity-driven subject lines

1. You’ll never guess what’s inside

2. The gift everyone’s secretly hoping for...

3. 3 reasons this one always sells out first

4. Wait until you see what we wrapped up for you

5. The one thing you forgot to add to your list

6. What’s better than socks? This ↓

7. Warning: you might want to keep this for yourself

8. Everyone’s buying this and we see why...

9. This just might be our best idea yet 🎄

10. A little holiday magic just landed ✨

🎅 FOMO-driven subject lines

11. These won’t stick around ‘til Christmas...

12. Last year it sold out in 48 hours 😬

13. The early birds are already shopping

14. Stocking fillers flying out the door

15. Blink and you’ll miss this gift drop

16. Our VIPs get first dibs… that’s you!

17. Just unwrapped (and going fast)

18. Santa’s not the only one on a deadline 🎅

19. Don’t be the one still shopping on Dec 23rd...

20. Final few gifts before we shut the doors

🎉 Excitement-driven subject lines

21. Our most festive collection EVER

22. Gifting just got ridiculously good

23. It’s here! The Christmas edit is live 🎁

24. The Christmas countdown starts NOW

25. Your merry little inbox moment awaits ✨

Ready to keep the momentum going?

These subject lines are just the beginning. Inside Clicks & Flows, we don’t just hand you ideas - we build, test, and optimise every flow so your emails make money while you sleep.

If you’re ready to start the new year with your Klaviyo fully dialled in, it’s time to chat.