We know how tricky writing subject lines can be. We “professors” at Revinate University have been hard at work to uncover subject line insights to help inspire your next campaigns.

Each month, we’re bringing you the best-performing subject lines achieved by our North American hotel customers from the same time last year. Check out last June’s top five below:

1. Subject line: Two weeks left to save on summer vacations!

Open rate: 25%

Why we love it: Leverages the upcoming season to build a sense of urgency.

2. Subject line: Sip and Savor Savings!

Open rate: 22%

Why we love it: A fun play on words for an F&B promotion.

3. Subject line: FLASH SALE! Book your stay NOW

Open rate: 20%

Why we love it: We always love a good flash sale. “NOW” (in all caps) is a great eye-magnet word, too.

4. Subject line: Last Chance to Book This Suite Summer Deal

Open rate: 18%

Why we love it: Creates urgency to book a suite with a creative play on words.

5. Subject line: Family Comes First on July 4th

Open rate: 17%

Why we love it: Generates enthusiasm for the upcoming family-oriented holiday.

That’s a wrap on the top hotel marketing subject lines for June, based on Revinate’s North American customer data. We’ll be back next month with the top subject lines for July to inspire your next batch of campaigns. Now go on and get writing!