Before we get started, here are 10 subject line best practices:

1. Short and sweet is usually better
2. Use personalization where you can
   • Name
   • Previous purchases
   • Any other customer data
3. Use numbers where possible
   • “# must-have items”
   • “# tips to learn x”
   • “How I made $# in # days”
4. Associate the reader with a group they identify with
   • “Calling all marketers”
   • “Top resources for copywriters”
5. Incorporate your brand and tone. i.e. speak in their language
6. Clear is better than clever most of the time, but sometimes you need to have some fun, keep it light, and make the reader curious. Find an appropriate balance.
7. Look through your own inbox. What jumps out at you?
8. Use “you” and “your”
9. The goal of the subject line is to get you to read the preview text. The preview text (combined with the subject line) gets you to open the email.
10. Always be testing! It takes 30 seconds to set up an A/B test. There’s no excuse not to test. It’s a missed opportunity if you don’t.

Now on to the 101 Subject Line ideas! 👇

Promotions and Offers:

1. → you missed this ←
2. PSSSST... this is your last chance
3. Save more on [previously ordered product]
4. You have a new offer available!