Create a sense of urgency or scarcity

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Urgency and scarcity drive immediate action, making recipients feel like they might be missing out if they don’t open your email right away. Emails with an urgency-related subject line can have up to a 22% higher open rate.

Use countdowns, deadlines, and phrases like “hurry up” or “limited time” to create a sense of urgency. However, be careful not to overdo it, as too much urgency can make your emails feel spammy.

Examples :

“Last Hours: Save 50% Today Only!”
“Last chance to claim your reward!”
4. Use numbers, lists and statistics
Using numbers in your subject line helps set clear expectations and self employed data make the content more engaging. Lists give your recipients a quick preview of what they’ll get when they open your email. Subject lines with numbers have a 15% higher open rate.

Use odd numbers in subject lines to grab more attention. “5” tends to perform better than “4” or “6” because it’s unexpected and memorable.

Examples :

“5 Ways to Boost Your Sales Today”
“Top 10 Holiday Destinations Not to Be Missed”
5. Ask a question
Subject lines that ask a question create curiosity and encourage the reader to open the email to get the answer. Question-based subject lines have a 10-15% higher engagement rate.

Make sure your question is relevant to the content of the email. It should make the recipient want to open the email to satisfy their curiosity.

Examples :