1. Use numbers. Numbers are your email subject line’s best friends.
Extensive A/B tests by email platform Campaign Monitor found subject lines with numbers achieved a 57 percent better open rate than those without.
2. Remember, characters count.
Next, remember real estate for your subject lines is very limited. Desktops usually display about 60 characters and mobile devices about 25 to 30.
3. Use these 10 words that increase open rates: thanks, golden, iPhone, breaking, advice, course, thank you, exclusive, review, top stories
4. Skip these 10 words that decrease open rates: get rid of, secret of, shocking, what you need to know, won’t believe, quickest, aim, call, put, 2 for 1.
5. Do your own A/B testing.
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