Your subject line is the key to getting your readers to open your emails. Without an eye-catching subject line, all your hard work is bound to end up in the trash bin. Of course, guessing what the best email subject lines are can be almost impossible. Luckily, lots of brands test this all the time and research has found that there are certain keywords that just stand out among the rest. If you start incorporating these killer words in your email marketing plan, you’re going to start seeing from increasing open rates.

Of course, we always say it’s best to test! Start by replacing some words in your upcoming email campaigns with these and doing an A/B subject line split test to see which one performs better. You can judge them for yourself!

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