The most important step in email marketing is getting the audience to open it. And the subject line is the key. In fact, 35% of emails are opened just because of the subject line. Our subject line tester is based on data from millions of emails. It tests your subject line using 16 key data points including optimal character count, terms that get flagged as spam and how compelling the line is. Never send out an email campaign again until you’ve checked and optimized your subject line using our tester.
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