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case-study:-big-boost-from-subject-line-testing

Case Study: Big Boost from Subject Line Testing

Lots of email marketers test subject lines, but the key to long-term success is testing formulas rather than specific copy. In this case study, the winning subject line formula generated an open rate lift of 70% and a lift of 56% in click-through rate. Best of all, because we tested formulas instead of copy, they’ll be able to roll this out to all future daily…

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