Keep picking losers? Send winner emails with A/B testing
Send winner emails with A/B testing
![ab-testing](https://go.mailup.com/hs-fs/hubfs/Ebook/cover/en/ab-testing.jpg?height=2000&name=ab-testing.jpg)
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Testing is the key to better results: start now
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Subject, call to action, copy, layout: all can be optimized
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Always test one and only one variable at a time
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Challenge your colleagues on who picks the winner
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Improve your performance
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Always choose the best option
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