MailChimp analyzed over 40 million emails and compared the subject lines from the campaigns with the best open rates (60-80%), and the campaigns with the worst open rates (1-14%).
Have a look at some real examples of the most effective subject lines and some examples of how NOT to write a subject line.
Bottom line: when it comes to email marketing, the best subject lines tell what’s inside, and the worst subject lines sell what’s inside.
Tamara Gielen is an AI strategist, educator, and transformation catalyst. With over two decades of experience at the crossroads of marketing, IT, and innovation, she helps teams and leaders cut through the noise and apply AI in ways that are both smart and human.
Known for her ability to translate complex technology into clear, actionable insights, Tamara empowers people to lead with confidence in an AI-driven world. Whether on stage or in the boardroom, she brings high energy, clarity, and a relentless focus on what actually works.
