Emails with subject lines of 6-10 words have the highest open rates, yet most emails sent by marketers have subject lines of 11-15 words, according to a recent report from Retention Science.

For the emails analyzed, those with 6-10 word subject lines had a 21% open rate. Those with subject lines containing five or fewer words ranked second with a 16% open rate, and those with 11-15 words had a 14% open rate.

Despite the effectiveness of shorter subject lines, most emails examined (52%) had subject lines of 11-15 words.

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ABOUT THE AUTHOR
image of Ayaz Nanji

Ayaz Nanji is an independent digital strategist and a co-founder of ICW Content, a marketing agency specializing in content creation for brands and businesses. He is also a research writer for MarketingProfs. He has worked for Google/YouTube, the Travel Channel, AOL, and the New York Times.

LinkedIn: Ayaz Nanji

Twitter: @ayaznanji