The art of converting email subject lines: There are a couple of websites that provide insights for selecting good email subject lines. For example, Litmus’ Email Zeitgeist monitors subject lines and tracks ongoing trends; Mailchimp’s Subject Line Data provides some details about what works and doesn’t work in subject lines; CampaignMonitor suggests using symbols in some cases; and Adestra provides a Subject Line Analysis Report (PDF) from the study of 2.2 billion emails. A lot of data to go through, with a lot of useful tips to get better and smarter with your subject lines.
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