Email Subject Line Keywords – What’s Most Effective

Emails with the word “alert” in their subject lines have a 38.1% higher than average open rate and 61.8% higher click rate, according to a recent study by British marketing firm Adestra.The keywords “free delivery” (+50.7% higher open rate, +135.4% click rate) and “bulletin” (+15.8%, +12.7%) also performed very well in the email campaigns analyzed. … Continue reading »