Email subject lines are ridiculously important, like stupidly so. They not only have a massive impact on the open rate of your email, but also make readers more or less likely to click on links within the email itself. They frame people’s entire perspective and so the difference between a good and great email subject line is huge.
If you’ve ever had to deal with church members seemingly stating that they “didn’t know” about an event, even though you emailed them multiple times. It’s probably because your subject lines missed the mark.