Time and again, my clients are always curious about open rates and how to increase them.

Here is an eMarketer chart sourced from MailerMailer detailing worldwide open rates.

Email open rates worldwide

We all know that shorter subject lines perform better than longer ones, but how well?

In this study, subject lines of less than 35 characters yielded an average open rate
of 19.6% and a 3.1% average click rate. E-mails with subject lines of
35 or more characters drew average open rates of 14.8% and average
click rates of 1.9%.

Email may not be as sexy as other digital marketing tactics, but it still works well if you do it well.