7 Tips for Getting More Responses to Your Emails (With Data!)
Boomerang
FreeBeginner
This is the source for the word-count guidance worth knowing before you draft. Boomerang's data, drawn from roughly 40 million emails, shows subject lines of three to four words get the most responses, with response rates declining steadily as the subject line gets longer. Worth reading once so you know the target is not arbitrary.
Subject lines of three to four words (excluding 'Re:'/'Fwd:') get the highest response rate in Boomerang's dataset.
Response rates decline steadily as subject line word count climbs past that range.
A message with no subject line at all gets a response only 14% of the time, so skipping it entirely is the real mistake to avoid.
