We all get a lot of email — on average more than 120 per day. An informative email subject line can make a big difference for a person deciding whether or not to open an email. If your subject line is vague, you run the risk of the recipient ignoring your email or struggling to search and understand the point of the email. To help persuade a recipient to open your email, you want to make sure the subject line is clear, direct, and lets the recipient know what the email pertains to.
Roughly 50 percent of all email is read on a mobile device, which may show only half of the 60 characters from the subject line in a typical desktop mail client, so try to summarize your email in just a few words.
To learn more about tips on email etiquette, please visit: https://www.inc.com/business-insider/email-etiquette-rules.html