The experts at email management service Boomerang have analysed over a quarter of a million emails, and, in doing so, they have discovered that a well-crafted subject line is to key to a successful correspondence with colleagues.

When the subject is four words long, and no mistakes are made, you’re 41% more likely to receive a reply to your email.

But, if you start your subject sentence with a lowercase letter, then don’t expect anyone to message you back any time soon; it’s been dubbed the most off-putting thing you can possibly do in an e-message.

Other than writing something genuinely obnoxious, of course.

This is the worst mistake you can make in a business email, confirm experts