Good salespeople know that the way to start a meaningful conversation with a prospect is with a question. That’s true for your e-mail marketing, too. Punctuation in your subject line can boost open rates by 9% — but a question mark can outperform an exclamation point by well over 40%. So as you consider the all-important subject lines that help your recipients decide whether to click, lead with a question — one that will make them think you have the answer.
