Email marketing isn’t dead, you may need to just revamp your current campaign. When buyer and seller leads are navigating through their inbox or spam folders, they’re deciding in less than seconds whether an email is worth their time. In fact, one study found 69% of email recipients report email as spam, based on the subject line alone. Email subject lines are a huge component of successful email campaigns. Subject lines, if done correctly, will entice readers to open your emails, not mark them as spam.