To make your email copy more interesting, you can borrow one clever tactic from from soap operas and hit T.V. shows by leaving a cliffhanger at the end of your email. Either ask a question and promise to tell the answer in the next email, or hint at a benefit they’ll get if they read the next email. This will condition your subscribers to to expect your next email messages and look forward to opening them. There are 9 other ways to write killer email copy.