Direct-mail marketing experts have known this for decades: A call to action as a P.S. of a letter increases reader response.
You can adapt this strategy for your emails. 放一个P.S. at the bottom of your email signature—or between your name and contact information with space above and below the P.S.
Use it to ask for referrals, tout a service, or ask for another type of response. You can take another tip from the direct-mail pros by tracking responses and periodically changing your P.S. 消息.