Write a compelling subject line. The subject of your email will be the first thing that people will see when viewing it. Because of the immense amount of spam that exists, it's important that you draw the recipient in enough so that they open the message. The subject line should invite the reader to some benefit or include a sense of urgency which requires action. Avoid cliche marketing terminology like "act now" or "free limited offer" as these subject lines can make recipients feel suspicious and turned off. Your subject line should be 50 characters or less.
According to recent research from Radicati Group, worldwide email volume will reach 207 billion messages this year—more than half of those for business. The typical business user receives well over 100 emails each day. Email marketers are challenged not only to make their messages stand out in that deluge, but also to provide relevant, actionable information to targeted recipients.