Email is a force to be reckoned with for your business. A well-coordinated email campaign can quickly build momentum for your product or service, and recipients favor it. Creativity is critical to keeping your emails in the inbox where they belong. However, being in the inbox itself is one thing and being opened is another. To share the information you want to communicate, you’ll need a sales email subject line that sells.
Source: GrowthHackers Trending http://growthhackers.com/articles/8-sales-email-subject-lines-that-get-results