Reaching out to a huge number of contacts promptly and effectively is one of the USPs of email marketing. The holiday season is a big testimony to that. Email marketers are at their busiest this time of the year sending promotional emails to as many contacts as possible. If you're an email marketer, you already know how email marketing software makes your life easier during these times. That said, you must look after it well for proper returns, by not feeding unhealthy mailing lists.