Your message. Your email list.
(The two most critical components
of email marketing.)
While there are other considerations, your marketing message and your email list can make or break your email campaign.
Of course, creating an email campaign is only part of your overall promotion. When your email presents an offer, make sure there's a corresponding landing page on your website that explains your offer.
Using an email tracking system, you can see, in real time, who is opening your emails. It's a cheap thrill–especially when you consider it costs only pennies per recipient to reach them through email.