building up your own email list
The strength of your business lies in its contacts. The same is true of email marketing. That doesn't mean to say that it's necessarily about quantity either, what's equally important is having an email list that finds your content relevant and interesting. You could have a million contacts but if you're content isn't what your contacts are looking for your email campaigns will ultimately fail.
Chances are if you obtain contact details in person (for example at a meeting, a conference, a tradeshow etc.) then people will be interested in what you have to offer, but remember contacts have to explicitly request to hear more from you - apart from being illegal, purchased contact list are always ineffective since the recipients have no interest in hearing from you and they'll find your uninvited messages intrusive, which will actually hurt your business.
Aside from being a great CRM and Email marketing tool, Intouchcrm gives you the option to place sign up forms on your website, a great way to build up your own email list. And once you have the contact details you can work on providing relevant, tempting content to those people who actually want it!
Why not sign up for a free trial of Intouchcrm? It's fully functional so you can try out the sign up forms for yourself and even send a campaign completely free. It's not often that you get money for nothing, but with Intouchcrm you do!