Email marketing is the practice of sending various types of content to a list of subscribers via email. This content can serve to generate website traffic, leads, or even product signups for a business. It's important that an email campaign's recipients have personally opted in to receive this content, and that each newsletter offers something of value to them.
I recently had my MailChimp account suspended. One of my sites is in the ‘make money online’ space. It’s a completely legitimate website, but apparently if your emails contain keywords they don’t like, they will suspend you. I would not recommend using them. Contacting support I just get form responses that are completely unhelpful. There’s no phone support- just account termination. Really bad experience. Luckily, this is a very new site- but imagine if you have thousands of emails and they just shut you down without ANY recourse.
Email marketing can be tough at times -- I'm right there with you. But by sending compelling offers to the right target segments and paying attention to the little details that go into an email, you can increase the opens clicks in your emails and generate more leads. (And learn more about which email marketing metrics to track -- and how -- here.)