You see, the people on your email list are your best customers. They have visited your site and found it interesting enough to subscribe for more content. For that reason alone, they are much more likely to listen to any offers you may send them (affiliate promotions, product sales, discount coupons, etc.). So, having a large email list can actually be quite profitable, which is why bloggers and website owners hold them in such high regard.
We’ve changed email marketing from iContact to MailChimp and, just now, Aweber. We changed from iContact to MailChimp to cut costs. We then switched to Aweber because Mailchimp will not allow you to start an Autoresponder series on an imported list PLUS, as you mentioned, Aweber has much more robust measuring/management tools. However, people should be aware that Aweber requires imported subscribers to opt-in all over again.
An email campaign is a powerful way of reaching your audience directly. Never miss a chance to collect email addresses and target your subscribers with content and offers that are relevant to them. Readers usually skim instead of reading the entire message. Keep your email clear, concise, and scannable. Include a call to action so your readers can understand what you want them to do. A/B test different headlines, images, copy, and subject lines to see what works best for your audience. And, always test your campaign before sending it.