This platform is the most unsatisfied online autoresponder for businesses since it is the most complete and easiest to use. I have used this platform and I have verified that if you can create a direct contact with the buyers. For this reason I recommend this platform. This platform sends emails automatically avoiding that we are all day on a computer, this tool allows you to configure personalized messages. It allows creating and programming mailings. With this platform, it prevents emails from reaching the span or spam folder of users.
I don’t plan to use Aweber with my new blog – at least not for the first few months, but thanks for the review. I might go with Mailchimp (I used to use it before, plus Mailchimp offers lot more features now – segmenting, reporting etc) or perhaps Benchmark email (heard about this service recently, still considering it), and switch over the Aweber once I have setup at least one source of income 😀

Pros: AWeber provides a simple interface which is easy to manage, and they also provide a large array of tutorials to help make the learning process a bit easier. The templates they provide are also of grat value as well. Tracking subscriber behavior and data is a huge bonus to help improve your conversions. A free 30-day trial is always a huge bonus as well.
Then you can do it all again. AWeber lets you build as many lists as you want, each with their own emails, forms, templates, subscribers, and stats. You can switch between lists from the menu in AWeber's top toolbar—or get a quick glance at the stats on all of your lists from your dashboard. You can also quickly send a new email anytime from the prominent Create a Message button in the dashboard.

List Segmentation: I would have to say the number one feature is the ability to tag and segment subscribers based on their behavior. This allows you to follow up with leads based on the specific actions they take (or don’t take). For example can tag links inside emails so when your subscriber click on it you will know. You will have the power to create list segments based on any field in your database.
However, Mailchimp offers a much bigger selection of integrations. It’s seen, for whatever reason, as more of an industry standard tool than Aweber, so some web applications - key examples being Squarespace and Shopify - will offer Mailchimp as a default ‘works out of the box’ e-marketing option. That's not to say that you can't use Aweber with these products, but there will be a bit more configuration required.
Using Aweber, you can create ‘goals’ or combine automation rules with tagging to make autoresponders behave in quite funky ways...but if you want to make use of autoresponders in really advanced ways, you'll probably need to look at other products, particularly Getresponse, which provides 'marketing automation' functionality that hooks up to a built-in CRM.
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