If you’re managing a list in the hundreds, thousands or low tens of thousands and you only collect leads through the internet, then there’s no better service than Aweber. Aweber doesn’t really allow you to add leads from offline sources. However, for online lists, Aweber sports the best deliverability ratings on the market. If you’re primarily using online opt-in forms, use Aweber. Your emails will get delivered, opened and clicked on.
Infusionsoft is a fully functional CRM and marketing solution created for small and medium-size businesses. Comparing it to Mailchimp or AWeber is like comparing a Lamborghini to a VW Golf. It provides highly advanced features for list segmentation, lead scoring, and marketing automation. On top of all that, you can integrate all of these features with your optin form using Infusionsoft Tags + OptinMonster.