The usability of most of the site is actually not bad; I even like the design look and feel. However, the signup process is where I had (and am still having) trouble with. Just simply getting a reply from them on anything takes hours and hours, but when you look search usability and mailchimp.com, they are all kinds of busy writing blogs about their mobile usability testing and how great they are. So they are so focused on their mobile they forgot that the #1 focus should be getting new users fast, and keeping them with good support… what a JOKE! Mailchimp.com is usability and customer support FAIL!
Now, you can automatically send highly relevant emails encouraging them to buy the product or service they were considering. Customers who received multiple abandoned shopping cart emails are 2.4 times more likely to complete the purchase than those who receive only one followup email, according to Experian. Try sending the first message one day after, a second message 48 hours after, and possibly a third message within three or four days of abandonment.