AWeber has a strict and comprehensive anti-spam policy in order to keep its deliverability rates high. Upon signing up for an AWeber account, you must certify that your list is permission-based and meets the company’s anti-spam standards. In addition, before your first mailing, you will need to send a subscription confirmation to all your subscribers. Anyone who doesn’t confirm their subscription cannot be included on your list. (This is known as confirmed opt-in.) AWeber will sometimes make exceptions for lists which have already been through that process and have a proven history with another ESP.
The main weakness I see is the price-point where small companies are concerned. If you don’t need all of AWeber’s bells and whistles, there’s no reason to pay for them. You’ll also want to make certain that if you are trying to cancel your account, you’re not just accidentally suspending it. This is especially important where the free trial is concerned, as AWeber requires your credit card info.
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.