What does the company do well? I only used Campaign Monitor really for basic email marketing campaigns... and they do make it easy! Adding new email lists, adding a new email template (and editing that email template) are all super easy and straightforward tasks. Can't really complain!
What does the company not do well? I wish Campaign Monitor made uploading and managing suppression/black lists easier. Right now it is kind of a buried feature. Also uploading and managing your templates in Campaign monitor can be difficult as well. I wish there was a way I could make a quick edit to the CSS or HTML of one of my templates while editing an email before a send.
What do you wish you had known about the company before using? Nothing, the details surrounding the service were very well communicated.