Rated 4 out of 5 stars

Very good idea and nice set of features. Unfortunately, this add-on is not customizable yet, so you are stuck with a (too short) preview of latest mails, a list of frequent correspondants, a short list of drafts, disk space used and some other stats. In my case, I only care for an aggregated list of all the mails in the account's different folders, but I cannot make it bigger. It would be fairly simple to make the different panels optionnal, and make the remaining panels use up all the available space. Also, it doesn't include the mails in the subfolders in the summaries, and there is (yet) no option for this.

This review is for a previous version of the add-on (2.1.3).