I bought it just for the unsubscribe feature and because GoodByEmail is really the only email cleaning tool that literally don't ever get to see my emails (all other cleaners do, because they use our credentials/tokens), but I ended up finding the most valuable feature to be the "Top Offenders table", which shows the contacts that are consuming most inbox storage space. Interesting that most of them never got picked by filters on my email client. I've never seen this feature in any email cleaner, super innovative.
