Both AOL and Google had, around the same time, secondary mail interfaces that provided extra features. Google's was Inbox; I've forgotten the name of AOL's. They were quite similar to each other, with each slightly better than the other in some ways. Both sites were slower* to load than AOL's and Google's standard email interfaces. Neither reached the market penetration or current-account conversion management wanted., and those of us who used them were sad to see them go.

* Google eventually added so many features to Gmail that they had to add a progress bar during page load.