[teyc]

Well, less powerful toylike computing devices eventually grow up. I don't know what the transition looks like. Perhaps it will be via phablets. Or it might be a popular iPad accessory or a new kind of dock that got funded through kickstarter. Maybe it is a wireless display and a Bluetooth keyboard combo. Maybe it is a personal shrunk down smart tv that is easily paired with a phone.

The point is eventually they are sufficiently powerful and there is sufficient cloud computing infrastructure around for these device to offload work to. My parents know of no email clients. They have only encountered web mail, and in terms of convenience, it is absolutely great.