It's relevant for those who do not care about such delineations and find it more efficient or so. I like having the unified inbox for several reasons such as being able to get see a quick overview of my personal/university/work accounts and act relatively to them. Sometimes though I'll switch into one account alone.
i sort of get it, but I switch the tone of how I respond depending on which of my accounts the email is received. Its seems more troublesome to look through them all and try to figure out after the fact.
