I would love to be able to enable and disable accounts in the same way we do it for the native app. Sometimes I have my wife's email that by default is off, but when we travel I switch it on for her to check her emails.
Also when on holidays I would hide my work email. (not just notifications but all folders).
Lloyd, that's not a real solution only a workaround. For myself I have a lot of emails from an old work email sitting on my phone which I can't extract but can't delete either. I've set it to not sync and just sit there until some solution or alternative mail application comes along :)
Lloyd F. Tennison commented
Even easier. change the sync to Never. Works perfectly. Then turn it back on when you feel like it.