Remember scroll position when switching emails
When you are reading a long email that you have to scroll to read, e.g. newsletters, if you select a different email to read and then select another email you'd opened previously, the scroll position is reset to the top of the message. It would be really helpful to preserve the scroll position for a given message (at least until it has been archived/deleted) so you could return to it later and resume reading where you left off.
Kelly Fox shared this idea