Tags: Google, Gmail

my biggest complaint Gmail complaint 

I'm going through my 4,000+ emails, looking for ones that can be deleted.

Let's say I:
click on an email. read it.
decide I want to keep it.
click to go back to my inbox.
get a text, read it.
avert my attention back to my inbox.
Which email did I just read? I can't remember?

I wish it highlight the last email I was reading (Outlook does this).