Prerequisites
Proposal
Can the line between each email be thicker, or have more spacing between them or have an alternating background colour for each email in the inbox.
It is very eacy to click on the wrong email especially if they have all been opened.
Motivation and context
Its not great for people with visual impairments. Or if you are skimming through emails it is very easy to delete the wrong messsage. PLEASE PLEASE have a look and see if you can make it clearer.
Thanks