Improve your UX and visual design
The new visual design of Yahoo mail is AWFUL. Have a different color icon at the beginning of each email line causes so much visual clutter and makes it impossible to scan your list of emails to see what's going on. Adding a "category designation" like "primary" before each email in your inbox is yet another piece of visual clutter that keeps me from being able to quickly scan and understand my emails. Lastly - since the entire page is almost a single color - there is no clear visual hierarchy happening to help understand where I'm suppose to be on the page. Horrible UX and visual design.
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