Yahoo forced to acknowledge Yahoo Mail problems in worst failure

After a public UI and technical failure with its October redesign, Yahoo Mail miraculously gets worse as it goes. And then, Yahoo acknowledges delivery failures stretching back to November 25.

Emails not delivering to Yahoo (and probably others?)

Yahoo forced to acknowledge Yahoo Mail problems in worst failure

Marissa Mayer Regrets Yahoo Acquiring Tumblr Instead of Netflix

Don't Like the New Look of Yahoo Mail? Switch it Back

Postmaster @ Yahoo & AOL

Yahoo's troubled advertising business

Yahoo Mail

Why am I being shamed for 'still' having a Yahoo email address

4 Biggest Reasons Why Yahoo! Failed – Feedough

Legitimate request from Yahoo Mail? : r/yahoo

Verizon sells Yahoo and AOL, admits billion-dollar mistake - Protocol