DO NOT STOP USING EXPLORER. My work laptop uses it for it's set up. Don't want to switch between browsers.
My work laptop automatically uses explorer. I don't want to have a set of windows open in Explorer and then have another set in Mozilla or Chrome just because you want to change. I work for a global company. I can't imagine that we're the only ones like this. Don't stop using Explorer. I used Chrome on my personal computer for everything and I hate Bing. Be happy with that.

A list of our supported web browsers can be found here:
https://help.yahoo.com/kb/new-mail/fix-problems-mail-sln28075.html?impressions=true
Thank you!
Mail Support
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Michael Damien commented
Can you please stop displaying a message every time I access my email that that says my browser is no longer supported? I am aware of that and I have no intentions of using a different browser. The browser I use works just fine. Thank you.