When did they switch from forcing all employees to use Yahoo Mail? When I left in 2015, they had disabled POP for internal mail, so we were forced to use the actual Yahoo Mail website.

> forced to use the actual Yahoo Mail website

I left in 2016 and in practice we just didn't use email at all because it was so painful to use.

I heard from a friend internal YMail would have ads too because the YMail team needed to test the ad product of YMail... which is kind of ... eh.

I had to communicate with sales constantly (worked on the front-page ads team), so email was essential, unfortunately.

What kind of work did you do that didn’t require email?

We mostly just used Slack/HipChat instead.

It's clearly (b) from the context.

I don't know about Yahoo, but in other organizations I've seen employees using gmail, for work, because it's more convenient than the corporate/enterprise email platform.

Sure but it's usually against corporate policy and reason to fire the person. This has happened in companies I have worked in the past. People take print outs and take them outside office. This is against company policy for confidential documents).

GP clearly says "gmail, for work".

I think a vast majority of companies would fire (at least, call it out as against policy) if you just went ahead and used gmail for work emails because the official one is crappy.

Aol, at least, migrated their corporate email to gmail several years ago. Before that, it was exchange.