Ads display make so many http requests, use so much javascript that even on a fast PC email App is unresponsive most of the time
Most of the time you cannot even type, because of the amount of resources and HTTP requests taken by the ads. Everyone in our company was using Yahoo mail, it was the suggested mail app, but now we are being told to switch to Gmail as a mean to address the unresponsive yahoo online mail app. It is so disappointing to see that kind of self-sabotage by a company that was once upon a time a user oriented company.
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Ozzie Osband commented
And you wonder why I swap back to Yahoomail Basic so often...