Well... not everywhere outside the US. I saw it popular in Asia as someone other said, but here in EU I see only gmail, hotmail and outlook, nothing else.
"The EU" is not homogenous at all. Looking at a 500k mailing from one of our customers in the UK, I see ~190k Hotmail addresses, 44k Yahoo addresses, 24k BT addresses, which I believe are still handled by Yahoo as part of their BT-Yahoo! thing. 42k Gmail addresses. 11k AOL. This is fairly typical amongst our customers.
Of course this list is biased - demographics matters a lot in this case. But that's also what tends to blind tech people about Gmail - Gmail for many years was massively overrepresented in the tech world. Yahoo still tends to be in the top 3 most places, and there are plenty of countries where they place well ahead of Gmail.
