Comment by tidepod12

This is probably true, but such a laughably small number of people use Workmail that I doubt it has any material difference to AWS's reported numbers, so while they might not reflect the true AWS marketshare sans-Workmail, it's probably still in the same ballpark. The reason people bring it up in regards to Azure is because it does likely artificially inflate Azure's reported numbers a material amount and makes them harder to trust.