[leonardteo]

> Users can fail to configure mailto links to point at their preferred email client irrespective of it being web-based or native. (Unless it is the default for the platform I guess)

That's more the issue. It's just misconfiguration and users who are oblivious to that setting. In the past, I don't believe that Gmail prompts you to make it your default handler, and from the number of support requests we received due to this issue, it's clear that a good number of users do not have their mailto handlers configured.

Cheers!