Currently when I connect to my Gmail account the embedded browser window opens to enter rgw 2 factor, but it does not detect my FIDO U2F Yubikey token that I use to connect to Google.

Eventually I want to have only hardware tokens for authentications with Gmail since Google recently started to support this option.

Would be good if Airmail supports it too, as they are more protected against even sophisticated fishing. Something that one wants to care about when accessing e-mail due to the fact that a lot of other accounts link to it.