I would like to ask for the option to set ProtonMail as my default email app to redirect hyperlinks on Firefox for iOS (both iPhone and iPad). Thank you.
If I'm not mistaken, ProtonMail has more users than a number of the email providers listed under Settings > Mail App. AND it is the largest (and arguably best) of the explicitly privacy-focused email providers. Since privacy is something Mozilla really, REALLY says it cares about, this one would seem a no-brainer.
Alternative approach: Can Firefox not simply "sense" which email programs are available on a particular device and let us pick our preferred default? If this is technologically feasible (you never know with iOS APIs), this would seem a much more sensible and straightforward approach -- one that wouldn't seem to be picking eight particular (and kind of odd) favorities.