[freedomben]

There are definitely sites that don't work in Firefox, although they are pretty far and few between.

Mailgun is one of the worst offenders. when I mentioned to their support that auth among other things was broken in Firefox, their response was "use chrome"

[djbusby]

I heard "avoid mailgun"

[freedomben]

Yes that is good advice. I wouldn't use Mailgun again if I was starting from scratch today. The email sending infra is pretty solid, but their web UI is really fragile and routinely has outages. And of course, does not work in Firefox.