I think both are author timezones. Mautic doest handle contact timezone as far as I know…
If you saw it in my video, that must have been a momment of confusion from me
But plz test it out, maybe it is true.
I tested it. The campaign emails were sent according to contact timezone.
I tested it because I wanted to be sure, that my reminder emails to webinars or due dates for offers are ok (4 hours until the start of webinar, 20 minutes, 10 minutes after…).
With campaign emails would not work. I am in Germany, I have my timezone set in Mautic as for Germany and my audience is in Romania (+1 hour difference). I had to be sure.