How to write your Professor… in Brazil

In response to my how to write an email post, one comment provides strong evidence my advice may not carry across international boundaries:

I’m studying in Brazil for a semester and I’m encouraged to start emails with “Hi Flavia” instead of “Professor”. The informality is weird. Professors also end their emails with Hugs, Claudia

And another:

I’ve noticed the familiarity since arriving here, too. It’s quite unsettling to have just met someone – or to be emailing someone you don’t know – and for them to send you ‘kisses’

I’m pretty sure that would get me divorced and sued.