Since Brevo allows it, I presume there is no problem with adding a new email to an existing automation. Yet, here I am asking because I want to know it’s ok and I won’t mess up the automation for those already in it. 
Thank you.
Hi @appcrazee , thanks for posting!
What do you mean by « adding a new email to an existing automation »:
- some contacts have already entered the workflow
- one moment later, you want to add another contact?
If yes, then absolutely, it is not a problem at all, automations are designed to handle this kind of case