Send Email in BPM to multiple recipients?

Hi all,
Does anyone know the correct way to separate email addresses in the “TO” field on the BPM Send Email node?
I tried using a comma but that doesn’t seem to quite work.

I believe it is a semi-colon

Correct, thank you!

Follow up question, is it safe from a message delivery standpoint to send emails asynchronously? I’m wary of doing that because I don’t want the message to get lost…

My recommendation is to always do async since both sync and async have risks with email sitting in limbo. If you are overly concerned and depending on your email platform, there are some nice ways to monitor the end-to-end email processing.