Which email addresses get pulled into MageMail v2/3?
Out of the box, we pull the following email addresses from Magento:
- Order history (including guest orders)
- Newsletter subscribers
We do this on a syncing schedule every 5 or 10 minutes.
We also will pull in the newsletter subscriber status - whether they happen to be unsubscribed or not.
And there is an option to only send to opted-in subscribers you can use as well.