So I have a Mailgun account and I ended up using that for my email SMTP setup. The current Email / SMS wiki was a convulated mess and I’ve gone and added section headers and updated some of the documentation. Here it is: Sms and Email Notification Howtos - OpenEMR Project Wiki
I also added a section for configuring OpenEMR with Mailgun and have verified it is working correctly in case anyone is wanting to setup email sending for the OpenEMR (with or w/o docker). Mailgun pricing is $1/1000 emails so not that expensive. I’m on a grandfathered free tier plan but unfortunately they don’t offer that anymore.
Ken has a post on the forum on how to do things with GMAIL but gmail is deprecating that functionality as of May 2022 and moving to an OAUTH2 flow for mail authentication. GMAIL volume is limited pretty heavily anyways so I wouldn’t recommend people go that route anyways.