Several of our customers have simply signed up with the paid HIPAA- compliant business gmail account and used it in a separate browser or browser window from their OpenEMR. And of course multiple other compliant email services are on offer so one has options besides google.
This forum’s search tool (magnifying glass at top right of screen) is very useful. I searched on ‘hipaa sms’ and got several results. You might try it for other related queries.
Here’s one result that seems very relevant to your post:
Best of luck on your quest!
- Harley