Exactly, the correct solution is to utilize a transactional mail system for in-application sending that's not tied to your physical mail servers used for person

Exactly, the correct solution is to utilize a transactional mail system for in-application sending that's not tied to your physical mail servers used for personal/business email. Amazon SES, MailGun, SendGrid, etc are all excellent tools to use if you do not wish to run/maintain your own system.