Basic Authentication and Exchange Online – April 2020 Update

We have automated processes that poll IMAP and POP3.  We use both third-party libraries, MAPI, and Outlook 2013 interop for this.  We cannot upgrade Outlook part soon.  I read https://docs.microsoft.com/en-us/microsoft-365/admin/security-and-compliance/enable-modern-authentication?view=o365-worldwidethat modern auth can be enabled in Outlook 2013 by adding registry keys.  Is that enough for interops too?  For the third-party library part, I am thinking about using another library that supports modern auth.  But if we can use a common solution (ie certificate auth), I prefer that.  How does the certificate-based auth work?  Can it be used for both outlook and third party libraries and MAPI?