Custom App email switching from SMTP Basic Auth to Modern Auth

Copper Contributor



we send email using SMTP with username and password. Since Microsoft announced to turn off basic authentication we want to switch to modern authentication. 

I read your blog posts and I'm not sure which modern technology we should use now to send emails.


Is SMTP with OAuth or Graph API the way to go?


Which one is Microsoft's preferred way? I can not find a definite answer to this question. 

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