Dovecot OIDC question

Exploring the possible use of SSO using OIDC with Dovecot. Trying to understand the functionality of OIDC as it pertains to e-mail clients like Thunderbird, Outlook etc...

My OIDC provider will authenticate a user by intercepting the connection attempt to the resource, present a login screen and after success it will redirect to the resource. When it comes to e-mail clients, how would that process work if at all?

Thanks