camel-mail uses java-mail. Meanwhile java-mail does support OAuth for imap and smtp (see https://javaee.github.io/javamail/OAuth2). The OAuth access tokens typically expire. The current camel-mail component does not allow to dynamically read the password (=token), the password is fix set in the configuration. Therefore it is not possible to update the password/token.
We improve the camel-mail component so that it is possible to dynamically read the user and password/token, so that the OAuth use case can be supported.
Instead of setting the user and password on the configuration, you specify an authenticator bean in the configuration. The authenticator method
public PasswordAuthentication getPasswordAuthentication()
will be called dynamically whenever a user/token (or password) is needed for connecting to the mail server.