Forgot-password --- No email received (Strapi V4)

Hi Paul, thanks for the prompt reply.

Q1) Is sendmail the default email provider from Strapi v4 once setup is completed?

Q2) Just wonder if the configuration in the config/plugin.js is a must to receive the password reset email?
I had a project with Strapi v3, but it seems like nothing to configure when testing the forgot-password function and to receive the reset email? Please correct me if I’m wrong.

Q3) If the Q2 is necessary, I’d prefer using node-mailer. Do I need to manually select the email provider to node-mailer in the Strapi admin panel email configuration after installing @strapi/provider-email-nodemailer ?