Sending Email in Tls with Client Certificate Authentication

Q1. What is the problem that you are trying to solve?
Is it planned to be able to open a Tls transport (STARTTLS) for email transmission using authentication by client certificate?

Q2 - Who is impacted?

Q3 - Why is it important and/or urgent?
In best practice, using Client Certificate authentication is better than user/password authentication

Q4 - What is your proposed solution? (optional)

Q5. Community support