How to extract customer contacts from email?

Question

Email

How to extract customer contacts from email?
We do not yet maintain CRM and customer contacts are simply in the mail ([email protected])
How to automatically pull out customer contacts with email binding?
There is mail, the client's name (linked to the mail), the client's name in the body of the letter, the phone number in the body of the letter.
Several thousand messages.
Several messages from each client (order clarification, etc.).