Map a mail contained in text field as reporter

[Thomas Franchetto]

Hello,
I have quite a lot of issue with this format:

Summary:
"21389213219 Example summary 1"

Reporter:
"no-reply@example.com"

Text:
"
Name: Customer Name
Email: customer@example.com
Request: I need to know what example mean
"

I can easily target this kind of issue using advanced search.
What I can't realize is how I can get the "customer@example.com" and set it as reporter

Tried with Automation but actions are limited to knows fields

Thanks