Best Practice for Automatic E-Mail Linking

Does anyone have a best practice for auto linking e-mails in v12?

See 2. section in
https://erpnext.com/docs/user/manual/en/setting-up/email/linking-emails-to-document

I’d like to know if it makes sence to use an existing account like anwer@ or if I rather take something designated like attachto@

Best
Wolfram