Mail find info

https://whatismyipaddress.com/trace-email

https://hunter.io/

https://www.rightinbox.com/blog/how-to-trace-email-sender-location

https://support.google.com/mail/answer/29436?hl=en

https://support.microsoft.com/en-gb/office/search-and-filter-email-3e32b06d-a2d9-4a66-922f-78b77c41b97f

https://knowledge.hubspot.com/email-notifications/how-can-i-find-my-email-servers-imap-and-smtp-information

https://www.youtube.com/watch?v=lLtjwt0wmnQ