Email

Diagram (Roadmap):

https://www.osintdojo.com/diagrams/email

Email Permutator:

http://metricsparrow.com/toolkit/email-permutator/

Email Dossier:

https://centralops.net/co/emaildossier.aspx

Blacklists:

https://mxtoolbox.com/blacklists.aspx

Reverse mail:

https://thatsthem.com/reverse-email-lookup

Number

Phone Number OSINT:

https://medium.com/@SundownDEV/phone-number-scanning-osint-recon-tool-6ad8f0cac27b