#1Email discovery, verification, pattern analysis, and OSINT email investigation tools.
Kitploit recommended

Osintgram is a OSINT tool on Instagram. It offers an interactive shell to perform analysis on Instagram account of any users by its nickname
Scripts to make password spraying attacks against Lync/S4B, OWA & O365 a lot quicker, less painful and more efficient

Search emails from a domain through search engines

Send Mail Anonymously with this Script

Collect information about email addresses from Pastebin

An information gathering tool to collect git commit emails in version control host services

Web scanner that detects CMS versions, plugins, vulnerable JavaScript libraries, email addresses, and phone numbers on target websites, scoring…

The Traditional Swiss Army Knife for OSINT

An advanced Twitter scraping & OSINT tool written in Python that doesn't use Twitter's API, allowing you to scrape a user's followers, following,…

SocialPwned is an OSINT tool that allows to get the emails, from a target, published in social networks such as Instagram, Linkedin and Twitter to…