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Start.me OSINT collection with categorized tools for people, websites, social media, and investigations.

Weekly OSINT newsletter archive covering new tools, methods, tutorials, and community updates.

Open source email alias service for creating disposable forwarding addresses and protecting inbox privacy.

AnonymMail.net helps create email aliases or forwarding addresses to protect your real inbox.

Email finding and verification service for discovering business email addresses and checking deliverability.

Checker for seeing whether an email appears in the historical Ashley Madison breach dataset.

Caspio search page for finding Cal Poly-related email records or directory information.

Can I Email? is a developer resource for coding, documentation, communities, security research, or software tools.

MXToolbox tool for analyzing email headers, tracing message routes, and spotting delivery or authentication issues.

Email Privacy Tester is a privacy tool for blocking ads, trackers, popups, proxies, or unwanted web behavior.

WikiLeaks archive for searching emails and documents from the Macron campaign leak.

OpenPGP Email Encryption is a privacy tool for blocking ads, trackers, popups, proxies, or unwanted web behavior.

Independent, ad-free email, calendar, and address-book service based in Germany, with privacy-focused account and encryption options.

Email alias service for creating forwarding addresses that protect your real inbox.

Open-source email alias service for receiving and replying without exposing a personal address, with apps, extensions, custom domains, and self-hosting support.

Dutch private email service with no advertising or profiling, unlimited aliases, spam protection, and PGP or password-protected messages.

Open source email verification service for checking syntax, MX records, and deliverability through an API.

Python tool for collecting email addresses from search engines and public web sources during authorized research.

Reverse WHOIS lookup for finding domains connected to the same registrant, email, or ownership details.

Command-line tool for checking which known breaches may be linked to a target email address.

OSINT framework for finding public information linked to phone numbers, emails, usernames, and other identifiers.

OSINT search platform for finding emails, domains, files, leaks, and public records across sources.

Passive OSINT reconnaissance framework in Rust: subdomains, DNS, ASN, certificate transparency history, GitHub dorking, tech fingerprinting, emails an

Russian-language guide for reducing online exposure and understanding counter-OSINT practices.