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Email search tool for finding public addresses and related information during OSINT investigations.

Hunter tool for verifying if an email address is valid, deliverable, and safe to use before outreach.

Browser tool guide for checking whether an email address is linked to visible Facebook results.

Reverse email lookup tool for finding public profiles, social accounts, and identity clues linked to an email address.

Browser extension guide for finding LinkedIn profiles connected to an email address.

mailbox.org

mailbox.org

German email and productivity service with ad-free mail, aliases, encrypted transport and storage, and optional office, drive, and meeting tools.

Mailfence

mailfence.com

Belgian email service with browser-based OpenPGP encryption, digital signatures, aliases, custom domains, calendars, and documents.

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?

caniemail.com

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

Checks email-related breach signals and exposed data sources to support security reviews and OSINT research.

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.

OSINT platform for reverse email and phone lookups, helping investigators find public account links and digital traces.

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

OpenPGP Email Encryption

openpgp.org

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

Posteo

posteo.de

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

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.

Self-hosted downloader and player for YouTube, Bilibili, Twitch, MissAV, and yt-dlp sites. Features channel subscriptions, auto-downloads, and local storage for media. Organize your library into collections with a sleek UI. Includes built-in Cloudflare Tunnel support for secure remote access without port forwarding. Docker-ready deployment.

Bitwarden Integration

bitwarden.com

Bitwarden Integration is an email utility for inbox management, privacy, aliases, extraction, or temporary mail.

ElectronMail is an open source project with code, documentation, and setup resources for email tools.