Mail

  🔸 smtp-tls-checker – check an email domain for SMTP TLS support.
  🔸 MX Toolbox – all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.
  🔸 Secure Email – complete email test tools for email technicians.
  🔸 blacklistalert – checks to see if your domain is on a Real Time Spam Blacklist.
  🔸 MultiRBL – complete IP check for sending Mailservers.
  🔸 DKIM SPF & Spam Assassin Validator – checks mail authentication and scores messages with Spam Assassin.

Secure Webmail Providers

  🔸 CounterMail – online email service, designed to provide maximum security and privacy.
  🔸 Mail2Tor – is a Tor Hidden Service that allows anyone to send and receive emails anonymously.
  🔸 Tutanota – is the world’s most secure email service and amazingly easy to use.
  🔸 Protonmail – is the world’s largest secure email service, developed by CERN and MIT scientists.
  🔸 Startmail – private & encrypted email made easy.

Rajesh Kumar

I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.

I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.