SCRYPTmail is described as 'is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain' and is an website in the Security & Privacy category. There are more than 25 alternatives to SCRYPTmail, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and Android. The best alternative is ProtonMail, which is both free and Open Source. Other great sites and apps similar to SCRYPTmail are Tutanota (Freemium, Open Source), Posteo (Paid, Open Source), mailbox.org (Paid) and Mailfence (Freemium).
mailbox.org offers a secure e-mail account for home and business use. The domain name, firstname.lastname@example.org, is easy to remember and can be understood anywhere in the world. They have been operating e-mail accounts for more than 20 years and are a highly reliable service provider.
We believe that Internet privacy is an absolute and definitive right. Online privacy matters and is just as important as offline privacy. Some people say that the loss of privacy is the price we must pay for security.
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.
Mailvelope is a browser extension that allows to exchange encrypted emails following the OpenPGP encryption standard. Mailvelope integrates directly into the Webmail user interface, it's elements are unintrusive and easy to use in your normal workflow.