When comparing PrivMX WebMail vs Chatlink.com, the Slant community recommends PrivMX WebMail for most people. In the question“What are the best ways to transmit sensitive information over the Internet?” PrivMX WebMail is ranked 17th while Chatlink.com is ranked 19th. The most important reason people chose PrivMX WebMail is:
Easy install and did not conflict with postfix dovecot roundcube system on FreeBSD.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very easy to install
Easy install and did not conflict with postfix dovecot roundcube system on FreeBSD.
Pro Even the website owners have no access to the data
Because the encryption keys are generated in client browser and never sent to the server.
Pro All communiction is also encrypted with AES-256
All this encryption takes place at client side, so that even the server administrators have no access to the data.
Pro No need to install anything
Pro All communication is protected with TLS (SSL)
Pro No need to create an account
But creating an account can be useful, too: while having an account the key exchange can be done through public key cryptography.
Pro You can delete messages any time
Pro Chatlink.com does not track or follow you in any way
It does not save any cookies or have any external links (like Google Adwords for example) that could track you.
Pro Chatlink.com is open source
The source code is available here. Being open source allows anyone to audit the code.
Cons
Con Can't send regular email
This appears to be completely standalone system, only users of PrivMX can send and receive mail from other users with PrivMX. You can't send email to regular @ email addresses, or presumably receive email from them either.