Tag Archives: SMTP

Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (email) transmission. First defined by RFC 821 in 1982, it was last updated in 2008 with Extended SMTP additions by RFC 5321, which is the protocol in widespread use today. … SMTP communication between mail servers uses port 25.

Case: How to check quality of emails in your database (using KickBox.io)

What could be easier than check an email address? Obviously, at least two operations should be done. First, to check the syntax of each email address. This task isn’t trivial and not only because some users have been registered in localized domains (like .在线, .இந்தியா, or .қаз). Second task is to check if given email does exist at server.


Communicator is the client/server based application that traces e-mail correspondence and saves it as code-protected archive files. It works with SMTP/POP3 servers and Exchange servers. It also can work remotely. Used tools and technologies: C++, Integration with MS Exchange and Outlook