Delphi DLL

Unobfuscate a Spammy Email

Demonstrates the Chilkat Email.UnSpamify method, which unobfuscates an email by undoing common spammer tricks — it removes comments from HTML bodies and unobfuscates hyperlinked URLs. This example cleans an HTML body whose link was broken up by an inserted comment.

Background: Spammers deliberately scramble HTML to slip past filters — inserting empty comments in the middle of words or URLs (example.com), or otherwise obfuscating links — so the message renders normally to a human but confuses naive keyword matching. UnSpamify reverses those tricks, producing a normalized body that is easier to analyze, classify, or scan for the real destination of its links.

Chilkat Delphi DLL Downloads

Download Chilkat for Delphi DLL

Delphi DLL

var
email: HCkEmail;
cleaned: PWideChar;

begin
//  Demonstrates the UnSpamify method, which unobfuscates an email by undoing common spammer
//  tricks: it removes comments from HTML bodies and unobfuscates hyperlinked URLs.

email := CkEmail_Create();
CkEmail_putSubject(email,'UnSpamify example');

//  An HTML body with an obfuscating comment inserted into a hyperlink.
CkEmail_SetHtmlBody(email,'<html><body>Visit <a href="http://exa<!--x-->mple.com">our site</a>.</body></html>');

//  Undo the obfuscation.
CkEmail_UnSpamify(email);

cleaned := CkEmail__getHtmlBody(email);
Memo1.Lines.Add(cleaned);

CkEmail_Dispose(email);