Java

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.

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Chilkat2 Java

import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the UnSpamify method, which unobfuscates an email by undoing common spammer
        // tricks: it removes comments from HTML bodies and unobfuscates hyperlinked URLs.

        Email email = new Email();
        email.setSubject("UnSpamify example");

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

        // Undo the obfuscation.
        email.unSpamify();

        String cleaned = email.getHtmlBody();
        System.out.println(cleaned);
    }
}