ASCII to HEX (Conversion Tool) and Hex to Java Script creator:
The above is also useful for encoding mailto addresses for
websites to defeat mail spamming crawlers, or encode email
[though not for security or privacy reasons]. To HEX code your
email address or text, enter it into the first box, and encode
it.
Then cut and paste the HEX coded address/text from the second box
into your web page or email message [the receiver will need to
convert it back
here -
http://peoplescounsel.orgfree.com/ref/gen/security/hex_to_ansii.htm;
no record of the material converted is saved here ].