source: https://www.securityfocus.com/bid/5682/info

Reportedly, when decoding a HTML email, Outlook Express will stop responding upon encountering a <A HREF> link longer than 4095 characters. It is not confirmed why this behaviour occurs.

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/21789.zip