<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>lassejansen</author><text>One great application of this would be to hide the unsubscribe link if the email is forwarded.</text><parent_chain><item><author>shimon</author><text>TL;DR: A series of markup and styling hacks that exploit HTML interpretation quirks of various web email services can be hacked to intentionally vary message appearance between services. Coupled with forwarding, which further transforms the email using service-specific quirks, you can make a game where different paths of forwarding across services trigger different appearances.&lt;p&gt;Fun hack! I feel like there should be some clever practical applications but I&amp;#x27;m drawing a blank.</text></item></parent_chain></comment><story><title>Show HN: Super Mail Forward, an HTML email that evolves as you forward it</title><url>https://medium.com/@hteumeuleu/super-mail-forward-an-email-that-evolves-as-you-forward-it-84466596f30d</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>hk__2</author><text>&amp;gt; I feel like there should be some clever practical applications but I&amp;#x27;m drawing a blank.&lt;p&gt;You could maybe make some sort of email analytics where you could guess the email client of the readers. Use a different background 1x1 gif image for each one then check your logs.</text><parent_chain><item><author>shimon</author><text>TL;DR: A series of markup and styling hacks that exploit HTML interpretation quirks of various web email services can be hacked to intentionally vary message appearance between services. Coupled with forwarding, which further transforms the email using service-specific quirks, you can make a game where different paths of forwarding across services trigger different appearances.&lt;p&gt;Fun hack! I feel like there should be some clever practical applications but I&amp;#x27;m drawing a blank.</text></item></parent_chain></comment><story><title>Show HN: Super Mail Forward, an HTML email that evolves as you forward it</title><url>https://medium.com/@hteumeuleu/super-mail-forward-an-email-that-evolves-as-you-forward-it-84466596f30d</url></story>