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A comment on Ask HN: Do you post your email address publicly?.

Re:Ask HN: Do you post your email address publicly? by bitmedley on Sunday October 27, 2019 @03:51AM (#21368391)
Encoding your email address to hexadecimal may prevent some less sophisticated crawlers from capturing your email address.

mailto: -> mailto:

[email protected] -> abc@gmail.com

Then instead of:

<a href="mailto:[email protected]">[email protected]</a>

Use this:

<a href="mailto:&#097;&#098;&#099;&#064;&#103;&#109;&#097;&#105;&#108;&#046;&#099;&#111;&#109;"> &#097;&#098;&#099;&#064;&#103;&#109;&#097;&#105;&#108;&#046;&#099;&#111;&#109;</a>

Or this ("mailto:" also encoded):

<a href="&#109;&#097;&#105;&#108;&#116;&#111;:&#097;&#098;&#099;&#064;&#103;&#109;&#097;&#105;&#108;&#046;&#099;&#111;&#109;"> &#097;&#098;&#099;&#064;&#103;&#109;&#097;&#105;&#108;&#046;&#099;&#111;&#109;</a>

source: http://www.wbwip.com/wbw/emailencoder.html

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Re:Ask HN: Do you post your email address publicly? by sebazzz on Sunday October 27, 2019 @04:34AM (#21368500)
Wouldn't any decent HTML library, probably already used by the crawler, convert that back to plain text?
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Re:Ask HN: Do you post your email address publicly? by onion2k on Sunday October 27, 2019 @04:45AM (#21368540)
If you're crawling the web looking for email addresses you're probably not bothering to parse the HTML. You don't need to: you can just grab the email from the raw response from the web server, along with any new links to follow.
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