WordPress should be able to handle any html you throw at it in a post or page or even a comment (unless you’ve disabled html). So you could just use the standard:
<a href="mailto:[email protected]" > mail < /a>
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Plus, it will usually automatically convert URLs and email addresses to live links with the address itself as the anchor text. So if you just type in your email address in the post or page it should convert into a live link.
So, you could just do: [email protected]
If you mean how do you create a link to your email address that uses javascript to avoid having the address get picked up by spambots, there’s a plugin for that with the word “transpose” in the name, something like “transpose-email.”