Consider:
(1) An encrypted email address is completely unusable unless it can be decrypted.
(2) You _want_ the user to use the email address (otherwise, you wouldn’t have given it to them). Therefore, the user (specifically, the user’s *browser*) must be able to decrypt the email address.
(3) The only way that will happen is if you provide instructions on how to do so. At this point, _anyone_ can decrypt it (including spam bots), so why bother?
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A way around this is to simply *not* give out any email addresses. Use a contact form instead; that way, the user doesn’t have your email address until you’ve received their message and decided that it’s worth replying to.