will simply be dropped (replaced by an empty string).You can easily see the effects of MailTo by comparing these examples for logged-in and anonymous users So why do emails get caught in spam? Short answer: spam filters. There, problem solved. No? Alright then, lets dive into this and open it up a bit.Its programmed with a specific set of criteria for what spam looks like, and pulls email that meet enough of those criteria out of the flow. Is there a reason to use or not use mailto over forms for contact with people? I thought hiding the email from bots was ideal. OpinionFrom my point of view I have always leaned to making sure the user experience the best and dealing with the spam through good spam filters or some other means like If you dont know the problem with mailto: links, read Why no mailto?, by Jakob Nielsen. This Redirect- mailto: trick reduces spam by separating e-mail addresses from Web pages while still providing a way for the user to click an e-mail address link and have it open their local mailer.