Spam Prevention/Reduction - Contact Form?

Question

I want to add a simple Contact form to my web site so that customers can contact me easily.

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Answer 1

You can add simple question, each serious person who wants to contact you, can easily answer. For example a field where he should enter the first letter of the domain. Most bots don't understand the question and will enter nothing or something random.

You could also try to track the time how long the user needs to input data. If he tries to send the form earlier than 5 seconds before typing the first word just don't allow to send it. Bots usually just parse the site, fill out everything and then post it and go to the next website.