WP-SpamShield Anti-Spam provides you a powerful, user-friendly, all-in-one anti-spam system that eliminates your WordPress site comment and registration spams without CAPTCHA. The plugin also includes spam-blocking contact form.
It works like a firewall of your WordPress site and recognizes spam bots crawling and stops them to spam your website.
Start by installing ‘WP-SpamShield Anti-Spam’ plugin in WordPress
Once the plugin is activated, visit your admin area dashboard Settings -> WP SpamShield to select your options. It provides you tons of options and features you can easily enable via checkbox.
When’re done on options page, save your changes and that’s all. Additionally, the plugin also provides you a contact form you can set up and use from its admin page.