When usingWordPress Foreign Trade Website, we often involve the function of receiving customer inquiries, which requires form plugins. WPForms is an excellent form plugin. To prevent malicious comments, most people use Google's captcha system. In fact, we can directly use WPForms' built-in allowlist/denylist feature to block certain fixed comments, which is more efficient.
WPForms Allowlist/Denylist Setup Steps
1. Enter WPForms, find the form item you need to set up allowlist/denylist for, and click on it.

2. In the advanced options, you can see an Allowlist / Denylist, where we can set the allowlist and denylist.
3. We select Denylist, then fill in the email addresses to be blocked in the box below.