The Email Registration Blacklist plugin for WordPress equips site administrators with a comprehensive set of tools to safeguard their websites against unsolicited registrations, comments, and form entries. This powerful tool allows for the blacklisting of specific email addresses or domains, while also providing the option to establish a whitelist for approved entities.

Features List:

• SpamAssassin Integration: Utilizes SpamAssassin’s list to update your site’s blacklist with questionable domains.
• Domain Allowlist: Restricts site access to only pre-approved domains.
• Email Allowlist: Enables site functionalities like registration and commenting exclusively for listed emails.
• IP Allowlist: Allows site access solely to IPs on the approved list.
• Domain Denylist: Forbids certain domains from any interaction with your site.
• Email Denylist: Blocks specific email addresses from registering or posting comments.
• IP Denylist: Denies access to particular IPs for all site activities.
• Gmail Address Recognition: Detects unique Gmail address variations for refined filtering.
• Detailed Configuration Options: Provides detailed settings for managing domain registration filters.
• Comment Domain Filter: Screens comments for domain compliance.
• DNSBL Checking: Verifies user domains against extensive DNS-based blacklists during sign-up.
• List Importing: Allows for quick CSV uploads of blacklists and allowlists.
• Domain Verification: Tests domains to confirm their blacklist status.
• Registration Attempt Log: Documents and details every failed registration.
• Customized Rejection Notices: Tailors messages for users attempting to register with blocked domains or emails.

With its extensive capabilities for managing both IP and domain blacklists and whitelists, this plugin is indispensable in the battle against spam and unwanted user interactions. Site managers can confidently block sign-ups from certain domains, filter out temporary emails, and remove non-compliant users, guaranteeing a secure and spam-free platform.