#1
Blacklist Checker Addon for IP Base
An IP address usually gets blacklisted when someone reports an IP which is sending out spam emails. Most email providers use blacklist databases to check IP addresses to filter out spam emails in their network. So it is better to check IP address’ status or else the emails might end up in the spam folder or in the worst case it could just bounce back to the inbox.
#2
Contact Form 7 Manual Spam Blocker
Contact Form 7 Manual Spam Blocker is an easy-to-use plugin to block all those spammers who manually fill out forms on your website.It provides with an extra tab on each Contact Form 7 (CF7) edit screen where you can set block conditions for each input field in the form.Spammer usually can be identified with the continuous, unwanted contact form submission on your website who include some sort of marketing text in their message, e-mail are usually from the same domain.Each time you find a new spammer irritating you, just add another line in the block settings and show them a harsh spam message.