by Erik 4.2 (13 reviews)

AntiSpam for Contact Form 7

Name: AntiSpam for Contact Form 7
Rating: 4.2 (13 reviews)
Author: Erik

A trustworthy antispam plugin for Contact Form 7. Wave goodbye to spam and keep your inbox clean!

AntiSpam for Contact Form 7 ranks #1,873 among WordPress.org plugins with 10,000+ active installations, is #92 of 3,352 in the Communication category, a 4.2/5 rating from 13 reviews, and was last updated Apr 21, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 6.9 (Current: 7.1)

v0.7.6 Current Version v0.7.6

Updated 4 months ago Last Update on 21 Apr, 2026

Refreshed 6 hours ago Last Refreshed on

#92 of 3,352 in Communication Top 5% by installs Downloads -24.7% this week

View on WordPress.org

Rank

#1,873

-1 this week

Active Installs

10K+

-29.9%

KW Avg Position

0.5 worse

Downloads

86.2K

+35 today

Support Resolved

— No change

Rating

84%

Review 4.2 out of 5

4.2 (13 reviews)

Next Milestone 20K

Total Progress 43.6%

10K+ 20K+

452

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

Unlock Exact Install Count

See the precise estimated active installs for this plugin, calculated from real-time ranking data.

Exact install estimates within tiers
Track install growth over time
Milestone progress predictions

Upgrade to Pro

Need 5,643 more installs to reach 20K+

Rank Changes

Current #1,873

Change

Best #

Upgrade to Pro

Unlock 30-day and 90-day rank history charts with a Pro subscription.

Upgrade Now

Active Installs Growth

Upgrade to Pro

Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

Upgrade to Pro

Unlock 30-day, 90-day, and yearly download history charts with a Pro subscription.

Upgrade Now

Reviews & Ratings

4.2

13 reviews

Overall 84%

10 (77%)

0 (0%)

1 (8%)

0 (0%)

2 (15%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

Resolution Rate

Security History

Source: WPVulnerability

2 known vulnerabilities on record · 1 in the last 24 months · checked 2 days ago

Jul 16, 2025

AntiSpam for Contact Form 7 [cf7-antispam] < 0.6.4

CVE-2025-54020 · Fixed in v0.6.4
Mar 13, 2024

AntiSpam for Contact Form 7 [cf7-antispam] < 0.6.1

CVE-2024-27961 · Fixed in v0.6.1

Track This Plugin

Get detailed analytics, keyword tracking, and position alerts delivered to your inbox.

Start Tracking Free

Plugin Details

Version: 0.7.6
Last Updated: Apr 21, 2026
Requires WP: 6.2+
Tested Up To: 6.9
PHP Version: 7.4 or higher
Author: Erik

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4.2
Reviews: 13
Support Threads: 1
Resolved: 0%

Keywords

GeoIP antispam honeypot security

Upgrade to Pro

Unlock keyword rankings, search positions, and detailed analytics with a Pro subscription.

Upgrade Now

Similar Plugins

Adminify – White Label, Admin Menu Editor, Login Customizer

6K+ installs

#2,751

Master Addons for Elementor – Elementor Addons, Widgets, Mega Menu Builder, Popup Builder, Widget Builder & Template Kits

WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin

4M+ installs

#12

MC4WP: Mailchimp for WordPress

1M+ installs

#34

Hostinger Reach – AI-Powered Email Marketing for WordPress

1M+ installs

#44

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Joinchat - Enhanced "click to chat"

700K+ installs

#88

Click to Chat - HoliThemes

600K+ installs

#92

View all Communication plugins

TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners using Contact Form 7 who want to stop spam without inconveniencing real visitors. It combines multiple bot-detection techniques and a self-learning Bayesian filter, running entirely on the user's own server without relying on external services.

Browser fingerprinting
Language checks (Geo-IP, headers, browser)
Honeypot and honeyform traps
DNSBL blocklist checking
Automatic IP banning
B8 Bayesian spam filter
Flamingo integration and spam manager
Identity and WordPress data protection

Frequently Asked Questions

Common questions about AntiSpam for Contact Form 7

NO, nobody can guarantee that, and anyone who tells you that is lying. But luckily, bots are limited by the fact that they don't use a real browser and they use fairly repetitive routes which can be recognised.

Contact form 7 is made this way, the main plugin is made to be extended with other modules and this has resulted in many 3rd party plugins like mine! There is already a module for handling received emails, why should I redo it? And, in this way I can focus on my plugin, I believe the "power" of cf7 is just that and I invite you to check how many other nice and free extensions there are!

Because there are so many types of bots in this way detect them all! Phantom-based bots fail with fingerprinting but are proficient with honeypots, while bots written in python fail with honeypots but are proficient with metadata forgery!

The system used to evaluate the e-mail is a non-proportional scoring system and each test have a different score (and can be customised with the advanced settings). When the mail score is equal to or greater than 1 it is considered spam.

Some standard test are Elapsed time, Auto-Blocklisting, Prohibited IP/strings and, in addition, we got some advanced test like HoneyPots, HoneyForms and the browser FingerPrinting.

No, I mean HoneyForm! This is a hidden, bogus form that bots will fill, as it is part of the page code for them and they rarely check the visibility of an element. While honeypots can be easily spotted by some bots, these forms are not because they have the same characteristics as a 'normal' form, and it is impossible to distinguish them without truly visiting the page. This is the first time they have been used, at the moment they seem to work and be effective, but consider this an experimental feature! (ps let me know your feedback about)

We also have honeypots, to activate them just click on a checkbox, and they will be generated automatically for each text field. The only thing you need to check in the CF7A options page is the name of the fields used that need to differ with the names used in contact form 7.

After that the sender ip will be searched into DNS-based Black-hole server to found if that ip is delisted for spam. 10 server are already set as default, but you can add or remove as you like, there are 50 server available (list below).

B8 cuts the text to classify to pieces, extracting stuff like email addresses, links and HTML tags and of course normal words. For each such token, it calculates a single probability for a text containing it being spam, based on what the filter has learned so far. B8 is a free software form Tobias Leupold, who I thank for making it available to everyone. Filters Before processing the email add_filter('cf7a_message_before_processing', 'my_message_before_processing', 10, 2 ); Before processing the email with bayesian filter add_filter('cf7a_before_b8', 'my_before_b8', 10, 3 ); Add your own spam filter add_filter('cf7a_additional_spam_filters', 'my_additional_spam_filters', 10, 3 ); Add some content when resending a mail (useful to add a message like "this was spammed" or the original mail date/time) add_filter('cf7a_before_resend_email', 'my_before_resend_email', 10, 3 ); DEBUG define( 'CF7ANTISPAM_DEBUG', true); Enables debug mode (wp-debug has to be enabled) - verbose mode, prints email analysis results into wp-content/debug.log define( 'CF7ANTISPAM_DEBUG_EXTENDED', true); Enable extended debug mode ("CF7ANTISPAM_DEBUG" has to be enabled) - disable autoban, enable advanced logging, when you uninstall the plugin, the word database, blocklist and options are not deleted.