by stackedboost 1 (0 reviews)

Stackedboost Signup Guard - Block Disposable Emails on Registration and Comments

Name: Stackedboost Signup Guard - Block Disposable Emails on Registration and Comments
Author: stackedboost

Blocks disposable email at registration and comments to stop fake accounts and registration spam. 8,201 domains bundled, no API, no signup.

Stackedboost Signup Guard ranks #60,428 among WordPress.org plugins with 1+ active installations, is #1,126 of 1,867 in the User Management category, a 1/5 rating from 0 reviews, and was last updated Sep 15, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

v1.1.0 Current Version v1.1.0

Updated 1 month ago Last Update on 15 Sep, 2026

Refreshed 1 week ago Last Refreshed on

#1,126 of 1,867 in User Management

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Rank

#60,428

— No change

Active Installs

— No change

KW Avg Position

102

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Downloads

175

+2 today

Support Resolved

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Rating

20%

Review 1 out of 5

1 (0 reviews)

Next Milestone 10

Total Progress 30%

0+ 10+

47,491

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #60,428

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

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Reviews & Ratings

1.0

0 reviews

Overall 20%

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Plugin Details

Version: 1.1.0
Last Updated: Sep 15, 2026
Requires WP: 6.0+
Tested Up To: 7.1
PHP Version: 7.4 or higher
Author: stackedboost

Support & Rating

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

Keywords

comment spam disposable email registration spam registration temporary email

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Frequently Asked Questions

Common questions about Stackedboost Signup Guard - Block Disposable Emails on Registration and Comments

It leaves WooCommerce alone on purpose. This plugin only guards WordPress core account registration and WordPress core comments. WooCommerce checkout and WooCommerce account registration are covered by a sibling plugin, Stackedboost Email Guard. Running both on the same field would show the customer the same complaint twice, so Signup Guard stays out of WooCommerce entirely.

No. The bundled domain list is a file inside the plugin, read from your own server's disk. There is no API call, no remote lookup, no telemetry, and no account to sign up for. Everything the plugin does happens inside your own WordPress install.

Some legitimate people use forwarding services or privacy focused email addresses that can look like throwaway domains. If a real visitor tells you they were turned away, go to Settings > Signup Guard and add their domain to the "Never block" list. It wins over the bundled list and your own block list, and takes effect immediately.

Yes. Blocking example.com also blocks mail.example.com, signup.example.com, and any other subdomain of it. The same rule applies to the allow list.

No. Anyone logged in with the ability to moderate comments is exempt from every check the plugin makes, so you can test your own registration and comment forms without being refused by your own settings.

The list is bundled with the plugin and updated when a new plugin version ships, so it is only as current as your installed version. New disposable mail services appear regularly and will not be caught until the list is updated. If you spot one being used to spam your site, add its domain to the "Also block" list yourself, it takes effect right away without waiting for a plugin update. If you would rather not track new services by hand, the optional Signup Guard Pro add-on checks against a live list refreshed daily.

The list file is only read when someone actually submits a registration or a comment, not on every page load. It is not shipped as PHP code, so it costs nothing until it is needed.

Yes. Settings > Signup Guard has separate switches for registration and for comments, so you can guard one form and leave the other open.