zerobounce

ZeroBounce Email Verification & Validation

ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve deliverability and reduce bounce rates.

38.6 opportunity score Open evidence Open API Open on WordPress.org

1.0Kactive installs

13.1Kdownloads

4.8rating

0unresolved threads

18complaints analyzed

5praise analyzed

Proof Health

Open evidence

Commercial opportunities need traceable source links before they are treated as build-worthy.

64 / 64 rows with source links

100.0% of this page's analysis has direct source links.

0 build-decision rows missing links

0 rows here require auditable proof before promotion.

0 rows with no attached evidence

0 rows have source counts but still need direct links.

Download Momentum

180 days

312recent 30 days 1.0Kprevious 30 days -70.1%movement 2.0Kshown total

Related Opportunities

0 markets

No opportunity report currently maps to this plugin's tags.

Source Evidence

Open evidence explorer

complaint support · high severity · relevance 1.0

Does zerobounce work with cleantalk anti-spam plugin?

Does zerobounce work with cleantalk anti-spam plugin?: users show security, bugs, compatibility pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Does zerobounce work with cleantalk anti-spam plugin?

complaint support · high severity · relevance 0.97

Latest version has multiple bugs/issues…

Latest version has multiple bugs/issues…: users show security, bugs, missing feature pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Latest version has multiple bugs/issues… Version 1.0.17 has multiple issues including the following: Logs do not show Valid, Invalid, etc.

mixed support · high severity · relevance 0.88

Latest Version Throwing Critical Error!

Latest Version Throwing Critical Error!: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Latest Version Throwing Critical Error!

complaint support · high severity · relevance 0.85

spam mail as valid

spam mail as valid: users show security, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

spam mail as valid If I check the logs then r3fbd8d4sy1@yahoo.com is validated as ‘valid’.

complaint support · high severity · relevance 0.79

is this working with woocommerence?

is this working with woocommerence?: users show support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

I did test checkout with FAKE and nonworking email.

praise review · high severity · relevance 0.66

Works Great!

Works Great!: users show security, pricing, setup pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Works Great!

praise review · high severity · relevance 0.66

Nice Plugin for Combatting Spam (and typos)

Nice Plugin for Combatting Spam (and typos): users show security, missing feature, setup pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Nice Plugin for Combatting Spam (and typos) Been using this a while and it works pretty well; very useful for rejecting fake email addresses used by spammers/scammers, and also for validating real users/customer email addresses (where they sometimes mis-type their email address).

praise review · high severity · relevance 0.6

Excellent in blocking SPAM

Excellent in blocking SPAM: users show security, pricing pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Excellent in blocking SPAM I have tested this plugin on several of my personal and business websites, it’s awesome.

complaint support · medium severity · relevance 0.87

Geolocation by IP please

Geolocation by IP please: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

It’s part of your service and would be great if I can check for the country.

complaint support · medium severity · relevance 0.86

Block Free Email services

Block Free Email services: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Block Free Email services How can I block free email services like gmail, yahoo, etc?

Competitor Context

7 shown

Antideo Email Validator praise owner · intel 64.7 · weakness 50.2

praise owner

below-average rating 9 collected complaint signal(s) bugs missing feature 2 source links Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source 1 source 2

DeBounce Email Validator praise owner · intel 63.3 · weakness 47.3

praise owner

below-average rating 11 collected complaint signal(s) support bugs 2 source links Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source 1 source 2

Clearout Email Validator – Real-Time Email Verification on WordPress Forms praise owner · intel 56.8 · weakness 35.6

praise owner

5 collected complaint signal(s) support missing feature 2 source links Investigate Pain Evidence linked to opportunity

Buyer: store owners and WooCommerce agencies · Wedge: monitor WooCommerce failures, handoffs, and revenue-impacting exceptions

source 1 source 2

QuickEmailVerification praise owner · intel 45.6 · weakness 22.5

praise owner

2 collected complaint signal(s) bugs setup 2 source links Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source 1 source 2

MailboxValidator Email Validator watchlist · intel 44.8 · weakness 40.6

watchlist

7 collected complaint signal(s) missing feature setup 1 source link Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source 1

Dilli Email Validator praise owner · intel 43.0 · weakness 19.2

praise owner

1 collected complaint signal(s) bugs pricing 2 source links Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source 1 source 2

Email Checker for Contact Form 7 praise owner · intel 31.2 · weakness 18.8

praise owner

1 collected complaint signal(s) security 2 source links Investigate Pain Evidence linked to opportunity

Buyer: marketing teams, agencies, and lead-generation site owners · Wedge: monitor contact form 7 submissions, notification delivery, spam, and CRM handoffs

source 1 source 2

Repeated Themes

0 shown

No repeated plugin-level themes have been generated yet.

Collected Signals

20 shown from 28 collected

mixed Add a blacklist of email support · 2025-09-09T14:45:06+00:00 · medium severity · email checker

The user wants an email blacklist because ZeroBounce keeps testing their own autofilled address and consuming paid credits.

Evidence: my own email is listed exactly 1,643 times. So it’s expensive because it use a credit everytime.

missing feature pricing email verification blacklist lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Improvements support · 2025-04-21T07:40:23+00:00 · medium severity · email checker

Improvements: users show missing feature pain that may indicate a product gap.

Evidence: Improvements Your plugin is great.

missing feature quality email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Add missing translations for others EU languages support · 2025-04-18T10:54:26+00:00 · medium severity · email checker

Add missing translations for others EU languages: users show missing feature, migration pain that may indicate a product gap.

Evidence: Add missing translations for others EU languages Please add following missing translation files for IT/ES/PT/DE/EN-GB https://www.swisstransfer.com/d/f4bb6546-06b9-419a-bd88-2744bf0dde39 ( 30 days validity ) Please add following missing translation files for IT/ES/PT/DE/EN-GB https://www.swisstransfer.com/d/f4bb6546-06b9-419a-bd88-2744bf0dde39 ( 30 days vali

missing feature migration translation lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Add missing translation for “Did you mean ?” support · 2025-04-18T10:49:33+00:00 · medium severity · email checker

Add missing translation for “Did you mean ?”: users show bugs, compatibility, missing feature pain that may indicate a product gap.

Evidence: Add missing translation for “Did you mean ?” diff -r zerobounce_1.0.27_custom/zerobounce/public/class-zerobounce-email-validator-form-public.php zerobounce_1.1.3/zerobounce/public/class-zerobounce-email-validator-form-public.php 67d66 < $didYouMean_label = __(‘Did you mean:’, ‘zerobounce-email-validator’); 74c73 < $error_message = isset($typo_error_message)

bugs compatibility missing feature email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Suggestion for improvements support · 2024-12-24T12:58:41+00:00 · medium severity · email checker

Suggestion for improvements: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence: Suggestion for improvements Hi, Been a customer for almost two years now, however there are things that are still missing: Can you please add support for local white and blacklist for email addresses to the plugin?

bugs missing feature support lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint is this working with woocommerence? support · 2024-12-09T10:38:29+00:00 · high severity · email checker

is this working with woocommerence?: users show support pain that may indicate a product gap.

Evidence: I did test checkout with FAKE and nonworking email.

support checkout lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint spam mail as valid support · 2024-11-15T09:35:58+00:00 · high severity · email checker

spam mail as valid: users show security, support pain that may indicate a product gap.

Evidence: spam mail as valid If I check the logs then r3fbd8d4sy1@yahoo.com is validated as ‘valid’.

security support quality email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Compatibility support · 2024-10-06T16:53:27+00:00 · medium severity · email checker

Compatibility: users show missing feature, support pain that may indicate a product gap.

Evidence: Compatibility Hi, Does it work with easy digital download “free download” modal?

missing feature support easy lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

neutral Credits used on plugins are overestimated by 33% support · 2024-04-30T17:25:58+00:00 · medium severity · email checker

Credits used on plugins are overestimated by 33%: neutral conversation with limited structured signal.

Evidence: Credits used on plugins are overestimated by 33% The plugin does not count correctly the used credits by 30% Duplicate requests are counted by the plugin as credit but fortunately not by the api.

api lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Add did you mean email verification on the fly on Gravity Forms support · 2024-04-30T17:15:23+00:00 · medium severity · email checker

Add did you mean email verification on the fly on Gravity Forms: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence: Add did you mean email verification on the fly on Gravity Forms Gravity Forms does not provide the did you mean ?

bugs missing feature support lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Update code to enable translation support · 2024-04-16T08:04:29+00:00 · medium severity · email checker

Update code to enable translation: users show bugs, compatibility, missing feature pain that may indicate a product gap.

Evidence: Update code to enable translation In <span style=”color: rgb(34, 34, 34); font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 14px; white-space-collapse: collapse;”>class-zerobounce-email-validator-form-public.php</span> update line 63 to : $error_message = __('Sorry, upon checking we cannot accept this email address.', 'zero

bugs compatibility missing feature email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Please split Role_based from Do not mail list support · 2024-04-14T06:02:23+00:00 · medium severity · email checker

Please split Role_based from Do not mail list: users show missing feature, support pain that may indicate a product gap.

Evidence: Please split Role_based from Do not mail list Role based are valid email and in case of a quote request by form some clients want their team sales@ marketing@ to receive the reply.

missing feature support quality email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint WooCommerce does not seem to work support · 2024-04-04T18:45:00+00:00 · medium severity · email checker

WooCommerce does not seem to work: users show compatibility, missing feature pain that may indicate a product gap.

Evidence: WooCommerce does not seem to work How exactly is this plugin supposed to integrate with WooCommerce?

compatibility missing feature email lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Latest version removes the PLUGINS admin menu support · 2024-02-22T12:16:35+00:00 · medium severity · email checker

Latest version removes the PLUGINS admin menu: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence: I can still get to the plugins by going wp-admin/plugins.php.

bugs compatibility support setup lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Latest version has multiple bugs/issues… support · 2024-02-22T10:14:17+00:00 · high severity · email checker

Latest version has multiple bugs/issues…: users show security, bugs, missing feature pain that may indicate a product gap.

Evidence: Latest version has multiple bugs/issues… Version 1.0.17 has multiple issues including the following: Logs do not show Valid, Invalid, etc.

security bugs missing feature setup lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Latest Version Throwing Critical Error! support · 2024-02-07T11:38:51+00:00 · high severity · email checker

Latest Version Throwing Critical Error!: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence: Latest Version Throwing Critical Error!

bugs compatibility support reliable lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Geolocation by IP please support · 2023-12-19T10:14:29+00:00 · medium severity · email checker

Geolocation by IP please: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence: It’s part of your service and would be great if I can check for the country.

bugs missing feature support migration lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Block Free Email services support · 2023-12-19T09:36:13+00:00 · medium severity · email checker

Block Free Email services: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence: Block Free Email services How can I block free email services like gmail, yahoo, etc?

bugs missing feature support value lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Add Forminator? support · 2023-11-30T11:46:18+00:00 · medium severity · email checker

Add Forminator?: users show support pain that may indicate a product gap.

Evidence: Add Forminator?

support form lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Nice Plugin for Combatting Spam (and typos) (4 stars) review · 2023-11-11T15:23:45+00:00 · high severity · email checker

Nice Plugin for Combatting Spam (and typos): users show security, missing feature, setup pain that may indicate a product gap.

Evidence: Nice Plugin for Combatting Spam (and typos) Been using this a while and it works pretty well; very useful for rejecting fake email addresses used by spammers/scammers, and also for validating real users/customer email addresses (where they sometimes mis-type their email address).

security missing feature setup reliable lead capture reliability Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin