WPForms
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5M+ installs 4.8★ (14,369)
Email Checker for Contact Form 7
Verifies email addresses in Contact Form 7 submissions using the Emails Checker API to prevent spam and invalid contacts.
The facts
- Rating
- 3★ from 2
- Active installs
- 100+
- Price
- Free
- Last updated
- 8 Aug 2026
- Added
- Oct 2020
- Requires WP
- 5.0
- Tested up to
- WP 7.0.4
- Requires PHP
- 7.2
- Downloads
- 6,869
Our analysis
AI-assistedEmail Checker for Contact Form 7 is a WordPress plugin that validates email addresses in real time using the Emails Checker API. It aims to prevent spam and invalid contacts from reaching your inbox by performing various checks, such as DNS validation and disposable email detection.
The plugin integrates with Contact Form 7 without requiring changes to your forms. You simply need to enter your API key in the settings page, and it will automatically validate all email fields during form submissions.
Best for: This plugin is suitable for WordPress users who use Contact Form 7 and want to enhance email validation for their forms.
What it does well
- ✓Validates email addresses in real time
- ✓Performs comprehensive email verification checks
- ✓Integrates seamlessly with Contact Form 7
- ✓No changes needed to existing forms
- ✓Uses WordPress privacy tools for data management
Where it falls short
- •Limited information on user ratings and active installs
- •No details on support or updates beyond the last update date
Verdict
Email Checker for Contact Form 7 offers a robust solution for validating email addresses in forms, though users should consider the limited feedback from current ratings.
From the developer
Kalpraj Solutions's own description of Email Checker for Contact Form 7, lightly tidied.
Email Checker for Contact Form 7 validates email addresses in real time using the Emails Checker API before accepting form submissions. This stops spam, promotional emails, and invalid contacts from reaching your inbox.
The plugin performs comprehensive email verification including:
- DNS validation, including MX record lookup
- Disposable email address detection in real time
- Misspelled domain detection
- Email syntax verification (IETF/RFC standard conformance)
- Mailbox existence checking
- Catch-all testing
- Greylisting detection
- SMTP connection and availability checking
The plugin integrates seamlessly with Contact Form 7 — no form changes required. Simply enter your API key in the settings page and the plugin automatically validates all email fields.
Privacy
This plugin uses WordPress transients to store rate-limiting counters keyed by the visitor’s IP address (hashed with MD5). No email addresses or personal data are sent to the Emails Checker API — only the email field value being validated is transmitted. Rate-limit transients expire automatically within the configured time window (default 60 seconds).
The plugin integrates with WordPress’s built-in privacy tools:
* Data export: IP-based rate-limit data associated with a given email address is included in WordPress privacy exports.
* Data erasure: Rate-limit transients can be erased via WordPress privacy erasure requests.
Tagged as
purpose
Contact & Custom Forms
platform
Contact Form 7
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