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② 後台搜尋「ClearBounce Email Verification」→ 直接安裝（推薦）
原文外掛簡介
ClearBounce Email Verification validates email addresses in real-time using the ClearBounce email verification API. Stop fake signups, reduce bounces, and protect your sender reputation.
Key Features:
Real-time email verification via SMTP-level checks
Block undeliverable, disposable, role-based, and risky emails
Typo detection with “Did you mean…?” suggestions
Smart caching to minimize API calls
Fail-open design ensures forms always work, even during API outages
Detailed verification logs and statistics
Customizable error messages
Works with WordPress registration, comments, and all major form plugins
Supported Integrations:
WordPress Registration
WordPress Comments
WooCommerce (checkout and registration)
Contact Form 7
Gravity Forms
WPForms
Elementor Pro Forms
Ninja Forms
Fluent Forms
Fallback mode (hooks into is_email for universal coverage)
How It Works:
A visitor submits a form with an email address
ClearBounce verifies the email in real-time (SMTP check, MX records, disposable detection, etc.)
If the email fails your configured rules, the form shows a friendly error message
Valid emails pass through normally with zero friction
What ClearBounce Checks:
Email syntax validation
MX record verification
SMTP mailbox verification
Disposable email detection
Role-based email detection (info@, admin@, etc.)
Free email provider detection
Catch-all domain detection
Typo detection with smart suggestions
