內容簡介
Double Opt-In for Contact Form 7 是一款為 Contact Form 7 表單增加必須的電子郵件驗證步驟的外掛。透過此外掛，您可以確保只有有效的電子郵件地址能夠進入您的收件箱，並符合 GDPR 的要求。
【主要功能】
• 強制電子郵件驗證步驟
• 確認郵件包含唯一的驗證連結
• 支援多種表單系統的擴充外掛
• 中央化表單設定管理
• 自訂確認頁面導向
• 動態條件啟用選項
外掛標籤
開發者團隊
② 後台搜尋「Double Opt-In for Contact Form 7 – Secure, GDPR-Compliant Email Verification」→ 直接安裝（推薦）
📦 歷史版本下載
原文外掛簡介
Double Opt-In adds a mandatory email verification step to your Contact Form 7 forms.
When a visitor submits your form, the original mail is not sent immediately. Instead, the plugin:
Stores the submission in a secure database table.
Sends a confirmation email with a unique, time-limited link.
Only after the visitor clicks that link is the original form mail delivered.
This ensures:
Only valid, verified email addresses reach your inbox.
GDPR / DSGVO requirements are met with proper consent tracking, IP logging, and data retention.
Your database stays clean and reliable — no fake or mistyped addresses.
Out-of-the-box support for Contact Form 7. Additional form systems — Avada, Elementor, Gravity Forms, WPForms — are available as separate addon plugins.
How It Works
A visitor fills out your Contact Form 7 form and clicks submit.
The plugin intercepts the submission, stores the form data, and generates a unique hash.
A confirmation email is sent to the visitor’s email address containing a verification link.
The visitor clicks the link. The plugin verifies the hash, marks the opt-in as confirmed, and sends the original form mail (as if the form was just submitted).
The confirmed opt-in is logged in the admin dashboard with timestamps and IP addresses for full GDPR compliance.
Quick Start
Read the Quick Guide
Free Features
Block-Based Email Templates — build your confirmation email from heading, text, button, spacer, divider and placeholder blocks
Double Opt-In for Contact Form 7 — per-form activation with full CF7 integration
Centralized Form Settings — manage all form integrations from a single admin panel
Email Template Presets — start from a pre-built template (one saved template on the free version)
Send Test Email — preview your confirmation emails before going live
Custom Confirmation Pages — redirect users to a specific page after confirmation
Dynamic Conditions — enable opt-in based on user input (e.g. only when a checkbox is checked)
Delete Confirmation Modal — safety dialog before deleting an opt-in record to prevent accidental deletion
GDPR Consent Export — export individual consent records as JSON or CSV directly from the opt-in detail view
CAPTCHA Compatibility — automatically bypasses Forge12 Captcha, Google reCAPTCHA, and hCaptcha during opt-in confirmation to ensure mail delivery
Rate Limiting — configurable IP and email rate limits to prevent abuse
Error Redirect Page — redirect users to a custom page when an opt-in error occurs (rate limit, invalid email)
Token Expiry — confirmation links expire after a configurable time period
GDPR Data Storage — tracks Form ID, Email, Registration/Confirmation Date & IP, Consent Text
GDPR Anonymization — anonymize personal data instead of deleting it
WordPress Privacy Tools — integrates with WordPress personal data export and erasure requests
Automatic Cleanup — configurable auto-deletion of confirmed and unconfirmed entries
Category System — organize opt-ins into categories for better management
Pagination & Search — search and filter opt-in records in the admin dashboard
Admin Tooltips — contextual help tooltips throughout the admin interface
WordPress Multisite — network-wide activation creates tables on all sites automatically
Developer Hooks — 43 action hooks, 71 filters, and 11 typed events for full extensibility
Pro Features
Unlock the full potential of Double Opt-In with the Pro version:
Additional Form Integrations:
Double Opt-In for Elementor Forms — seamless integration with Elementor’s form widget
Double Opt-In for WPForms — full support for WPForms submissions
Double Opt-In for Gravity Forms — complete Gravity Forms integration
Email Validation & Spam Protection:
Unique Email Validation — prevent duplicate submissions per email address (block, silent, or redirect mode)
MX Validation — verify that the email domain has a valid mail server before sending
Domain Blocklist — block disposable and temporary email domains
Email & Communication:
Double Opt-Out System — unique opt-out links per submission with confirmation emails
Opt-In Reminder System — automatic reminders for unconfirmed opt-ins via cron
Visual Email Editor — drag & drop editor with live preview and mobile preview, plus unlimited saved templates
Resend Confirmation — resend the confirmation email to a single recipient from the admin dashboard
Conditional Email Templates — dynamic content blocks based on form data
Multi-Column Layouts — 2-column, 3-column, and sidebar layouts in the email editor
Image & Social Blocks — add images and social media icons to your emails
Analytics & Export:
Analytics Dashboard — charts and statistics for opt-in/opt-out rates
CSV Export — export all opt-in records for external processing
User Management:
Auto User Creation — automatically create WordPress users after opt-in confirmation with configurable role assignment
Support:
Premium Support — priority email support
Privacy & Telemetry
As of version 5.1.7 the plugin no longer transmits any telemetry. The daily
job that used to send a usage snapshot has been removed, and an update also
removes it from the WP-Cron schedule of sites that already had it.
Usage counters (how many opt-ins were confirmed, for example) are still kept,
but they never leave the site. They are stored in a single WordPress option and
are used only in the admin — for instance to decide whether the plugin has been
useful long enough to ask you for a review.
We never sell or share data.
GDPR / DSGVO Compliance
No personal data, no cookies, no user tracking.
Nothing is sent to any external server. Counters stay in your database and are
removed when you uninstall the plugin.
The telemetry setting under Double Opt-In > Settings is retained: should
transmission ever be reintroduced, it will be honoured before anything is sent.
Bundled assets
The admin interface uses the Inter typeface. It is self-hosted — the font
file is embedded in the plugin’s own admin bundle, so opening the plugin’s
screens does not contact Google Fonts or any other third party. Inter is
licensed under the SIL Open Font License 1.1 (see licenses/inter-OFL-1.1.txt).
