Double Opt-In for Contact Form 7 – Secure, GDPR-Compliant vs miniOrange OTP Login, Verification and SMS Notifications

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).

Features | Setup Guide | Documentation | Contact Us The WordPress OTP Verification plugin verifies users’ email IDs and mobile numbers through an OTP (One-Time Password) sent during registration, login, and contact form submissions. This ensures that only genuine users can sign up while preventing fake registrations and duplicate accounts. Watch this video to learn more about the OTP Verification plugin and its capabilities: Enjoy 10 free email and SMS OTPs upon installation to experience the plugin’s functionality. FEATURES OF ONE-TIME PASSWORD PLUGIN OTP Verification On 30+ forms miniOrange SMS gateway support Login with Phone Number Register with Phone Number SMS Notifications for WooCommerce Order Status OTP Spam Preventor/Limit OTP Addon Allow OTP for selected countries Ultimate Member SMS Notification Ultimate Member Password Reset Detailed Transaction Reports and Logs Passwordless Login using OTP Verification Country code dropdown Customize OTP length and validity Masked phone number and email address on the frontend for user privacy Block specific email domains and phone numbers OTP pop-up customization (available on limited login, registration, and checkout forms) Translation ready — compatible with WPML & PolyLang for multilingual sites AI-Ready — WordPress Abilities API integration to send/verify OTPs and manage plugin settings via AI agents & MCP-compatible tools PREMIUM FEATURES AVAILABLE ON UPGRADE OTP Over WhatsApp Both Email and Phone Verification Custom SMS & Email Gateways Register Using phone number Addon WCFM Vendor SMS Notifications Dokan Vendor SMS Notifications Elementor Pro Forms Checkout WC Form Jet Engine Form JetFormBuilder Form by Crocoblock WS Pro Contact Form Tutor LMS Instructor Registration Form Tutor LMS Login Form Tutor LMS Student Registration Form User Registration Forms — WP Everest WooCommerce Frontend Manager Form (WCFM) Houzez — Real Estate Theme Login using phone number Addon Autofill OTP on Phone (auto-read OTP from SMS) Numeric or Alphanumeric OTP Format OTP Verification on Selected WooCommerce Product Category Geolocation/IP based Country Code Dropdown WordPress Registration SMS Notification to Admin & User Master OTP for admin/testing verification Back-Up SMS Gateway (automatic failover) WooCommerce Low Stock & Out of Stock Notifications miniOrange SMTP support for Email OTP Globally Banned Phone Number (block numbers across your account) Import/Export plugin configuration and settings Customize specific SMS and Email templates THIRD PARTY CUSTOM SMS GATEWAY FOR OTP Verification and SMS Notifications In the OTP Verification Plugin, you can use your third-party gateway for sending the SMS/Email & SMS Notifications. You can also use the miniOrange gateway to perform OTP verification over Phone/SMS and Email or to send SMS notifications. We support OTP Verification worldwide. Some of the well-known Gateways supported for OTP and SMS (OTP): — Twilio — Clickatell — ClickSend — SendGrid — Plivo — AWS SNS — Msg91 Check the list of a few of our supported SMS gateways here : SMS Gateways WHATSAPP OTP VERIFICATION & NOTIFICATIONS In our OTP Plugin, you can enable OTP Verification via WhatsApp as well as send custom messages & order notifications on WhatsApp. Enables order status notifications, new account sms notifications, and many more on WhatsApp. Contact us at [email protected]/[email protected] to know more. AI-READY: WORDPRESS ABILITIES API & MCP INTEGRATION The OTP Verification plugin integrates with the WordPress Abilities API, exposing plugin actions as AI-ready abilities that can be invoked by AI agents and MCP-compatible tools. This lets you automate and manage OTP Verification using natural language through your AI assistant, including: * Send, verify and resend OTPs programmatically * Enable/disable and configure supported forms * Configure SMS/Email gateways and WhatsApp settings * View transaction reports, logs and remaining transactions * Manage blocklists, country restrictions and rate-limit/spam settings * Manage account, run diagnostics and update OTP settings FREE AND PREMIUM OTP VERIFICATION ADDONS SUPPORTED Follow the link to check free and premium addons supported in the OTP Verification plugin : OTP Verification Addons Supported Login with Phone Number:The login with Phone add-on allows users to log in using a phone number only. WooCommerce SMS Notifications:Allows your site to send automated WooCommerce order notifications and WooCommerce sms notifications to buyers, sellers, and admins. Buyer and seller both can get SMS notifications after an order is placed or when the order status changes. Passwordless Login:With Passwordless login, users would be able to log in using their Username and OTP. Register Using Phone Number Only:: Users can register on your WordPress site using only a Phone Number and OTP instead of an Email address or Username. WooCommerce Password Reset:Addon replaces the existing WooCommerce Password reset functionality with OTP Verification. Allow users to reset their password using OTP Verification instead of email links. Ultimate Member SMS NotificationsAllows your site to send automated Ultimate Member notifications to admins and users. Ultimate Member Password Reset:Add-on that replaces the existing Ultimate Member Password reset functionality with OTP Verification. Allow users to reset their passwords using OTP Verification instead of email links. Country Restriction Addon:Add-on allows OTP Verification to be enabled for a selected list of countries only. OTP Verification for any other country outside the selected list will be blocked by the addon. OTP Over Phone Call:Add-on allows OTP Verification over a Phone Call instead of SMS. The code will be received via a phone call to the customer. Updated List Of Supported Forms Supported WordPress Forms WordPress Login Form Elementor Pro Forms WordPress default registration/TML Registration Form WooCommerce Login Form WooCommerce Registration Form WooCommerce Checkout Form WooCommerce FrontEnd Manager Form(WCFM) WooCommerce Billing Address Form Ultimate Member Registration Form Ultimate Member Profile/Accounts Page Ultimate Member Login Form Ultimate Member Password Reset Form Gravity Forms Form Maker Form User Registration Form — WP Everest WooCommerce Social Login form ARMember Registration Form Profile Builder Registration Form Simplr Registration Form BuddyPress / BuddyBoss Registration Form RegistrationMagic / User Registration Form Builder Users Ultra Registration form User Profiles Made Easy Registration Form Checkout WC PIE Registration Form Contact Form 7 Ninja Forms Above version 3.0 Theme My Login Gravity Forms WP-Members Indeed Ultimate Membership Pro Classify Theme Registration Real estate 7 pro Theme WP eMember Form FormCraft Basic — Free Version FormCraft — Premium Version WordPress Comment Form DocDirect Theme WpForms Caldera Forms MemberPress Registration Paid Membership Pro Real Estate 7 Pro WooCommerce Product Vendor Registration Form Formidable Form Visual Form Builder Eduma Login Form Eduma Theme Registration Form UserPro Plugin WS Pro Contact form JetFormBuilder by Crocoblock Everest Contact Form Fluent Form Fluent Conversational Form Forminator Form Dokan Registration Form WooCommerce Account Details Form miniOrange Login/Register with Phone Form Easy Registration Forms Houzez Theme Registration Jet Engine miniOrange Social Login WP User Manager Registration Form Real Estate WP Theme Registration Form WP Client Registration Form MemberPress Single Checkout Registration Form MultiSite Registration Form How does this plugin work? On submitting the registration/login form, an Email/SMS with OTP is sent to the email address/mobile number provided by the user. Once the OTP is entered, it is verified, and the user gets registered/logs in. External Services and Libraries This plugin uses the miniOrange Servers for OTP Validation. intlTelInput – The plugin uses the intlTelInput library for international telephone input formatting and validation. The minified files intlTelInput.min.js and intlTelInput.min.css are included in the plugin distribution. The source code for intlTelInput is available at: intlTelInput GitHub repository SUPPORT Customized solutions and Support options are available. Email us at [email protected]/[email protected].