WebInk Digital

This plugin is an add-on for the <a href="https://wordpress.org/plugins/booking/" rel="ugc">Booking Calendar</a> plugin and requires it to function (version 10.10.2 or newer).
It enhances booking security by introducing One-Time Password (OTP) verification via SMS or email. When a user attempts to confirm a booking, they are prompted to verify the action with an OTP, helping to ensure the authenticity of the request.
SMS verification is provided via the <a href="https://sms.to" rel="nofollow ugc">SMS.to</a> service. You must have an active SMS.to account and API key configured in the plugin settings to enable SMS delivery.
<h3>External Services</h3>
This plugin connects to an external service to send One-Time Passwords (OTP) via SMS as part of the booking verification process.
Service Used: <a href="https://sms.to" rel="nofollow ugc">SMS.to</a> 
What it’s used for: Sending OTPs (One-Time Passwords) via SMS during booking confirmations. 
What data is sent and when: 
– The recipient’s phone number 
– The OTP message content 
These are sent to the SMS.to API at the time a booking requires verification via SMS.
Terms of Service: https://sms.to/terms/ 
Privacy Policy: https://sms.to/privacy-policy/

OTP Add-on for Booking Calendar

Adds One-Time Password (OTP) verification via SMS or email to the Booking Calendar plugin for secure booking confirmations.

mohsin.id

spartac

NotifSMS enables you to send text messages, OTP codes, and 2FA notifications directly from your WordPress site. 
You can send SMS alerts via Twilio, custom SMS gateways, or other supported providers.
Whether you want to notify WooCommerce customers, send OTP for login, or broadcast SMS to users, this plugin provides a straightforward solution.
<h3>🔹 Features</h3>
<ul>
<li>Send SMS from WordPress – Quickly send single or bulk SMS from your WordPress dashboard. </li>
<li>WooCommerce SMS Alerts – Notify customers about order status updates (completed, shipped, cancelled, etc.). </li>
<li>Contact Form 7 & Gravity Forms Integration – Send SMS when a form is submitted. </li>
<li>OTP & 2FA (Two Factor Authentication) – Add secure SMS-based login or verification. </li>
<li>Custom SMS Gateways – Use Twilio or integrate your preferred provider. </li>
<li>Bulk & Newsletter SMS – Send bulk SMS to all users or by user role. </li>
<li>Admin SMS Notifications – Get notified instantly of site activities (new user, post, comment, etc.). </li>
<li>URL Shortening Support – Integrates Bit.ly or Google URL Shortener API. </li>
<li>Developer Friendly – Hooks and filters for custom integrations. </li>
<li>Easy setup – Activate, configure your API key, and start sending SMS in minutes!</li>
</ul>
<h3>🔹 Use Cases</h3>
This plugin is optimized for speed, flexibility, and reliability. It integrates seamlessly with popular plugins and is ideal for: 
– WooCommerce stores that want to send SMS order notifications 
– WordPress membership or e-learning sites that need 2FA/OTP SMS 
– Businesses wanting SMS marketing or user alerts
You can even extend it with premium addons for deeper integrations.
<h3>🔸 Premium Addons</h3>
Upgrade with Pro Addons to unlock more SMS automation and integrations:
<ul>
<li>WooCommerce SMS Addon – Automatic order SMS notifications. </li>
<li>Event Espresso SMS Reminder – Send reminders to event attendees. </li>
<li>Bulk SMS Addon – Send SMS to all users, by role, or to custom lists. </li>
<li>Contact Form 7 SMS Addon – Admin SMS notifications for new form submissions. </li>
<li>Easy Digital Downloads Addon – Customer SMS notifications on order updates. </li>
<li>ClassiPress / Vantage / AdForest Addons – Send SMS to ad owners and business listers. </li>
</ul>
<a href="https://wpsms.io/sms-plugins/" rel="nofollow ugc">View all addons →</a>
Need a custom integration? <a href="https://wpsms.io/" rel="nofollow ugc">Contact us</a> — we’ll help you build one.
Visit the <a href="https://www.wpsms.io/" rel="nofollow ugc">official website</a> for documentation, guides, and API details. 
Contributors are welcome via <a href="https://github.com/mohsinoffline/wp-twilio-core" rel="nofollow ugc">GitHub</a>.
<blockquote>
Disclaimer: This plugin is not affiliated with or endorsed by Twilio, Inc., WordPress, WooCommerce, or any other third-party service mentioned. All trademarks belong to their respective owners.
</blockquote>
<h3>Third-Party Services</h3>
This plugin may send data to the following third-party services when certain features are enabled:
<h3>Bitly URL Shortener</h3>
When used: When the “Shorten URLs using Bit.ly” option is enabled in plugin settings, URLs in SMS messages are automatically shortened using the Bitly API.
Service Information: 
* Service Website: https://bitly.com/ 
* API Documentation: https://dev.bitly.com/v4_documentation.html 
* Terms of Service: https://bitly.com/pages/tos 
* Privacy Policy: https://bitly.com/pages/privacy
Data Sent: Long URLs from SMS messages are sent to Bitly’s API to generate shortened URLs. No personal user data is sent beyond the URLs themselves.
<h3>Google URL Shortener (Deprecated)</h3>
When used: When the “Shorten URLs using Google (Deprecated)” option is enabled in plugin settings, URLs in SMS messages are automatically shortened using the Google URL Shortener API.
Note: Google has deprecated this service. We recommend using Bitly instead.
Service Information: 
* Service Website: https://developers.google.com/url-shortener 
* Terms of Service: https://developers.google.com/terms 
* Privacy Policy: https://policies.google.com/privacy
Data Sent: Long URLs from SMS messages are sent to Google’s API to generate shortened URLs. No personal user data is sent beyond the URLs themselves.
Important: These third-party services are only used when you explicitly enable URL shortening in the plugin settings. If URL shortening is disabled, no data is sent to these services.

NotifSMS – Notifications, OTP & 2FA

This plugin works like a charm. Thanks to the author!



Excellent Work

Send SMS, OTP & 2FA notifications from WordPress via Twilio. Includes automated alerts, bulk messaging, and integrations with popular plugins.

OTP Add-on for Booking Calendar vs NotifSMS – Notifications, OTP & 2FA