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.

Konceptwise Digital Media Pvt Ltd

Authyo OTP for Ninja Forms is a specialized integration designed to add secure email verification to your Ninja Forms. 
Prevent spam and fake submissions by ensuring users verify their email address via a one-time password (OTP) before submitting the form. 
This lightweight plugin is focused purely on form-level verification, ensuring no bloat while keeping your forms secure.
This plugin connects to Authyo’s external API service to generate and validate OTPs.
Features:
<ul>
<li>Easy Integration: Adds a custom “Authyo OTP” field to your Ninja Forms builder.</li>
<li>Smart OTP Verification: Enforces OTP validation when Authyo is properly configured and funded.</li>
<li>Customizable Settings: Adjust OTP length, expiry time, and verification options.</li>
<li>Fail-Safe Lead Protection: Automatically allows submissions to continue if Authyo is not configured or the wallet balance is exhausted—so no leads are lost.</li>
<li>Developer Friendly: Hooks and filters available for advanced customization.</li>
</ul>
Note: OTP verification requires valid Authyo API credentials and sufficient wallet balance. When unavailable, form submissions will proceed without OTP verification to prevent lead loss.
Video Tutorial How to Use Authyo OTP for Ninja Forms
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/Ei3CTK8f-EU?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>Company Information</h3>
This plugin is developed and maintained by Konceptwise Digital Media Pvt. Ltd.
Authyo is a service owned and operated by Konceptwise Digital Media Pvt. Ltd. and is used by this plugin solely for one-time password (OTP) generation and verification. Details about data usage and applicable privacy and terms policies are provided below.
Important: This plugin is an independent third-party integration for Ninja Forms. It is not affiliated with, endorsed by, or officially supported by Ninja Forms.
<h3>External Services</h3>
This plugin relies on the Authyo API service to generate and verify OTPs.
<ul>
<li>Service Name: Authyo</li>
<li>Service Provider: Konceptwise Digital Media Pvt. Ltd.</li>
<li>Usage: Used to send OTP emails and verify OTP validity.</li>
<li>Data Sent:
<ul>
<li>User email address (to send OTP)</li>
<li>OTP verification requests</li>
</ul>
</li>
<li>Privacy Policy: <a href="https://authyo.io/privacy-policy" rel="nofollow ugc">https://authyo.io/privacy-policy</a></li>
<li>Terms of Service: <a href="https://authyo.io/terms-of-service" rel="nofollow ugc">https://authyo.io/terms-of-service</a></li>
</ul>

Authyo OTP for Ninja Forms

Integrate Authyo OTP verification seamlessly with Ninja Forms.

OTP Add-on for Booking Calendar vs Authyo OTP for Ninja Forms