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.

cs7.in

Services :-
<ul>
<li>SIGNIN : Login with an OTP.</li>
<li>SIGNUP : Register with an OTP.</li>
<li>2FA : Two Factor Authentication.</li>
<li>RWL : Ratify (users) Without Login.</li>
<li>RWA : Ratify (guests) Without Account. 
.</li>
</ul>
Seamless OTP Login, Registration & Session 
Enhance your website’s user experience with this powerful and easy-to-use plugin. Let users login or register using a secure One-Time Password (OTP) sent directly to their email—no password required!
You can also enable Two-Factor Authentication (2FA) for an extra layer of security during login or registration.
KEY HIGHLIGHTS
<ul>
<li>
OTP via Email – Send quick, secure, and your own server-based emails.
</li>
<li>
Quick Signin & Signup – Instant, easy, and password-free; Login & signup with OTP.
</li>
<li>
Two-Factor Authentication (2FA) – Add advanced protection to Login or Registration.
</li>
<li>
Guest Access (RWA) – Allow visitors temporary or premium access without registration.
</li>
<li>
Verified Access (RWL) – Allow registered users temporary or premium access without login.
</li>
<li>
Zero External Dependency – Works independently, no Google/Facebook/B2B API required.
</li>
</ul>
Why Choose This Plugin ?
<ul>
<li>
FAST – Lightning-quick OTP delivery and smooth user experience
</li>
<li>
FRIENDLY – Simple and intuitive for both users and admins
</li>
<li>
SMART – Intelligent access handling and user behavior adaptation
</li>
<li>
SMOOTH – Clean UI integration for a frictionless flow
</li>
<li>
SECURED – Robust protection using email verification and secure tokens
</li>
</ul>
This plugin is ideal for membership sites, e-commerce platforms, SaaS applications, and content-based websites looking to offer seamless, secure, and flexible user access. 
.
F E A T U R E S :
Features For Registered Users :
<ul>
<li>Login with OTP.</li>
<li>Verify email to grant actions even without Login. (RWL)</li>
<li>Lock specific pages or URLs for verified users. (RWL)</li>
<li>Re-verify logged-in users for sensitive actions.</li>
<li>Auto Log-out after limited wrong OTP attempts. 
.</li>
</ul>
Features For Visitors (Guests):
<ul>
<li>Serve facilities even without account.</li>
<li>Quick registration with an email and OTP only.</li>
<li>Lock specific pages or URLs for verified visitors. (RWA)</li>
<li>Verify email to grant actions even without registration. (RWA) 
.</li>
</ul>
Features For All :
<ul>
<li>Set 2FA Lock for all.</li>
<li>Set the OTP expiry time.</li>
<li>Set the OTP sending Limit.</li>
<li>Set max wrong attempts Limit.</li>
<li>Block unwanted email addresses.</li>
<li>Block unwanted email providers.</li>
<li>Allow specific email providers. 
.</li>
</ul>
Operational Features :
<ul>
<li>Manage complete form CSS.</li>
<li>Customize email to send OTP.</li>
<li>Supportcode to change the language.</li>
<li>Generate OTP attempts log for review.</li>
<li>Customize popup and inline form layout.</li>
<li>Create Menus, Links or auto-popup the form.</li>
<li>Manage complete form template without CSS.</li>
<li>Use or customize from 27 ready-made templates.</li>
<li>Use multiple inline or popup forms on a single page.</li>
<li>Integrate external functions and custom support code.</li>
<li>Operate through Menu editor, Shortcode or HTML code.</li>
<li>Zero dependency on other APIs as Google/Facebook/B2B etc.</li>
<li>Provide EASY and SECURE Login/Register/Verification features. 
.</li>
</ul>
Additional Features :
<ul>
<li>Add multiple layers of security and access control.</li>
<li>Re-verify logged-in users before sensitive actions.</li>
<li>Provide subscriber/member access without login or registration.</li>
<li>Lock user accounts to re-verify OTP without logout or session loss.</li>
</ul>
.
Compatible With :
<ul>
<li>Youzify</li>
<li>Profilegrid</li>
<li>Forminator</li>
<li>ARMember</li>
<li>ProfilePress</li>
<li>Buddypress</li>
<li>Profile Builder</li>
<li>MemberPress</li>
<li>User Meta Lite</li>
<li>WooCommerce</li>
<li>Ultimate Member</li>
<li>User Registration</li>
<li>RegistrationMagic</li>
<li>WP User Manager</li>
<li>Pie Register–Basic</li>
<li>Login/Signup Popup</li>
<li>Paid Memberships Pro</li>
<li>Paid Member Subscriptions</li>
<li>N-Media WP Member Registration</li>
<li>And Many More . . . 
.</li>
</ul>
The plugin can act as a standalone authentication system or integrate smoothly with your favorite membership and user management tools/plugins.
The facilities of this plugin will put your website far ahead of everyone else. Install it, and use its features to check out the effects.
This free version includes all Addon+Prime features. Premium access is exclusive.
<a href="https://youtu.be/uxmdxKb2vTI" rel="nofollow ugc">See the plugin intro video (version:5.2.6)</a>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/uxmdxKb2vTI?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>Feedback & Support</h3>
Your feedback helps make this plugin even better. 
Share your suggestions or report issues directly 
to the plugin author : <a href="mailto:Mr.Chandan.Shrivastava@gmail.com" rel="nofollow ugc">Mr.Chandan.Shrivastava@gmail.com</a>

Email OTP Authenticator – for Login, Registration or 2FA, RWL, RWA Services

Use an OTP to Login, Register, 2FA OR allow interim premium access WITHOUT Login, even WITHOUT Account. It is FAST, FRIENDLY, SMART, SMOOTH & SECURED.

OTP Add-on for Booking Calendar vs Email OTP Authenticator – for Login, Registration or 2FA, RWL, RWA Services