Title: OTP Add-on for Booking Calendar
Author: WebInk Digital
Published: <strong>23, Abril de 2025</strong>
Last modified: 23, Abril de 2025

---

Guetar plugins

![](https://ps.w.org/otp-add-on-for-booking-calendar/assets/banner-772x250.png?rev
=3279751)

This plugin **hasn’t been tested with the latest 3 major releases of WordPress**.
It may no longer be maintained or supported and may have compatibility issues when
used with more recent versions of WordPress.

![](https://ps.w.org/otp-add-on-for-booking-calendar/assets/icon.svg?rev=3279742)

# OTP Add-on for Booking Calendar

 By [WebInk Digital](https://profiles.wordpress.org/webinkdigital/)

[Download](https://downloads.wordpress.org/plugin/otp-add-on-for-booking-calendar.1.0.1.zip)

 * [Details](https://ast.wordpress.org/plugins/otp-add-on-for-booking-calendar/#description)
 * [Reviews](https://ast.wordpress.org/plugins/otp-add-on-for-booking-calendar/#reviews)
 *  [Installation](https://ast.wordpress.org/plugins/otp-add-on-for-booking-calendar/#installation)
 * [Development](https://ast.wordpress.org/plugins/otp-add-on-for-booking-calendar/#developers)

 [Support](https://wordpress.org/support/plugin/otp-add-on-for-booking-calendar/)

## Description

This plugin is an add-on for the [Booking Calendar](https://wordpress.org/plugins/booking/)
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 [SMS.to](https://sms.to) service. You must 
have an active SMS.to account and API key configured in the plugin settings to enable
SMS delivery.

### External Services

This plugin connects to an external service to send One-Time Passwords (OTP) via
SMS as part of the booking verification process.

**Service Used:** [SMS.to](https://sms.to)
 **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/

## Screenshots

[⌊OTP Settings panel in the WordPress dashboard.⌉⌊OTP Settings panel in the WordPress
dashboard.⌉[

OTP Settings panel in the WordPress dashboard.

[⌊Booking page before sending the OTP.⌉⌊Booking page before sending the OTP.⌉[

Booking page before sending the OTP.

[⌊Booking page after verifying the OTP, with the Submit button enabled.⌉⌊Booking
page after verifying the OTP, with the Submit button enabled.⌉[

Booking page after verifying the OTP, with the Submit button enabled.

## Installation

 1. Install and activate the [Booking Calendar](https://wordpress.org/plugins/booking/)
    plugin (version 10.10.2 or newer).
 2. Upload the OTP Add-on plugin files to the `/wp-content/plugins/` directory, or 
    install the plugin through the WordPress plugin screen.
 3. Activate the plugin through the ‘Plugins’ screen in WordPress.
 4. Go to **Settings > OTP Settings** to configure your SMS.to API key or email settings.

## FAQ

### Does this plugin work with any version of Booking Calendar?

No. This add-on requires Booking Calendar version 10.10.2 or newer.

### What is required to send SMS?

You will need to sign up with [SMS.to](https://sms.to) and enter your API key in
the plugin settings to send OTPs via SMS.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“OTP Add-on for Booking Calendar” is open source software. The following people 
have contributed to this plugin.

Contributors

 *   [ WebInk Digital ](https://profiles.wordpress.org/webinkdigital/)

[Translate “OTP Add-on for Booking Calendar” into your language.](https://translate.wordpress.org/projects/wp-plugins/otp-add-on-for-booking-calendar)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/otp-add-on-for-booking-calendar/),
check out the [SVN repository](https://plugins.svn.wordpress.org/otp-add-on-for-booking-calendar/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/otp-add-on-for-booking-calendar/)
by [RSS](https://plugins.trac.wordpress.org/log/otp-add-on-for-booking-calendar/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0

 * Initial release.

## Meta

 *  Version **1.0.1**
 *  Last updated **1 añu ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 4.0 or higher **
 *  Tested up to **6.8.11**
 *  PHP version ** 7.0 or higher **
 *  Language
 * [English (US)](https://wordpress.org/plugins/otp-add-on-for-booking-calendar/)
 * Tags
 * [booking](https://ast.wordpress.org/plugins/tags/booking/)[calendar](https://ast.wordpress.org/plugins/tags/calendar/)
   [otp](https://ast.wordpress.org/plugins/tags/otp/)[sms](https://ast.wordpress.org/plugins/tags/sms/)
   [verification](https://ast.wordpress.org/plugins/tags/verification/)
 *  [Advanced View](https://ast.wordpress.org/plugins/otp-add-on-for-booking-calendar/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/otp-add-on-for-booking-calendar/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/otp-add-on-for-booking-calendar/reviews/)

## Contributors

 *   [ WebInk Digital ](https://profiles.wordpress.org/webinkdigital/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/otp-add-on-for-booking-calendar/)