SMSReminder Appointment Booking & Reminders for Google Calendar

Turn your WordPress site into a booking engine using your Google Calendar.

Let clients book appointments instantly based on your real-time availability without back-and-forth emails or calls.

The plugin automatically checks your Google Calendar for existing events and only allows clients to book open time slots.

Easily add a booking page or embed a customizable booking button anywhere on your site to start accepting bookings in minutes.

Create different appointment types, control availability, and customize your scheduling experience.

Free to install and use with your Primary Google Calendar connection.

What’s included in this free plugin

• Connect Primary Google Calendar
• Real-time availability checking
• Booking page and customizable booking button
• Multiple appointment types
• Client-friendly booking experience on any device

Need automated SMS appointment reminders or want to connect additional Google Calendars beyond your Primary? Both are available as separate paid add-on plugins from smsreminder.app — they extend this free plugin when you need them.

How it works

1. Install the plugin
2. Connect your Primary Google Calendar
3. Set your appointment availability and appointment types
4. Add your booking page or “Book Now” button
5. Start accepting appointments instantly

Perfect for appointment-based businesses

The free booking plugin works for cleaning services, auto detailing, law firms, real estate agents, landscapers, beauty professionals and stylists, therapists, fitness coaches and personal trainers, photographers, pet groomers, tutors, music teachers, life and business coaches, consultants, accountants and bookkeepers, and mobile service providers — any appointment-based business that wants a clean Google Calendar booking experience.

Why choose this plugin

• Free Google Calendar appointment booking, no time limit
• Real-time availability — no double-bookings
• Add a booking button anywhere on your site
• Simple booking calendar — most users are live in under 5 minutes
• Client-friendly booking experience on any device
• Multiple appointment types and customizable availability
• Optional add-on plugins available from smsreminder.app for SMS appointment reminders and additional Google Calendars

External Services

This plugin connects to the SMS Reminder service to enable booking functionality and SMS notifications.

Service details

• Service: SMS Reminder
• Marketing website & support context: https://www.smsreminder.app/
• Booking web app (login / OAuth): https://www.smsreminder.co/
• API base URL: https://go-interactive.herokuapp.com/

What data is sent and when

The plugin communicates with the SMS Reminder API in the following cases:

• On connection (administrator-initiated):

  • Site URL
  • Callback URL
  • Platform instance identifier
  • Temporary authentication state

• After connection, in WordPress Admin (administrator-initiated):

  • Authenticated API requests (using the stored access token) to fetch booking configuration, upcoming appointments and related customer fields shown on this plugin’s settings screen, and other data needed for setup and previews.

• On the public site when the booking block is present:

  • Each page view that renders the block can trigger a server-side request to retrieve embed parts for the booking button. Site visitors do not need to click the button for that request to occur.

Only the administrator starts connection and plugin setup. After the site is connected, normal page loads, not only explicit clicks in the dashboard, can cause your server to contact the SMS Reminder API when booking content is embedded on a page.

Site administrators: Information on the Settings → SMSReminder Booking (for example customer name, phone, or message on upcoming appointments) is loaded from your SMS Reminder account over the API for display in WordPress Admin. Treat it as remote data governed by SMS Reminder’s policies, not as data this plugin independently collects from site visitors.

Why this is needed

This communication is required to:
– Link your WordPress site to your SMS Reminder account
– Generate booking interfaces
– Enable automated SMS reminders and confirmations

Terms and privacy

• Privacy Policy: https://www.smsreminder.app/privacy-policy
• Terms of Service: https://www.smsreminder.app/terms-of-service