How to use Twilio to send appointment notification and reminder SMS in Zoho Bookings

How to use Twilio to send appointment notification and reminder SMS in Zoho Bookings

Hit no-shows out of the ballpark by combining Zoho Bookings and SMS providers.

SMS notifications help you remind customers of their appointments and reduce no-shows by reaching out where they are.

In this guide, we'll configure an SMS provider called Twilio.

Prerequisites

  • A Twilio Subscription
    • You need at least one number to send messages from. It can be a short code, your personal number, a local number, or anything else. Twilio charges monthly for phone numbers. Check out Twilio's pricing page for more details.
    • Since Twilio uses a pay-as-you-go model, there are no monthly commitments (except the sender number). The minimum recharge value is $20, and you can use it until the credits expire - Learn more about Twilio's pricing model here.

Things to Know Before Using Twilio

  • You can share your Twilio subscription amongst multiple admins (if required).
  • Twilio is responsible for everything except configuring SMS text (You can configure this inside Zoho Bookings).
  • Both single and dual way communication is possible with Twilio
  • Using Twilio, you can send messages across borders.
    • Case 1: When you send messages from a US number to an Indian number, sender IDs might change. It ensures the deliverability of messages.
    • Case 2: SenderIDs don't change when the sender and the recipient numbers belong to the same country.
  • Twilio charges for text messages on a segment basis. (1 segment = 160 Characters). For instance, if you send an SMS with 200 characters, you'll be charged for two SMS credits - Learn more about it here.
  • To find the number of SMS you'll be able to send with your top-up, use this formula:
    • Number of SMS that can be sent = (Top Up Value - Phone Number Price)/ Message Per SMS
    • Let's assume you belong to the US and recharge for $20. You've also opted for a long code that costs $1.16 (with carrier fees), the equation would look like
    • Number of SMS that can be sent* = ($20 - $1.16)/ ($0.0079) = 2200.
    • You'll be able to send approximately 2200+ SMS with this. (If you don't buy additional phone numbers in the US)
    • Note - The calculation is only an approximate estimation of the number of messages that you can send. This is because factors like carrier fees, and per-message rate change often and vary widely across different service providers.
  • Twilio credits are one-off amounts that don't expire until you use them.
  • Your Twilio account will get suspended once your account balance reaches zero. To avoid this, Twilio sends a notification to your email requesting you to refill your funds when the balance hits $5.
  • Another way to prevent your account from hitting zero you can set up an auto-recharge trigger for a minimum of $10. When your balance hits $10, you can automatically set it up to top up your account. Check out this page for setting up automatic payment triggers.
     

A2P 10 DLC Registration (only if you wish to send messages to the US)

Note - This is only necessary if you send messages to the United States. (Regardless of where you send your messages from - inside or outside the US)
  • If you send messages to the US, you should register for A2P 10 DLC. (Application to Person 10 Digit Long Code messaging protocol)
  • A2P 10DLC is a secure way to communicate with businesses and ensures that the messages are relevant to the recipients. We highly advise you to register for A2P 10 DLC Protocol as numbers without it will incur higher fees and even service disruptions from June 1, 2023. This is to comply with US messaging regulations. You can learn more about it here.
  • A2P 10 DLC registration is only possible with a Twilio premium subscription and not for trial accounts.
  • To do this, navigate to Phone Numbers > Manage > Active Numbers > Click on a Number.

  • Under Messaging Configuration, click on 'Go to 10DLC registration.'



Note - You cannot integrate multiple SMS providers to Zoho Bookings simultaneously.



Configuring Twilio with Zoho Bookings

1. Sign in to your Twilio account. (Sign up here if you don't have one)



2. You'll be redirected to the following screen once you've signed up. Check your mail inbox.


3. Your email would look like this. Confirm your account.



4. Twilio asks you to secure your account with a phone number. Enter your number and click on Send verification code/Get code via phone call depending on your choice.



5. Once you've confirmed your phone number you can fill in the onboarding form and click on get started with Twilio.



6. You'll be redirected to the Twilio dashboard.


  • 'My first Twilio account' is the account name of your Twilio SMS account. If you have multiple Twilio SMS accounts you can navigate it from here
  • The Phone numbers tab helps you to
    • Manage all your Phone numbers
    • Buy new Numbers
    • Release a Phone number
  • When you sign up for a Twilio account, you'll get $15.50. You can get a trial number using this to test their configurations before opting for a premium plan.
7. Let's get a phone number from Twilio. Click on 'Get a Twilio Phone Number.'



8. Twilio will assign you a phone number. Now let's configure Twilio with Zoho Bookings.



Note - To get a premium number, navigate to Phone numbers > Manage > Buy a Number
 
Choose which country's number you wish to get, SMS (as capability), and click search. You can click on buy to obtain the number.



9. Scroll to the bottom of Twilio's main dashboard. You'll find three fields here, Auth Token, Account SID, and your Phone number. We'll paste all this data to integrate Zoho Bookings and Twilio.'



10. Now log in to your Zoho Bookings Dashboard. Navigate to Integrations > Others > Twilio. Hover over Twilio and click on Configure.



11. Copy and paste the details from Twilio to the corresponding fields in Zoho Bookings. Once you have pasted the details, click 'Configure.'
 
Note: While pasting the phone number, remove the country calling code. In this case, my phone number was +13203628918. '+1' is the country calling code. Remove it and paste the rest (i.e., 3203628918 without any spaces/symbols in between)



12. Hover over the created Twilio connection and click enable. Reload the page if the connection is still not active. You've successfully integrated Twilio with Zoho Bookings.


Editing Your Twilio Connection

To edit your Twilio connection, hover over the Twilio integration and click on edit. Once you've made the changes, click Configure.



If you wish to remove your Twilio connection, hover over the Twilio integration and click remove.



A pop-up appears asking you to confirm. Click 'Proceed' to delete your Twilio connection.



Note - While Editing or Removing your Twilio connections, if the changes don't reflect immediately, reload the page for the changes to reflect.

Configuring SMS Notifications

To configure SMS notifications for one on one bookings, navigate to services > service notification.



To configure SMS notifications for group/ resource bookings, navigate to settings > workspaces > notifications.


You'll see two tabs here. 'For Staff' and 'For Customers.' Zoho Bookings allows you to send eight different types of SMS under each tab.



You can configure Zoho Bookings to send SMS using Twilio when you change the appointment status to
  • Booked
  • Rescheduled
  • Canceled
  • Marked As Completed
  • Marked As No Show
Alternatively, you can set up to three reminders before your appointment time.



Illustration: Let's send SMS notifications to a customer when an appointment(one-on-one) is booked.

  1. Make sure that the checkbox is enabled corresponding to the booked notification in the customer tab. It ensures that the customer receives an SMS notification when an appointment is booked.


 2. To customize the messages that will be sent, click on customize. You can change the message and insert dynamic variables like meeting info, customer name, meeting date, and more into your outgoing messages. Click 'Save' once you are done with the changes.



The customer receives the following message when an appointment is made.


Note that the message is from the number '59039000' and not my original phone number. This is because the message is sent from a US number to an Indian Number. So the original long code is replaced with this number to ensure seamless deliverability.
 
If the sender and recipient belong to the same country, then the SenderID (i.e., your phone number) doesn't change.
 
There are cases where you might want to block incoming messages. For example, customers might reply to your SMS notifications requesting a reschedule or cancellation. This breaks the flow of Zoho Bookings and introduces unnecessary manual work. If that's the case, check out this document to block all incoming messaging.

SMS Customization Recommendations

  • Since each message can accommodate only 160 characters, we recommend keeping your message crisp. Include vital info like appointment date, time, and business name.
  • Avoid using emojis in your sms. As a single emoji consumes a lot of characters.
  • We recommend you have your entire message length from 160 to 320 characters (i.e., 1 to 2 messages per message) to avoid consuming too many message credits for a single SMS.

Zoho Bookings Plans supporting this feature

Applicable in
Premium

If you want to start a trial of the Zoho Bookings Premium plan, please send an email to support@zohobookings.com including the word 'Twilio' in the subject line.

I want to try this!

    • Recent Topics

    • Are there settings for hyperlinks?

      Clicking a hyperlinked cell in Sheet creates this little pop-up with the actual hyperlink inside. Is it possible to have a 1-click link where if you click the cell it opens the link directly with no pop-up?

    • Automatically include all ticket attachments in the ticket resolution email

      Hello Zoho Community, We are implementing Zoho Desk in a real customer-facing production environment and have run into a limitation that is becoming a blocking requirement for our clients. The problem When a ticket is closed or resolved, Zoho Desk sends

    • Finding text within a ticket: Expand All or Search this Ticket

      The auto-collapse feature within a ticket is nice for screen scrolling, however it makes it difficult to find text within the ticket if the email is collapsed. In fact you cannot find text if it is collapsed. I would like to propose a feature that allows

    • Books & Desk. Client mapping

      Hi, I’ve been using Zoho Books for several years and am now looking to improve my customer service. I'm experimenting with Zoho Desk and want to sync and map my client data from Zoho Books. However, it seems that mapping requires both contacts to have

    • String handling

      If I cut a currency string from a quote and try and paste it into the Deal "Amount", it will fail unless I manually delete any commas. Dollar signs are no problem, but comma's seem to fail. Please correct this Input Validation error.

    • Feature Request - Allow Customers To Pick Meeting Duration

      Hi Bookings Team, It would be great if there was an option to allow customers to pick a duration based on a max and minimum amount of time defined by me and in increments defined by me. For example, I have some slots which are available for customers

    • YouTube Live streaming? how to? Zoom has this feature, built-in. Can't find it on zoho meetings.

      YouTube Live streaming? how to? Zoom has this feature, built-in. Can't find it on zoho meetings.

    • Feature Request - A Way To Search Item Groups

      Hi Inventory Team, I can't find any way to filter or search by fields of Item Groups. It would be great to see that functionality added. I have a use case where a single product might come from 5 or more suppliers and each supplier's item is an Item in

    • Feature Reqeust - Include MPN In Selectable FIelds

      I have noticed that the MPN is not available to show in the list view of Items. Please consider adding it as EAN, UPC and ISBN are all available, so it doesn't make much sense to exclude this similar option. Thanks for considering my feedback.

    • Feature Request - Option To Hide Default System Fields on Items

      Hi Zoho Inventory Team, As far as I know it is not possible to hid some of the defult system fields on Items, such as UPC, MPN, EAN, ISBN. A good use case is that in many cases ISBN is not relevant and it would be an improved user experience if we could

    • Making an email campaign into a Template

      I used a Zoho Campaign Template to create an email. Now I want to use this email and make it a new template, but this seems to be not possible. Am I missing something?

    • Campaigns does not work!

      I am running into so many problems trying to use Zoho Campaigns, that I am seriously considering dropping the app from my (shrinking) list of Zoho applications I actually use. Apart from having to fight the software trying to create a design and email,

    • Feature Request - Make Available "Alias Name" Field In Item List View

      Hi Zoho Inventory Team, I have noticed that the "Alias Name" field does not appear on the list of selectable columns in the Customise Columns feature in the Items module. This would be very useful to see for businesses who are using the Alias Name field

    • Cliq iOS can't see shared screen

      Hello, I had this morning a video call with a colleague. She is using Cliq Desktop MacOS and wanted to share her screen with me. I'm on iPad. I noticed, while she shared her screen, I could only see her video, but not the shared screen... Does Cliq iOS is able to display shared screen, or is it somewhere else to be found ? Regards

    • How to filter Packages in zoho inventory api

      Hi Team, I want to perform some tasks in a schedular on the packages which are in "Shipped" state. I tried to use filter_by in my api call but in return I get response as {"code":-1,"message":"Given filter is not configured"} My Api request is as follows

    • CRM

      Is anyone else experiencing this issue? Our company is not moving out of using Gmail's web app. It just has more features and is a better email program than Zoho Mail. Gmail has an extension (Zoho CRM for Gmail) that we're using but we've found some serious

    • Syncing with Google calendar, Tasks and Events

      Is it possible to sync Zoho CRM calendar, task and events with Google Calendar's tasks and events. With the increasing adoption by many major tool suppliers to sync seamlessly with Google's offerings (for instance I use the excellent Any.do task planning

    • How can i view "Child" Accounts?

      It can be very useful in our field of business to know the parent-child account relationship. However, there seems to be a shortcoming in the parent account view: no child account list. How can we view the child accounts per each account?

    • Ability to assign Invoice Ownership through Deluge in FSM

      Hi, As part of our process, when a service appointment is completed, we automated the creation of the invoice based on a specific business logic using Deluge. When we do that, the "Owner" of the invoice in Zoho FSM is defaulted to the SuperAdmin. This

    • Easily perform calculations using dates with the new DATEDIF function

      Hey Zoho Writer users! We've enhanced Zoho Writer's formula capabilities with the new DATEDIF function. This allows you to calculate the difference between dates in days, months, and years. Function syntax: =DATEDIF(start_date, end_date, unit) Inputs:

    • Adding Comments Using Workflows - How to Change User Attributed

      We have worklflows in Desk where a comment is added to a ticket based on certain criteria. It seems that the comment added is always attributed to the user who last edited the workflow. This does not make sense for us because: - It's misleading to other

    • Add Attachment Support to Zoho Flow Mailhook / Email Trigger Module

      Dear Zoho Support Team, We hope you are well. We would like to kindly request a feature enhancement for the Mailhook module in Zoho Flow. Currently, the email trigger in Zoho Flow provides access to the message body, subject, from address, and to address,

    • Conect chat of salesiq with zoho cliq

      Is there any way to answer from zoho cliq the chat of salesiq initiated by customers?

    • Les dernières avancées en saisie de données et collaboration

      Après une année dédiée à la recherche et au développement, notre équipe est prête à dévoiler des améliorations majeures pour Zoho Sheet. Ces nouveautés seront lancées par étapes afin d’en assurer une prise en main optimale. Nous commençons avec des fonctionnalités

    • Rich Text For Notes in Zoho CRM

      Hello everyone, As you know, notes are essential for recording information and ensuring smooth communication across your records. With our latest update, you can now use Rich Text formatting to organize and structure your notes more efficiently. By using

    • Implement Meeting Polls in Zoho Bookings

      Dear Zoho Bookings Support Team, We'd like to propose a feature enhancement related to appointment scheduling within Zoho Bookings. Current Functionality: Zoho Bookings excels at streamlining individual appointment scheduling. Users can set availability

    • Zoho Bookings and Survey Integration through Flow

      I am trying to set up flows where once an appointment is marked as completed in Zoho Bookings, the applicable survey form would be sent to the customer. Problem is, I cannot customise flows wherein if Consultation A is completed, Survey Form A would be

    • Service Account Admin for API Calls and System Actions

      Hello, I would like to request the addition of a Service Account Admin option in Zoho product. This feature would allow API calls and system actions to be performed on behalf of the system, rather than an active user. Current Issue: At present, API calls

    • Please can the open tasks be shown in each customer account at the top.

      Hi there This has happened before, where the open tasks are no longer visible at the top of the page for each customer in the CRM. They have gone missing previously and were reinstated when I asked so I think it's just after an update that this feature

    • How to Customize Task Creation to Send a Custom Alert Using JavaScript in Zoho CRM?

      Hello Zoho CRM Community, I’m looking to customize Zoho CRM to send a custom alert whenever a task is created. I understand that Zoho CRM supports client scripts using JavaScript, and I would like to leverage this feature to implement the alert functionality.

    • Send Whatsapp with API including custom placeholders

      Is is possible to initiate a session on whatsapp IM channel with a template that includes params (placeholders) that are passed on the API call? This is very usefull to send a Utility message for a transactional notification including an order number

    • Add Israel & Jewish Holidays to Zoho People Holidays Gallery

      Greetings, We hope you are doing well. We are writing to request an enhancement to the Holidays Gallery in Zoho People. Currently, there are several holidays available, but none for Israel and none for Jewish holidays (which are not necessarily the same

    • Keep Zoho People Feature Requests in the Zoho People Forum

      Hello Zoho People Product Team, Greetings. We would like to submit a feature request regarding the handling of feature requests themselves, specifically for Zoho People. Issue: Feature Requests Being Moved to Zoho One Zoho People feature requests are

    • ZO25: The refreshed, more unified, and intelligent OS for business

      Hello all, Greetings from Zoho One! 2025 has been a remarkable year, packed with new features that will take your Zoho One experience to the next level! From sleek, customizable dashboards to an all-new action panel for instant task management, we’ve

    • Introducing Multi-Asset Support in Work Orders, Estimates, and Service Appointments

      We’re excited to announce a highly requested enhancement in Zoho FSM — you can now associate multiple assets with Work Orders, Estimates, and Service Appointments. This update brings more clarity, flexibility, and control to your field service operations,

    • [Product Update] Locations module migration in Zoho Books integration with Zoho Analytics

      Dear Customers, As Zoho Books are starting to support an advance version of the Branches/Warehouses module called the Locations module, users who choose to migrate to the Locations module in Zoho Books will also be migrated in Zoho Analytics-Zoho Books

    • Introducing Schedules for smarter availability management

      Greetings from the Zoho Bookings team! We’re excited to introduce Schedules, a powerful enhancement to manage availability across your workspace. Schedules are reusable working-hour templates that help you define and maintain consistent availability across

    • Why Zoho Contracts Prefers Structured Approvals Over Ad-hoc Approvals

      Approvals are one of the most important stages in a contract’s lifecycle. They determine whether a contract moves forward, gets revised, or needs further discussion. The approval process also defines accountability within the organization. Zoho Contracts

    • Whatsapp Connection Status still "Pending" after migration

      Hello, I migrated my WhatsApp API to Zoho from another provider a day ago. So far the connection status is still “Pending”. There is a problem? How long does it usually take?

    • Kaizen #226: Using ZRC in Client Script

      Hello everyone! Welcome to another week of Kaizen. In today's post, lets see what is ZRC (Zoho Request Client) and how we can use ZRC methods in Client Script to get inputs from a Salesperson and update the Lead status with a single button click. In this

    • Next Page