Kaizen #201 - Answering Your Questions | Webhooks, Functions, and Schedules

Kaizen #201 - Answering Your Questions | Webhooks, Functions, and Schedules


Hello everyone!
Welcome back to another post in the Kaizen series!

We are incredibly grateful for all the feedback we received, and as promised, we will answer all the queries in this Kaizen series.

Last week, in our 200th post, we addressed one of the requests for a detailed guide on Token generation using the Python SDK.

This week, as requested by a user, we will do a detailed comparison between Webhooks, Functions, and Schedules.

Let's dive right in!

In modern CRM automation and business workflows, three key mechanisms stand out for executing custom logic and integrations—Webhooks, Functions, and Schedules. While these might seem similar at first glance, each serves distinct purposes and offers unique advantages depending on your use case.

Understanding when and how to use each approach is crucial for building efficient, scalable, and maintainable automation systems. This Kaizen post will help you navigate these choices with practical use cases and clear guidelines.
Let's see what each of these features means.


1. Webhooks

Event-driven external communication

Webhooks are HTTP callbacks that automatically trigger when specific events occur in your CRM system. Think of them as "reverse APIs" where instead of your app polling for changes, the system pushes notifications to your external endpoints.

Key Characteristics

  • Trigger: Can be triggered by workflows, approvals, and real-time event-based(record creation, updates, deletions).
  • Execution: External to the CRM platform. Send HTTP POST/GET requests to an external URL.
  • Response time: Near-instantaneous.
  • Reliability: Dependent on external endpoint's availability.

When should you use Webhooks?

  • Send simple, real-time notifications to external systems.
  • These are lightweight notifications where you just want to inform external systems that something happened in your CRM, but do not expect a response.
  • Trigger immediate actions in the external app.
  • When data changes happen in your CRM, you can use webhooks to inform the external system of the same and trigger specific actions in the external system.
  • Live notification and alerts.
  • Webhooks can send live notifications and alerts when an important event occurs in CRM. You can use multiple channels like SMS, emails, push notifications, etc., to notify of the event.

Examples

  • Notifying an external system when a lead is converted.
  • Triggering payment processing when invoice status changes.
  • Sending SMS immediately when a high-priority lead is created.

2. Functions

Server-side custom logic

Functions in Zoho CRM are custom code snippets written in Deluge scripting language to execute your custom business logic.

Key Characteristics

  • Trigger: Can be triggered by various events or called directly through APIs, workflows, or button actions.
  • Execution: Internal to the CRM platform as they run on Zoho CRM servers.
  • Response time: Fast.
  • Reliability: High, with in-built error handling mechanisms.
  • Support full Deluge scripting.
  • Can call external APIs and handle responses.

When should you use Functions?

  • Complex business logic that requires access to CRM data
    • Involves complex decision-making processes to compare and analyze data from multiple modules of your CRM or other service. Functions work great here as they can access data via APIs easily.
  • Data validation and transformation
    • You can check for data correctness to align with your business rules and convert them to the right format to use them as necessary at various places. Functions are ideal as they can validate against existing CRM data and apply complex transformation logic in real-time.
  • Custom workflow actions
    • You can orchestrate functions to perform multi-step processes across modules that standard workflow actions cannot perform.

Examples

  • Validating data against business rules before saving.
  • Implement approval workflows with multiple stakeholders.
  • Triggering complex multi-module workflows like converting a lead to a contact and account, triggering workflow rules for the new account, adding a follow-up task to the converted lead, and adding it to marketing campaigns.

3. Schedules

Time-Based Automation

Schedules in Zoho CRM are functions that are executed automatically at specific intervals of time. They are perfect for batch processing, data synchronization, regular clean up, and sending routine reminders.

Key Characteristics

  • Trigger: Time-based schedules like a cron job.
  • Execution: Internal to the CRM platform.
  • Response time: Depends on the schedule frequency.
  • Reliability: High, with automatic retry mechanisms.
  • Support full Deluge scripting.
  • Supports OAuth-based API calls and data fetching from internal or external systems.

When should you use Schedules?

  • Batch data processing
    • Instead of processing records one at a time as they are created or updated, you can batch them all in groups to be processed later, say after business hours. This is not only efficient but also does not impact system performance during peak hours.
  • Synchronize data
    • You can run a schedule to compare data between your CRM and external system and regularly update them to have up-to-date information on both systems.
  • Periodic reporting and analytics of your data
    • Create reports, update dashboards, and analytics like weekly sales performance, at set intervals to ensure your teams and stakeholders have the right data.
  • Maintenance and housekeeping
    • These are the usual behind-the-scenes tasks like archiving old data, deleting temporary files, etc., once a week to keep your CRM system running smoothly.

Examples

  • Daily data backup and archival
  • Weekly sales performance reports
  • Monthly lead scoring recalculation
  • Quarterly data cleanup and deduplication
  • Sync product data in CRM with an external ERP system every eight hours.
Here is a comparison table to help you decide which feature to use.

Feature
Webhooks
Functions
Schedules
Trigger
On CRM events(real-time)
On CRM events/manually
On a schedule(time-based)
Custom Logic
No(send data only)
Yes(custom script in Deluge)
Yes(deluge, time-driven logic)
External Calls
Limited(webhook only)
Extensive(APIs, CRM modules)
Extensive APIs, CRM modules)
Data Manipulation
No
Yes
Yes
Best For
Simple push notifications
Complex workflow automation
Recurring tasks
Examples
Notifying ERP, sending SMS
Auto-updating field, triggering emails
Daily follow-up, weekly performance report

Best Practices

  • Keep it simple. When you need a quick, no-frills integration, go with webhooks first.
  • Put your smarts in one place. Use functions whenever you need custom business rules or to tie together different parts of your CRM.
  • Schedule wisely. If you have regular batch jobs or routine tasks, set them to run on a schedule, ideally during off-peak hours so your team's daily operations are not slowed down by behind-the-scenes processes.
  • Watch and learn. Build in error logging and notifications for both functions and scheduled jobs, so you can catch and fix problems before they snowball.
  • Stay efficient. Remember that functions and scheduled scripts count against your API and execution limits. So, write lean code and keep an eye on your usage.

Begin by pinpointing your unique needs, weigh the pros and cons of each option, and be open to mixing methods when necessary. True automation success depends on solid error handling, ongoing monitoring, and regular upkeep.
We hope you found this post useful. Let us know if you have questions in the comments or drop us an email at support@zohocrm.com.

Cheers!

-----------------------------------------------------------------------------------------------------------------------------------

IdeaPrevious Kaizen post - Token generation in Python SDK

    • Sticky Posts

    • Kaizen #198: Using Client Script for Custom Validation in Blueprint

      Nearing 200th Kaizen Post – 1 More to the Big Two-Oh-Oh! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.

    • 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

    • Kaizen #222 - Client Script Support for Notes Related List

      Hello everyone! Welcome to another week of Kaizen. The final Kaizen post of the year 2025 is here! With the new Client Script support for the Notes Related List, you can validate, enrich, and manage notes across modules. In this post, we’ll explore how

    • Kaizen #217 - Actions APIs : Tasks

      Welcome to another week of Kaizen! In last week's post we discussed Email Notifications APIs which act as the link between your Workflow automations and you. We have discussed how Zylker Cloud Services uses Email Notifications API in their custom dashboard.

    • Kaizen #216 - Actions APIs : Email Notifications

      Welcome to another week of Kaizen! For the last three weeks, we have been discussing Zylker's workflows. We successfully updated a dormant workflow, built a new one from the ground up and more. But our work is not finished—these automated processes are

    • Recent Topics

    • %PaymentLink%

      Does not work. Software creates a BAD link. ....and yes payment options are turned on. Link on the invoice pdf once opened will work but this template is a joke.

    • World date & time format

      Hello, Is there a timeline to get the worldwide used date and time format ? I mean not the american one... I mean day month year, and 24 hours clock. Regards

    • Allow Global Admin to access/edit all forms without changing owners

      Hi there, Please consider adding a feature where the Global Admin of the account an automatically access/edit any form in the Company Account. I'm the Global Admin on our Zoho One plan, and we have multiple users that use/create forms. But for me to access

    • Placeholder for Agent Signature in Email Templates

      Dear Zoho Team, I hope this message finds you well. We currently face a limitation when designing email templates in Zoho Desk. While we can create email templates and include a footer at the end, the agent signature is always appended by default at the

    • Actual vs Minimum

      Hi all, I am sure I am not the only one having this need. We are implementing billing on a 30-minute increment, with a minimum of 30 minutes per ticket. My question is, is there a way to create a formula or function to track both the minimum bill vs the

    • Dont want to list inactive items.

      If an item is made inactive, there is no point in showing it in the item list. Please provide an option to hide all inactive items in 'Preferences'. 

    • Can Zoho Marketing Automation send OTP codes via WhatsApp during user registration?

      The flow I would like to implement is: A user signs up in the mobile app and enters their phone number. The system generates a one-time verification code (OTP). The OTP is sent to the user via WhatsApp message. The user enters the code in the app to confirm

    • Cannot give public access to Html Snippet in Zoho Creator Page

      Hi, I created a form in Zoho Creator and published it. The permalink works but I want to override the css of the form. (style based URL parameters is not good enough) So I created a page and added an Html snippet. I can now override the css, which is

    • Related lists New option in missing

      hi I have created quite a few modules and added as related lists to my main module. Some have new, some dont I can not see why?

    • Where to show Customization Field ?

      Dear Sir, I have made some New Field in Item Field Customisation. Now I don't require that field in Estimate, Sales Orders etc. I just wants that field in Sales Invoice to Show/Hide... Is that possible ?

    • What's New in Zoho Analytics - February 2026

      Hello Users! We're back with another round of updates for Zoho Analytics. This month's release focuses on giving you greater flexibility in how you visualize, manage, and act on your data - with new features like custom visualizations, remote MCP server,

    • Zoho Books (and other Finance Suite Apps) - Clickable Item Name on Invoices and Reports

      Hi Zoho Books team, It would be really helpful if the Item Name on Reports were clicable to take me to the item. The same on Invoices, often I am looking at an invoice and I want to look at the deails of a product. A link here would be helpful to jump

    • ZOHO Reports are taking longer time to get refresh

      Hi Team, Since last few days, I'm facing issues in getting updated reports. For eg: right after making an expense entry or even posting a journal, it is taking longer then expected for the updated reports. Refer below: "You are viewing the report that

    • Display actual mileage on an invoice

      My users are creating expenses in Zoho expense. For example, they expense 10 miles and get paid 7 dollars (10 miles * IRS rate of .70). If I look at the expenses in Zoho Books, it does show them at 10 miles at .70 cent When I add these expense to an invoice

    • Can't change form's original name in URL

      Hi all, I have been duplicating + editing forms for jobs regarding the same department to maintain formatting + styling. The issue I've not run into is because I've duplicated it from an existing form, the URL doesn't seem to want to update with the new

    • Can you create relationships BETWEEN contacts within the same module

      I am setting up my CRM, and I want to have a way to connect contacts within the same module.  Is there a way to do this?  If not - how do I decide how to split up contacts to make connections?  What are best practices for this? We have clients who need

    • Zoho Projects - Cloning a task does not trigger task workflow when created

      Hello! I have a Project where my team uses a set of tasks from a tasklist as templates, so we could simply clone it and drag it to another list in kanban view to avoid creating a new one from scratch. The process works well, but after cloning it the new

    • Establishing Relationships among contacts/leads with Reciprocal

      Is there any way to create a relationship between contacts and leads and be able to go into just one of the files and have it reciprocate the entry in the other file? For example, if I have two people say John and Jane Smith who are husband and wife.

    • Function and workflow to create customer payment and send receipt

       I am attempting to set up a workflow/custom function for the automatic creation of a customer payment and sending the email receipt, but am receiving the error "Improper Statement Error might be due to missing ';' at end of the line or incomplete expression" I've been over everything several times and cannot see where the error is (code is copied into the attached document).  I haven't used custom functions before with Deluge, so it's very likely something very simple, or I've completely mucked

    • Disable Sign Up option in Zoho Creator Portal and show only Sign In page

      Is it possible to disable the Sign Up option in a Zoho Creator portal? The requirement is to show only the Sign In page and completely remove or hide the Sign Up page, so users cannot create accounts directly from the portal login page. Is there any setting

    • Restrict Payment Methods

      Allow us to restrict certain payment methods specific for each customer.

    • How to install Widget in inventory module

      Hi， I am trying to install a app into Sales Order Module related list, however there is no button allow me to do that. May I ask how to install widget to inventory module related list?

    • Introducing Formula Fields for performing dynamic calculations

      Greetings, With the Formula Field, you can generate numerical calculations using provided functions and available fields, enabling you to derive dynamic data. You can utilize mathematical formulas to populate results based on the provided inputs. This

    • Can I view the KB in the same way as a customer logged in as my Agent?

      Sorry if this seems a mad question.  I have some Articles that I want to be seen by my Agents and the status of these is set to Agents only.  We also have some that are set to Public. When I sign in with my private email address (as a customer) I can

    • What’s New in Zoho Inventory — Latest Features, Integrations & Updates | December 2025

      Zoho Inventory has evolved significantly over the past months, bringing you smarter, faster, and more connected tools to streamline your operations. Whether you’re managing multichannel sales, complex fulfillment workflows, or fast-moving stock, our newest

    • Push Notification for New Bookings in Zoho Bookings App

      when a someone schedules an appointment through the booking page, is there any option to receive a push notification in the mobile app?

    • Which user's capacity is used for Shared Mailbox storage?

      We use shared mailboxes at our company, and their size is increasing daily. Which user(s)'s total mailbox limit is being used up by this space?

    • Incorrect Functioning of Time Logs API (Version 3)

      We need to fetch the list of time logs for each task for our company internal usage. We are trying to achieve it by using the next endpoint: https://projects.zoho.com/api-docs#bulk-time-logs#get-all-project-time-logs Firstly, in the documentation the

    • Evernote (ENEX) import limitations

      I have been with Evernote since 2010, but the latest price increase is ridiculous. I am currently testing Zoho Notebook as a replacement. I am impressed so far - if it were not for critical need to import legacy Evernote notes, I would 100% migrate to

    • Print a document from Zoho Writer via Zoho Creator

      If i use the code below i can get writer to create a new document or email it to me but i want to be able to print it directly from the browser and not have to send it via email and then print. Below is the code im using. Attached options form zoho writer

    • Can I create a CODE 128 custom field for my items in Zoho Inventory and then use it for generating Sales Orders?

      Can anyone helps me, I don't want to use the SKU code for scanning my products.  ​Because all my products have a CODE-128 label attached.

    • Prevent duplicate with custom fields?

      I was wondering something about custom field/custom modules in Zoho Desk. For some reason you can make a custom field mandatory but not unique? For example, if I create a custom module to manage equipment and renewal and make a field serial number no

    • Multiple Vendor SKUs

      One of the big concerns we have with ZOHO Inventory is lack of Vendor Skus like many other inventory software packages offer. Being able to have multiple vendor skus for the same product would be HUGE! It would populate the appropriate vendor Sku for

    • Create Invoice automated with Package

      Does anyone knows how to create an invoice from a SO when we have created the package? We do these manually. and validate that the product packed is the product invoiced (if the order is partially packed) Regards, JS

    • Unable to integrate Zoho Projects and Zoho Workdrive

      I'm a Zoho One subscriber. When I go to Zoho Projects > Settings > Marketplace > Zoho Apps I do not see an option for Zoho Workdrive but I do see one for Zoho Docs that does nothing. How do I get the option to integrate Zoho WorkDrive and Zoho Proje

    • Disable payment thank-you emails

      Hello, can someone please tell me how to disable sending of the "Payment Thank-You" emails? 

    • Internal Fillable Contract with Zoho Writer (Before Sending to Client)

      Hi everyone, I’m trying to automate the following process in Zoho CRM and would appreciate some guidance. Process: When a Deal moves to a specific stage, CRM triggers an automation. CRM sends a contract template to an internal team member so they can

    • How to backdate record payment for the invoice

      I would like to record a payment which happened 2 days ago, but I am not able to select any date later than today. I backdated the invoice, too, but it doesn't change anything

    • Help with deluge script

      Hi Community, this is my first Deluge script. I've pieced it together from reading various articles I want to use it in a workflow to 1 Convert a lead to a contact 2. Create a record in a custom module Below is what I have got so far but it does not fire

    • Marketer's Space: Why email authentication matters in Zoho Campaigns

      Welcome back to another post in Marketer's Space! If you've recently started using Zoho Campaigns, you've probably come across terms like SPF and DKIM. You may have also noticed emails that show "via zcsend.net" in Gmail when testing or sending campaigns.

    • Next Page