Set up your workflow
1
Open the Workflows tab
Log in to your Cal ID account, then click Workflows in the left sidebar.From here you can use a default template for Email, SMS, or WhatsApp, or build a custom template with your own variables. To start a custom template, click + Add Custom.

2
Name and assign the workflow
Before adding any logic, identify what this workflow is for:
- Name your workflow: Give it a clear title (for example, “My 24-Hour Reminder”).
- Select event types: Check the boxes for the specific meetings this workflow should apply to.

3
Choose a trigger
The trigger is the event that starts the automation. Pick one from the dropdown:

4
Add an action
The action decides how you reach out. An action is a designated notification type, for example a reminder to an attendee, a specific phone number, or an email address. Pick one from the dropdown:
When everything looks right, save the workflow.

Your workflow is live. Cal ID will now send the message automatically whenever the trigger fires on the assigned event types.
Custom template
You can use the default template for your messages, or switch to a custom template and add your own inputs as variables. For a full walkthrough, see Customizing your workflow.Dynamic text variables
Insert dynamic text into your messages using variables. Each one is replaced with real booking data when the message is sent.If the location is a video conferencing app,
{{location}} resolves to ‘Zoom’ or ‘Google Meet’ and {{meeting_url}} is the actual link to the meeting. If the location is not a video conferencing app, {{meeting_url}} is empty.Send from your own WhatsApp number
If you choose Action = WhatsApp, the message is sent by default from the Cal ID WhatsApp number. To send from your own WhatsApp number, integrate WhatsApp Business from the Cal ID App Store. See Integrate WhatsApp Business for the full setup. Once WhatsApp Business is integrated:1
Create or edit a workflow
Open the workflow you want to use, or start a new one.
2
Select a WhatsApp action
Choose an action related to WhatsApp.
3
Choose your number and template
Select your WhatsApp Business phone number, then pick an approved WhatsApp template (created and approved in Meta).
4
Save the workflow
Save your changes.

Next steps
Customize your messages
Personalize sender names, subject lines, and booking variables.
Integrate WhatsApp Business
Send reminders from your own WhatsApp Business number.
Track workflow status
See which messages were sent for each booking.
Measure performance
Review how your automated messages are performing.