Step-by-step guide to track your Cal.com bookings with PiMMs using Zapier

Want to track exactly where your Cal.com bookings come from?

With PiMMs + Zapier, it only takes a few minutes — no code needed.

1. Create a new field in your form

1. Log in to your Cal.com dashboard
2. Open the event you want to track and click Edit
3. Go to Advanced → Booking Questions

4. Click Add a question and fill in the following:

• Type: Short text
• Identifier: pimms_id
• Label: pimms_id
• Required: No
• Enable: “Disable input if URL identifier is prefilled”
• Disable: “Show on booking page”

5. Save the form

2. Create your PiMMs tracking link

1. Go to your PiMMs dashboard
2. Create a short link pointing to your Cal.com booking URL
3. Enable Conversion tracking

Example:

https://pim.ms/my-booking-page

Tip: Use this link in your ads, emails, and social posts.

3. Book a test meeting

1. Open your PiMMs link in a new tab
2. Book a dummy meeting with a test email

This step is needed for Zapier to detect the form fields.

4. Connect Cal.com to PiMMs in Zapier

1. Go to Zapier
2. Open the Cal.com × PiMMs Zap template
3. Click Use this Zap

Trigger setup

• Trigger app: Cal.com
• Event: Booking Created
• Connect your Cal.com account

• Select your test booking from step 3

Action setup

• Action app: PiMMs
• Event: Create Conversion

• Connect your PiMMs account

Then map the fields:

• Click ID → pimms_id
• Email → attendee’s email
• External ID → attendee’s email (again)
• Name → attendee’s name

Publish your Zap.

5. Test your setup

1. Open your PiMMs link in a new tab
2. Book another test meeting
3. Check your PiMMs dashboard

You should see a new conversion tracked automatically.

6. Troubleshooting tips

• If someone books multiple times using the same email, only the first meeting is counted as a conversion.
• Make sure the pimms_id field is correctly added to the Cal.com form
• Check that your Zap is published and active
• Look at Zapier Task History if a step fails

Best ways to share your Cal.com booking form

Option A — Create a PiMMs short link

Use this if you're sharing your Cal.com link via email, ads, QR codes, or social media.

1. Go to PiMMs
2. Create a short link pointing to your Cal.com booking page
3. Enable conversion tracking
4. Share the link wherever you want

Example:

https://pim.ms/your-link

Option B — Use Cal.com on your website

Add this script in your site’s or page head in all the pages of your website:

<script defer src="https://cdn.pimms.io/analytics/script.detection.js"></script>

Case 1 — Simple link

• Add ?pimms_id=1 to the end of your Cal.com URL

Example:

https://cal.com/yourname/meeting?pimms_id=1

Case 2 — Embedded calendar

📘 How to embed Cal.com →

For popup embeds

• Use the data-cal-link attribute
• Add ?pimms_id=1 at the end of the link

<button data-cal-link="yourname/meeting?pimms_id=1">Book now</button>

For inline embeds

• Add this additional script to the page in all the pages of your website:

<script src="https://cdn.pimms.io/analytics/script.expose.js"></script>

• Add ?pimms_id=${window.pimms_id} to your calendar link

Example:

Cal.ns["30min"]("inline", {
  elementOrSelector: "...",
  calLink: `alexandre/30min?pimms_id=${window.pimms_id}`
});

You're all set 🎉

Every Cal.com meeting booked via your PiMMs links will now be tracked — with full attribution and analytics.

👉 Create your first PiMMs link