Cal.com Reminder Emails Not Sending
Workaround available Web, self-hosted Updated November 13, 2026Based on 3 user reportsHow we research
Quick answer
Free plans only get the default reminder; custom workflows need a paid team plan, and a workflow must be attached to the right event type. Check plan, event type selection and spam folders.
Most likely fix: Check the workflow
How to fix it
Try these in order — the most common fix is first.
1. Check the workflow
- Open Workflows and edit the reminder workflow
- Confirm the right event types are selected and the trigger is correct
- Make sure it is active
Did this fix it?2. Check your plan
- Custom workflows and SMS reminders need Teams or higher
- On Free only the default email is sent
Did this fix it?3. Check spam and sender
- Ask attendees to check spam and whitelist Cal.com
- Use a verified sender address if you customise it
Did this fix it?4. Self-hosted: verify email
- Check SMTP/email environment variables and server logs for send errors
Did this fix it?
Symptoms
Attendees say they got no reminder and miss the meeting.
Why it happens
- Custom reminders are a paid-plan feature
- Workflow not attached to the event type
- Emails landing in spam
- Self-hosted instance without a working email provider
This guide also covers
- cal.com reminder not sent
- cal.com workflow not working
- cal.com email notifications
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