At Cal.com, SMS and WhatsApp messages can be sent to keep attendees informed about bookings, reminders, and cancellations. While these messages can be funded through various methods (e.g., organization-level billing), credits are one of the available ways to manage usage—especially for teams and smaller accounts.
Credits are used as a flexible payment method to send:
While many organization-level accounts may fund messaging centrally or directly via integrations like Twilio, credits serve as a prepaid way to power messaging, especially on smaller plans.
The number of messaging credits available to your account depends on your plan type:
The cost depends on the recipient’s location and the delivery method:
📌 Example: If Twilio charges $0.05 per SMS to India, your effective cost is:
You can check up-to-date Twilio pricing here: Twilio SMS Pricing
Credits are charged per segment, not per message. Most SMS messages are broken into segments based on character count:
Each segment is treated as a separate message, and credits are then calculated based on the information above.
📎 Want to check how many segments your message will use?
Use Twilio’s Segment Calculator to estimate credit usage before sending.
This ensures bookings still go through, but real-time alerts may be delayed if recipients rely on SMS/WhatsApp.
Credits are not the only way SMS/WhatsApp are funded — they’re just the default mechanism for smaller accounts and teams