Calendly and WhatsApp: automatic reminders for every booking
Connect Calendly: every booking lands in the Agenda, with WhatsApp/SMS/email reminders before the meeting and moves and cancellations handled for you.
What you get by connecting Calendly
Every booking lands in the SendApp Agenda, with nothing to enter by hand.
Messages go out on their own before and after the appointment or the stay, following the rules you set.
The customer joins your contacts: you can write to them again after the appointment.
How to connect Calendly to SendApp
Steps taken from the official SendApp guide, read on 19 September 2026.
How it works
SendApp connects to your Calendly account and reads the bookings with their invitees. On a paid Calendly plan it also registers a webhook, so every new booking, move or cancellation arrives instantly; on the free plan the read runs every few minutes, with no error.
Connecting
- 1Open Apps > Calendly and press Sign in with Calendly.
- 2On Calendly, allow SendApp to read your bookings and event types: you are back in SendApp straight away and the Agenda fills up.
- 3Alternatively open Advanced and paste a personal access token created in Calendly under Integrations > API and webhooks.
Ask for the phone number
WhatsApp and SMS reminders need the invitee's phone: add a phone question to the event in Calendly. The app page tells you how many upcoming appointments have none.
Reminders
- 1Add up to five rules: how long before the appointment, the channel and the message.
- 2In group events every invitee gets their own reminder.
Settings
Choose how many days ahead to import, which event types, the contact tag, and whether to import past appointments too (off by default).
Check
The app page lists the upcoming appointments with their planned reminders and the sync history.
An example message
Hi Julia, a reminder of your appointment tomorrow at 3pm. If something comes up, reply here and we will move it.
Illustrative example: you write the text.
More integrations in the same family
Frequently asked questions
Connect Calendly to SendApp today
Connect Calendly: every booking lands in the Agenda, with WhatsApp/SMS/email reminders before the meeting and moves and cancellations handled for you.