Reach attendees on the messaging app they actually open.
- Confirmations, reminders and cancellations sent on WhatsApp
- Phone numbers read from a field of your sign-up form
- Delivered through your own Twilio account
What you can do with it
- Send a WhatsApp confirmation when someone signs up or buys a ticket, or moves from the waitlist to going.
- Send a reminder with the reminder email, once per date, at the time set in your email settings.
- Send a short note when an attendee cancels with their email link, or when a refund cancels their ticket.
- Use templates approved by WhatsApp, with the attendee’s name, the event, the date, the venue and the link.
- Check your setup with a test message to your own phone.
How to set it up
- Add a phone field to your sign-up form: a Pro custom field with the key
phone, collected from the attendee registration. - Go to HappenBoard → Integrations and click Configure on the WhatsApp (Pro) card.
- Paste your Twilio Account SID and Twilio Auth Token, then your WhatsApp sender number with its country code.
- Tick the messages you want under Subscribed events and click Save changes.
- Under Send test message, type your number and click Test message.
To message real attendees, add the Content SID of each approved template. The WhatsApp guide explains the templates and their variables.
What you need
- A Twilio account with a WhatsApp sender. The Twilio sandbox is enough for tests.
- For real attendees, a WhatsApp Business sender approved by Twilio and approved message templates.
- HappenBoard Pro, for the integration and the phone custom field.
- Attendees who give their number with the country code.
Free and Pro
The free plugin sends its attendee emails: confirmation, reminder, cancellation and date changes. It sends no WhatsApp message.
WhatsApp messages and the custom fields that collect the phone number come with HappenBoard Pro. Twilio bills the messages to your own account.
Good to know
- A number without a country code, such as one starting with a single 0, is skipped. That attendee still gets their emails.
- Outside the Twilio sandbox, WhatsApp accepts only approved templates, unless the attendee wrote to you in the last 24 hours.
- When your team cancels someone on the Attendees screen, no WhatsApp message is sent.
- Messages do not follow the attendee’s language setting: write your templates in the language of your audience.
- Mention WhatsApp messages next to the phone field, since typing a number counts as agreeing to receive them.
