Webhooks make Greetu work with Make, n8n, Pipedream, Zapier, and anything else. Get real-time notifications when cards are viewed, reacted to, or replied to.
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Create a Greetu API key at greetu.io/mcp
In Make, add a "Webhooks > Custom webhook" module
Copy the webhook URL Make gives you
Register it with Greetu: POST /api/webhooks with your API key
Build your workflow: Slack notification, email alert, CRM update — anything
Register your webhook URL and choose which events to receive. That's it.
POST https://greetu.io/api/webhooks
Content-Type: application/json
X-API-Key: grtu_xxxxxxxx
{
"url": "https://hook.make.com/your-webhook-url",
"events": ["card.viewed", "card.reacted", "card.replied"],
"secret": "your_webhook_secret"
}Every webhook includes the event type, timestamp, and card data.
{
"event": "card.viewed",
"timestamp": "2026-09-10T18:30:00Z",
"data": {
"cardId": "abc123",
"visitorId": "visitor_456",
"card": {
"recipient_name": "Sarah",
"occasion": "birthday",
"sender_name": "Mike"
}
}
}Copy these patterns into your automation platform. No coding required.
When someone opens a birthday card, post a celebration message to your team Slack.
Get an email instantly when someone reacts to your card with an emoji.
When a recipient replies to a card, log it as a customer interaction in your CRM.
Add scheduled card deliveries to a shared team calendar automatically.
card.viewedRecipient opened the card
card.reactedSomeone reacted with emoji
card.repliedSomeone left a text reply
card.createdA new card was generated
card.scheduledA card was scheduled for future delivery
Upload a CSV of your team and auto-schedule birthday, anniversary, and holiday cards for the entire year.
recipient_name,occasion,scheduled_at,sender_name,theme,email,department
Sarah,birthday,2026-12-25T09:00:00Z,Mike,fun,sarah@co.com,Engineering
John,anniversary,2026-10-15T09:00:00Z,Mike,elegant,john@co.com,Marketing
Team,thank_you,2026-11-24T09:00:00Z,Mike,nature,,AllColumns: recipient_name, occasion, scheduled_at (ISO 8601), sender_name, theme, email, department
POST /api/cards/bulk-schedule
Content-Type: application/json
X-API-Key: ***
{
"csv": "recipient_name,occasion...",
"use_ai_message": true
}Schedules up to 100 cards in one call. Returns all share URLs.
Get your API key, register a webhook, and build your first workflow. No approval process. No waiting.