diff --git a/index.ts b/index.ts
index 83234d4..72f1f27 100644
--- a/index.ts
+++ b/index.ts
@@ -18,7 +18,14 @@ app.get('/', (req, res) => {
 
 const functions = getFunctions();
 
-app.use('/api/inngest', serve(inngest, [...functions]));
+app.use(
+  '/api/inngest',
+  serve(inngest, [...functions], {
+    signingKey: process.env.IS_PULL_REQUEST
+      ? process.env.INNGEST_BRANCH_SIGNING_KEY
+      : process.env.INNGEST_SIGNING_KEY,
+  })
+);
 
 app.listen(PORT, async () => {
   console.log(`✅ Server started on localhost:${PORT}
diff --git a/inngest/client.ts b/inngest/client.ts
index 1320a6e..9d080b2 100644
--- a/inngest/client.ts
+++ b/inngest/client.ts
@@ -5,5 +5,8 @@ import type { Events } from './events';
 export const inngest = new Inngest({
   name: 'Demo App',
   schemas: new EventSchemas().fromRecord<Events>(),
+  eventKey: process.env.IS_PULL_REQUEST
+    ? process.env.INNGEST_BRANCH_EVENT_KEY
+    : process.env.INNGEST_EVENT_KEY,
   env: process.env.RENDER_GIT_BRANCH,
 });
diff --git a/inngest/emails.ts b/inngest/emails.ts
index 8fd1fdf..4f2e98a 100644
--- a/inngest/emails.ts
+++ b/inngest/emails.ts
@@ -21,3 +21,14 @@ export const sendUpgradeEmail = inngest.createFunction(
     };
   }
 );
+
+export const sendChurnEmail = inngest.createFunction(
+  { name: 'Send Churn Email' },
+  { event: 'billing/subscription.cancelled' },
+  async ({ event }) => {
+    return {
+      success: true,
+      message: `churn email sent to user: ${event.user.id}`,
+    };
+  }
+);
diff --git a/inngest/index.ts b/inngest/index.ts
index 8a352d7..876f4e7 100644
--- a/inngest/index.ts
+++ b/inngest/index.ts
@@ -6,7 +6,6 @@ const functions = [...Object.values(emails), ...Object.values(payments)];
 
 // We use a function to do this in order to dynamically add the cron test function
 export function getFunctions() {
-  console.log('Get functions', process.env.RENDER_GIT_BRANCH);
   // Only set the cron trigger to run in production, not branch envs
   if (
     !Boolean(process.env.RENDER_GIT_BRANCH) ||
diff --git a/package.json b/package.json
index 0f314d4..c2bc9db 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
   },
   "engine": {
     "node": ">=20",
-    "pnpm": "^8.6.2"
-  }
+    "pnpm": "8.6.2"
+  },
+  "packageManager": "pnpm@8.6.2"
 }