From 6ade8306052678db05308484dd128aa4ad9f5398 Mon Sep 17 00:00:00 2001
From: Hongbo Wu <hongbo@omnivore.app>
Date: Thu, 23 Mar 2023 18:33:32 +0800
Subject: [PATCH] To in the envelope will always be a single-element array

---
 packages/inbound-email-handler/src/index.ts | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/packages/inbound-email-handler/src/index.ts b/packages/inbound-email-handler/src/index.ts
index 201f5a4fb..2b83f3d77 100644
--- a/packages/inbound-email-handler/src/index.ts
+++ b/packages/inbound-email-handler/src/index.ts
@@ -22,6 +22,11 @@ interface SaveReceivedEmailResponse {
   id: string
 }
 
+interface Envelope {
+  to: string[]
+  from: string
+}
+
 const signToken = promisify(jwt.sign)
 
 const NEWSLETTER_EMAIL_RECEIVED_TOPIC = 'newsletterEmailReceived'
@@ -71,11 +76,8 @@ const saveReceivedEmail = async (
 export const parsedTo = (parsed: Record<string, string>): string => {
   // envelope to contains the real recipient email address
   try {
-    const envelope = JSON.parse(parsed.envelope) as Record<
-      string,
-      string | string[]
-    >
-    return envelope.to.toString().split(',')[0] || parsed.to
+    const envelope = JSON.parse(parsed.envelope) as Envelope
+    return envelope.to[0]
   } catch (err) {
     return parsed.to
   }