From 6c96867a6a102ebc47cb6128dc23623ff027d92f Mon Sep 17 00:00:00 2001
From: vanhorickanthony <anthony@salesflare.com>
Date: Mon, 11 Mar 2024 13:45:32 +0100
Subject: [PATCH] fix(Workflows): Add unsubscribe header support to gmail and
 office sender. [https://github.com/Salesflare/Server/issues/10004]

---
 lib/unimail-gmail.js     | 11 +++++++++++
 lib/unimail-office365.js |  5 +++++
 2 files changed, 16 insertions(+)

diff --git a/lib/unimail-gmail.js b/lib/unimail-gmail.js
index aeedf27..0da2816 100644
--- a/lib/unimail-gmail.js
+++ b/lib/unimail-gmail.js
@@ -365,6 +365,7 @@ class GmailConnector extends EventEmitter {
      * @param {MessageRecipient[]} params.cc
      * @param {MessageRecipient[]} params.bcc
      * @param {{ name: String, url: String }[]} params.attachments
+     * @param {{ name: String, value: String }[]} params.headers - Optional headers to include
      *
      * @param {Object} options
      *
@@ -418,6 +419,16 @@ class GmailConnector extends EventEmitter {
                 }
             };
 
+            if (params.headers) {
+                gmailSendParams.media.headers = [{
+                    name: 'List-Unsubscribe',
+                    value: `<${params.unsubscribeUrl}>`
+                }, {
+                    name: 'List-Unsubscribe-Post',
+                    value: 'List-Unsubscribe=One-Click'
+                }]
+            }
+
             if (params.threadId) {
                 gmailSendParams.requestBody = { threadId: params.threadId };
             }
diff --git a/lib/unimail-office365.js b/lib/unimail-office365.js
index 98e72e7..7238375 100644
--- a/lib/unimail-office365.js
+++ b/lib/unimail-office365.js
@@ -485,6 +485,7 @@ class Office365Connector extends EventEmitter {
      * @param {MessageRecipient[]} params.cc
      * @param {MessageRecipient[]} params.bcc
      * @param {{ name: String, url: String, contentBytes: any }[]} params.attachments
+     * @param {{ name: String, value: String }[]} params.headers - Optional headers to include
      *
      * @param {Object} options
      *
@@ -565,6 +566,10 @@ class Office365Connector extends EventEmitter {
                 }
             };
 
+            if (params.headers) {
+                message.internetMessageHeaders = params.headers;
+            }
+
             let version = 'v1.0';
             const attachments = results.convertAttachments;