From 6b2a18be8a4bfaf723aeb1088fc70e843e980c37 Mon Sep 17 00:00:00 2001
From: Antoine Guenet <age@odoo.com>
Date: Fri, 21 Apr 2023 08:25:31 +0000
Subject: [PATCH] [FIX] mass_mailing: ensure mails don't get distorted with DPI
 scaling

This ensure the layouts of emails don't get distorted in Outlook when
the user is using DPI scaling (typically, some elements get scaled up
while others don't).

X-original-commit: 2348efb6e22544d82ce53d542975f334d5553f62
Part-of: odoo/odoo#124465
---
 addons/mass_mailing/data/mailing_data_templates.xml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/addons/mass_mailing/data/mailing_data_templates.xml b/addons/mass_mailing/data/mailing_data_templates.xml
index 79a2b852c51..e3c9b53da3f 100644
--- a/addons/mass_mailing/data/mailing_data_templates.xml
+++ b/addons/mass_mailing/data/mailing_data_templates.xml
@@ -15,6 +15,19 @@
                 <meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7; IE=EDGE" />
 
                 <t t-call="mass_mailing.mass_mailing_mail_style"/>
+
+                <!--
+                    Prevent Outlook from distorting images with DPI scaling (see
+                    https://www.htmlemailcheck.com/knowledge-base/dpi-scaling-in-outlook-2007-2013/):
+                -->
+                <!--[if mso]>
+                    <xml>
+                        <o:OfficeDocumentSettings>
+                            <o:AllowPNG/>
+                            <o:PixelsPerInch>96</o:PixelsPerInch>
+                        </o:OfficeDocumentSettings>
+                    </xml>
+                <![endif]-->
             </head>
             <body>
                 <t t-out="body"/>