diff --git a/docsource/modules180-190.rst b/docsource/modules180-190.rst
index c9d7def03842..a40eee88f7ce 100644
--- a/docsource/modules180-190.rst
+++ b/docsource/modules180-190.rst
@@ -708,7 +708,7 @@ Module coverage 18.0 -> 19.0
 +---------------------------------------------------+----------------------+-------------------------------------------------+
 | mail_bot_hr                                       |Nothing to do         |                                                 |
 +---------------------------------------------------+----------------------+-------------------------------------------------+
-| mail_group                                        |                      |                                                 |
+| mail_group                                        |Done                  |                                                 |
 +---------------------------------------------------+----------------------+-------------------------------------------------+
 | mail_plugin                                       |Nothing to do         |No DB layout changes.                            |
 +---------------------------------------------------+----------------------+-------------------------------------------------+
diff --git a/openupgrade_scripts/scripts/mail_group/19.0.1.1/post-migration.py b/openupgrade_scripts/scripts/mail_group/19.0.1.1/post-migration.py
new file mode 100644
index 000000000000..3c05c26431ee
--- /dev/null
+++ b/openupgrade_scripts/scripts/mail_group/19.0.1.1/post-migration.py
@@ -0,0 +1,9 @@
+# Copyright 2026 ForgeFlow S.L. (https://www.forgeflow.com)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    openupgrade.load_data(env, "mail_group", "19.0.1.1/noupdate_changes.xml")
diff --git a/openupgrade_scripts/scripts/mail_group/19.0.1.1/upgrade_analysis_work.txt b/openupgrade_scripts/scripts/mail_group/19.0.1.1/upgrade_analysis_work.txt
new file mode 100644
index 000000000000..426aec8b8e4e
--- /dev/null
+++ b/openupgrade_scripts/scripts/mail_group/19.0.1.1/upgrade_analysis_work.txt
@@ -0,0 +1,10 @@
+---Models in module 'mail_group'---
+---Fields in module 'mail_group'---
+mail_group   / mail.group               / _order                        : _order is now 'is_closed ASC, create_date DESC, id DESC' ('create_date DESC, id DESC')
+mail_group   / mail.group               / is_closed (boolean)           : NEW
+# NOTHING TO DO: new feature
+
+---XML records in module 'mail_group'---
+NEW ir.actions.act_window: mail_group.mail_compose_message_action_mail_group
+NEW ir.ui.view: mail_group.email_template_mail_group_closed
+# NOTHING TO DO