[IMP] mass_mailing_custom_unsubscribe: chatter permissions

Otherwise only admins can put notes

mass_mailing_custom_unsubscribe/__manifest__.py

@@ -6,7 +6,7 @@
     "name": "Customizable unsubscription process on mass mailing emails",
     "summary": "Know and track (un)subscription reasons, GDPR compliant",
     "category": "Marketing",
-    "version": "13.0.1.0.1",
+    "version": "13.0.1.0.2",
     "depends": ["mass_mailing"],
     "data": [
         "security/ir.model.access.csv",

mass_mailing_custom_unsubscribe/models/mail_unsubscription.py

@@ -12,6 +12,7 @@ class MailUnsubscription(models.Model):
     _name = "mail.unsubscription"
     _description = "Mail unsubscription"
     _inherit = "mail.thread"
+    _mail_post_access = "read"
     _rec_name = "date"
     _order = "date DESC"