diff --git a/mail_digest/__manifest__.py b/mail_digest/__manifest__.py
index 07682265..0c0fcb8c 100644
--- a/mail_digest/__manifest__.py
+++ b/mail_digest/__manifest__.py
@@ -4,7 +4,7 @@
 {
     'name': 'Mail digest',
     'summary': """Basic digest mail handling.""",
-    'version': '11.0.1.0.1',
+    'version': '11.0.1.0.2',
     'license': 'AGPL-3',
     'author': 'Camptocamp, Odoo Community Association (OCA)',
     'website': 'https://github.com/OCA/social',
diff --git a/mail_digest/models/res_partner.py b/mail_digest/models/res_partner.py
index 7fa6bd9f..aa6e3fe5 100644
--- a/mail_digest/models/res_partner.py
+++ b/mail_digest/models/res_partner.py
@@ -77,17 +77,37 @@ class ResPartner(models.Model):
         ids = self.ids
         if self.env.context.get('notify_only_recipients'):
             ids = [x for x in ids if x in message.partner_ids.ids]
-        domain = [
+        common_domain = [
             '|',
             ('id', 'in', ids),
             ('channel_ids', 'in', channels.ids),
             ('email', '!=', email),
+        ]
+        # A bit hacky but we need to exclude / include partners
+        # that do not have any user and as such, they have no email settings.
+        # NOTE: using the following domain does not work,
+        # so we do 2 searches in the middle and return a domain
+        # containing only the desired ids.
+        #
+        #    '|', ('user_ids', '=', False),
+        #    '&', ('user_ids.digest_mode', '=', False),
+        #         ('user_ids.notification_type', '=', 'email')
+        without_users_ids = []
+        if not digest:
+            # get partners w/ no users
+            without_users_ids = self.search(
+                common_domain + [('user_ids', '=', False)]
+            ).ids
+        digest_domain = [
             ('user_ids.digest_mode', '=', digest),
             ('user_ids.notification_type', '=', 'email'),
         ]
         if message.subtype_id:
-            domain.extend(self._get_domain_subtype_leaf(message.subtype_id))
-        return domain
+            digest_domain.extend(
+                self._get_domain_subtype_leaf(message.subtype_id))
+        # get partners w/ users
+        with_users_ids = self.search(common_domain + digest_domain).ids
+        return [('id', 'in', without_users_ids + with_users_ids)]
 
     @api.model
     def _get_domain_subtype_leaf(self, subtype):
diff --git a/mail_digest/tests/test_partner_domains.py b/mail_digest/tests/test_partner_domains.py
index bdbe9c0e..05e25d12 100644
--- a/mail_digest/tests/test_partner_domains.py
+++ b/mail_digest/tests/test_partner_domains.py
@@ -34,6 +34,13 @@ class PartnerDomainCase(SavepointCase):
         cls.partner1 = cls.user1.partner_id
         cls.partner2 = cls.user2.partner_id
         cls.partner3 = cls.user3.partner_id
+        # a partner w/ no user that should not be excluded
+        # in non-digest notifications
+        cls.partner_nouser = cls.partner_model.with_context(
+            tracking_disable=True).create({
+                'name': 'No User Partner',
+                'email': 'nouser@test.com',
+            })
 
         cls.subtype1 = cls.subtype_model.create({'name': 'Type 1'})
         cls.subtype2 = cls.subtype_model.create({'name': 'Type 2'})
@@ -60,7 +67,7 @@ class PartnerDomainCase(SavepointCase):
         # because we call `_get_notify_by_email_domain` directly
         self.partner1.real_user_id.notification_type = 'email'
         self.partner2.real_user_id.notification_type = 'email'
-        partners = self.partner1 + self.partner2
+        partners = self.partner1 + self.partner2 + self.partner_nouser
         # followers
         self.partner3.message_subscribe(self.partner2.ids)
         # partner1 is the only recipient
@@ -68,16 +75,20 @@ class PartnerDomainCase(SavepointCase):
             'body': 'My Body',
             'res_id': self.partner3.id,
             'model': 'res.partner',
-            'partner_ids': [(4, self.partner1.id)]
+            'partner_ids': [(4, self.partner1.id), (4, self.partner_nouser.id)]
         })
         domain = partners._get_notify_by_email_domain(message)
         # we find both of them since partner2 is a follower
         self._assert_found(self.partner1, domain)
         self._assert_found(self.partner2, domain)
+        # and we find also the partner w/ no user
+        self._assert_found(self.partner_nouser, domain)
+
         # no one here in digest mode
         domain = partners._get_notify_by_email_domain(message, digest=True)
         self._assert_found(self.partner1, domain, not_found=True)
         self._assert_found(self.partner2, domain, not_found=True)
+        self._assert_found(self.partner_nouser, domain, not_found=True)
 
         # include only recipients
         domain = partners.with_context(