diff --git a/addons/auth_signup/data/mail_template_data.xml b/addons/auth_signup/data/mail_template_data.xml
index 717ec810875..19b35598938 100644
--- a/addons/auth_signup/data/mail_template_data.xml
+++ b/addons/auth_signup/data/mail_template_data.xml
@@ -22,7 +22,7 @@
                     <span style="font-size: 20px; font-weight: bold;">
                         <t t-out="object.name or ''">Marc Demo</t>
                     </span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not object.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ object.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="object.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
@@ -118,7 +118,7 @@
                     <span style="font-size: 20px; font-weight: bold;">
                         <t t-out="object.name or ''">Marc Demo</t>
                     </span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not object.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ object.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="object.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
@@ -266,7 +266,7 @@
                     <span style="font-size: 20px; font-weight: bold;">
                         <t t-out="object.name or ''">Marc Demo</t>
                     </span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not object.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ object.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="object.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/event/data/mail_template_data.xml b/addons/event/data/mail_template_data.xml
index 392b637d14d..e34855e198b 100644
--- a/addons/event/data/mail_template_data.xml
+++ b/addons/event/data/mail_template_data.xml
@@ -59,7 +59,7 @@
                             View Event
                         </a>
                     </t>
-                    <t t-else="">
+                    <t t-elif="not object.company_id.uses_default_logo">
                         <img t-att-src="'/logo.png?company=%s' % object.company_id.id" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="'%s' % object.company_id.name"/>
                     </t>
                 </td></tr>
@@ -290,7 +290,7 @@
                             View Event
                         </a>
                     </t>
-                    <t t-else="">
+                    <t t-elif="not object.company_id.uses_default_logo">
                         <img t-att-src="'/logo.png?company=%s' % object.company_id.id" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="'%s' % object.company_id.name"/>
                     </t>
                 </td></tr>
diff --git a/addons/gamification/data/mail_template_data.xml b/addons/gamification/data/mail_template_data.xml
index 74bb0d35696..30c02a05821 100644
--- a/addons/gamification/data/mail_template_data.xml
+++ b/addons/gamification/data/mail_template_data.xml
@@ -18,7 +18,7 @@
                 <tr><td valign="middle">
                     <span style="font-size: 10px;">Your Badge</span><br/>
                     <span style="font-size: 20px; font-weight: bold;" t-out="object.badge_id.name or ''"></span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not object.user_id.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ object.user_id.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="object.user_id.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/hr_expense/data/mail_templates.xml b/addons/hr_expense/data/mail_templates.xml
index bf39d13774f..52e221919bf 100644
--- a/addons/hr_expense/data/mail_templates.xml
+++ b/addons/hr_expense/data/mail_templates.xml
@@ -34,10 +34,10 @@
 
         <template id="hr_expense_template_register_no_user">
             <div style="background:#F0F0F0;color:#515166;padding:10px 0px;font-family:Arial,Helvetica,sans-serif;font-size:14px;">
-                <table style="width:600px;margin:5px auto;">
+                <table style="width:600px;margin:5px auto;" t-if="not expense.employee_id.company_id.uses_default_logo">
                     <tbody>
                         <tr>
-                            <td><a href="/"><img src="/web/binary/company_logo" style="vertical-align:baseline;max-width:100px;" /></a></td>
+                            <td><a href="/"><img t-attf-src="/logo.png?company={{ expense.employee_id.company_id.id }}" style="vertical-align:baseline;max-width:100px;max-height:50px;" /></a></td>
                         </tr>
                     </tbody>
                 </table>
diff --git a/addons/im_livechat/data/mail_templates.xml b/addons/im_livechat/data/mail_templates.xml
index 29d1c5e2032..2625d4b63eb 100644
--- a/addons/im_livechat/data/mail_templates.xml
+++ b/addons/im_livechat/data/mail_templates.xml
@@ -14,7 +14,7 @@
                     <span style="font-size: 20px; font-weight: bold;">
                         <t t-esc="company.name"/>
                     </span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not company.uses_default_logo">
                     <img t-att-src="'/logo.png?company=%s' % company.id" style="padding: 0px; margin: 0px; height: 48px;" t-att-alt="'%s' % company.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/lunch/data/mail_template_data.xml b/addons/lunch/data/mail_template_data.xml
index 4bc41d53c9d..a0b9e049d54 100644
--- a/addons/lunch/data/mail_template_data.xml
+++ b/addons/lunch/data/mail_template_data.xml
@@ -19,7 +19,7 @@
             <table border="0" cellpadding="0" cellspacing="0" width="590" style="min-width: 590px; background-color: white; padding: 0px 8px 0px 8px; border-collapse:separate;">
                 <tr><td valign="middle">
                     <span style="font-size: 10px;">Lunch Order</span><br/>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not user.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ user.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="user.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/mail/data/mail_templates_email_layouts.xml b/addons/mail/data/mail_templates_email_layouts.xml
index ff56fe0ffd5..7bd2e7cf154 100644
--- a/addons/mail/data/mail_templates_email_layouts.xml
+++ b/addons/mail/data/mail_templates_email_layouts.xml
@@ -23,8 +23,8 @@
     <table role="presentation" cellspacing="0" cellpadding="0" border="0" style="width: 100%; margin-top: 5px;">
         <tbody>
             <tr>
-                <td valign="center">
-                    <img t-att-src="'/logo.png?company=%s' % (company.id or 0)" style="padding: 0px; margin: 0px; height: auto; max-width: 200px; max-height: 36px;" t-att-alt="'%s' % company.name"/>
+                <td valign="center" t-if="company and not company.uses_default_logo">
+                    <img t-att-src="'/logo.png?company=%s' % company.id" style="padding: 0px; margin: 0px; height: auto; max-width: 200px; max-height: 36px;" t-att-alt="'%s' % company.name"/>
                 </td>
             </tr>
             <tr>
@@ -138,8 +138,8 @@
                             <t t-out="message.record_name and message.record_name.replace('/','-') or ''"/>
                         </span>
                     </t>
-                </td><td valign="middle" align="right">
-                    <img t-att-src="'/logo.png?company=%s' % (company.id or 0)" style="padding: 0px; margin: 0px; height: 48px;" t-att-alt="'%s' % company.name"/>
+                </td><td valign="middle" align="right" t-if="company and not company.uses_default_logo">
+                    <img t-att-src="'/logo.png?company=%s' % company.id" style="padding: 0px; margin: 0px; height: 48px;" t-att-alt="'%s' % company.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
                   <hr width="100%" style="background-color:rgb(204,204,204);border:medium none;clear:both;display:block;font-size:0px;min-height:1px;line-height:0; margin:4px 0px 32px 0px;"/>
diff --git a/addons/portal/data/mail_template_data.xml b/addons/portal/data/mail_template_data.xml
index 4e24d93c859..2205279648c 100644
--- a/addons/portal/data/mail_template_data.xml
+++ b/addons/portal/data/mail_template_data.xml
@@ -19,7 +19,7 @@
                 <tr><td valign="middle">
                     <span style="font-size: 10px;">Your Account</span><br/>
                     <span style="font-size: 20px; font-weight: bold;" t-out="object.user_id.name or ''">Marc Demo</span>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not object.user_id.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ object.user_id.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="object.user_id.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/survey/data/mail_template_data.xml b/addons/survey/data/mail_template_data.xml
index 559ce33b261..a0b3ff7fdac 100644
--- a/addons/survey/data/mail_template_data.xml
+++ b/addons/survey/data/mail_template_data.xml
@@ -58,7 +58,9 @@
         <tbody>
             <tr><td>
                 <!-- We use the logo of the company that created the survey (to handle multi company cases) -->
-                <a href="/"><img t-attf-src="/logo.png?company={{ object.survey_id.create_uid.company_id.id }}" style="vertical-align:baseline;max-width:100px;" /></a>
+                <a href="/"><img t-if="not object.survey_id.create_uid.company_id.uses_default_logo"
+                                 t-attf-src="/logo.png?company={{ object.survey_id.create_uid.company_id.id }}"
+                                 style="vertical-align:baseline;max-width:100px;" /></a>
             </td><td style="text-align:right;vertical-align:middle;">
                     Certification: <t t-out="object.survey_id.display_name or ''">Feedback Form</t>
             </td></tr>
diff --git a/addons/website/models/website.py b/addons/website/models/website.py
index b214ba3e816..c298f0835b7 100644
--- a/addons/website/models/website.py
+++ b/addons/website/models/website.py
@@ -357,7 +357,7 @@ class Website(models.Model):
             'module_state': feature.module_id.state,
         } for feature in configurator_features]
         r['logo'] = False
-        if company.logo and company.logo != company._get_logo():
+        if not company.uses_default_logo:
             r['logo'] = company.logo.decode('utf-8')
         try:
             result = self._website_api_rpc('/api/website/1/configurator/industries', {'lang': self.env.context.get('lang')})
@@ -543,7 +543,7 @@ class Website(models.Model):
                 'res_field': 'logo',
                 'res_id': website.id,
             })
-        elif not logo_attachment_id and company.logo and company.logo != company._get_logo():
+        elif not logo_attachment_id and not company.uses_default_logo:
             website.logo = company.logo.decode('utf-8')
 
         # palette
diff --git a/addons/website_crm_partner_assign/data/mail_template_data.xml b/addons/website_crm_partner_assign/data/mail_template_data.xml
index 792c847722a..14da8105145 100644
--- a/addons/website_crm_partner_assign/data/mail_template_data.xml
+++ b/addons/website_crm_partner_assign/data/mail_template_data.xml
@@ -19,7 +19,7 @@
             <table border="0" cellpadding="0" cellspacing="0" width="590" style="min-width: 590px; background-color: white; padding: 0px 8px 0px 8px; border-collapse:separate;">
                 <tr><td valign="middle">
                     <span style="font-size: 10px;">Your leads</span><br/>
-                </td><td valign="middle" align="right">
+                </td><td valign="middle" align="right" t-if="not user.company_id.uses_default_logo">
                     <img t-attf-src="/logo.png?company={{ user.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="user.company_id.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
diff --git a/addons/website_profile/data/mail_template_data.xml b/addons/website_profile/data/mail_template_data.xml
index 9a1dbcbf9ab..c6ec608bf92 100644
--- a/addons/website_profile/data/mail_template_data.xml
+++ b/addons/website_profile/data/mail_template_data.xml
@@ -24,7 +24,7 @@
                             <t t-out="object.company_id.name or ''">YourCompany</t> Profile validation
                         </span>
                     </td>
-                    <td valign="middle" align="right">
+                    <td t-if="not user.company_id.uses_default_logo" valign="middle" align="right">
                         <img t-attf-src="/logo.png?company={{ user.company_id.id }}" style="padding: 0px; margin: 0px; height: auto; width: 80px;" t-att-alt="user.company_id.name"/>
                     </td>
                 </tr>
diff --git a/addons/website_slides/data/mail_templates.xml b/addons/website_slides/data/mail_templates.xml
index 4d7c2413c72..d0e681fbe25 100644
--- a/addons/website_slides/data/mail_templates.xml
+++ b/addons/website_slides/data/mail_templates.xml
@@ -15,8 +15,8 @@
                     <span style="font-size: 20px; font-weight: bold;">
                         <t t-esc="message.record_name and message.record_name.replace('/','-') or ''"/>
                     </span>
-                </td><td valign="middle" align="right">
-                    <img t-att-src="'/logo.png?company=%s' % (company.id or 0)" style="padding: 0px; margin: 0px; height: 48px;" t-att-alt="'%s' % company.name"/>
+                </td><td valign="middle" align="right" t-if="company and not company.uses_default_logo">
+                    <img t-att-src="'/logo.png?company=%s' % company.id" style="padding: 0px; margin: 0px; height: 48px;" t-att-alt="'%s' % company.name"/>
                 </td></tr>
                 <tr><td colspan="2" style="text-align:center;">
                   <hr width="100%" style="background-color:rgb(204,204,204);border:medium none;clear:both;display:block;font-size:0px;min-height:1px;line-height:0; margin:4px 0px 32px 0px;"/>
diff --git a/odoo/addons/base/models/res_company.py b/odoo/addons/base/models/res_company.py
index 8fb9c6dc4ca..49287499c20 100644
--- a/odoo/addons/base/models/res_company.py
+++ b/odoo/addons/base/models/res_company.py
@@ -10,6 +10,7 @@ import warnings
 from odoo import api, fields, models, tools, _, Command
 from odoo.exceptions import ValidationError, UserError
 from odoo.modules.module import get_resource_path
+from odoo.tools import file_open
 from random import randrange
 from PIL import Image
 
@@ -25,7 +26,8 @@ class Company(models.Model):
         raise UserError(_('Duplicating a company is not allowed. Please create a new company instead.'))
 
     def _get_logo(self):
-        return base64.b64encode(open(os.path.join(tools.config['root_path'], 'addons', 'base', 'static', 'img', 'res_company_logo.png'), 'rb') .read())
+        with file_open('base/static/img/res_company_logo.png', 'rb') as file:
+            return base64.b64encode(file.read())
 
     def _default_currency_id(self):
         return self.env.user.company_id.currency_id
@@ -43,6 +45,7 @@ class Company(models.Model):
     # logo_web: do not store in attachments, since the image is retrieved in SQL for
     # performance reasons (see addons/web/controllers/main.py, Binary.company_logo)
     logo_web = fields.Binary(compute='_compute_logo_web', store=True, attachment=False)
+    uses_default_logo = fields.Boolean(compute='_compute_uses_default_logo', store=True)
     currency_id = fields.Many2one('res.currency', string='Currency', required=True, default=lambda self: self._default_currency_id())
     user_ids = fields.Many2many('res.users', 'res_company_users_rel', 'cid', 'user_id', string='Accepted Users')
     street = fields.Char(compute='_compute_address', inverse='_inverse_street')
@@ -131,6 +134,12 @@ class Company(models.Model):
             img = company.partner_id.image_1920
             company.logo_web = img and base64.b64encode(tools.image_process(base64.b64decode(img), size=(180, 0)))
 
+    @api.depends('partner_id.image_1920')
+    def _compute_uses_default_logo(self):
+        default_logo = self._get_logo()
+        for company in self:
+            company.uses_default_logo = not company.logo or company.logo == default_logo
+
     @api.onchange('state_id')
     def _onchange_state(self):
         if self.state_id.country_id:
diff --git a/odoo/addons/base/tests/test_res_company.py b/odoo/addons/base/tests/test_res_company.py
index caf6d785c89..815daecb9c7 100644
--- a/odoo/addons/base/tests/test_res_company.py
+++ b/odoo/addons/base/tests/test_res_company.py
@@ -38,3 +38,15 @@ class TestCompany(TransactionCase):
             'company_ids': main_company.ids,
         })
         user.action_unarchive()
+
+    def test_logo_check(self):
+        """Ensure uses_default_logo is properly (re-)computed."""
+        company = self.env['res.company'].create({'name': 'foo'})
+
+        self.assertTrue(company.logo, 'Should have a default logo')
+        self.assertTrue(company.uses_default_logo)
+        company.partner_id.image_1920 = False
+        # No logo means we fall back to another default logo for the website route -> uses_default
+        self.assertTrue(company.uses_default_logo)
+        company.partner_id.image_1920 = "R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"
+        self.assertFalse(company.uses_default_logo)