diff --git a/addons/mail_plugin/controllers/authenticate.py b/addons/mail_plugin/controllers/authenticate.py
index 1b0f9d1103b..8ef89d8b4e5 100644
--- a/addons/mail_plugin/controllers/authenticate.py
+++ b/addons/mail_plugin/controllers/authenticate.py
@@ -55,7 +55,7 @@ class Authenticate(http.Controller):
     # In this case, an exception will be thrown in case of preflight request if only POST is allowed.
     @http.route(['/mail_client_extension/auth/access_token', '/mail_plugin/auth/access_token'], type='json', auth="none", cors="*",
                 methods=['POST', 'OPTIONS'])
-    def auth_access_token(self, auth_code, **kw):
+    def auth_access_token(self, auth_code='', **kw):
         """
         Called by the external app to exchange an auth code, which is temporary and was passed in a URL, for an
         access token, which is permanent, and can be used in the `Authorization` header to authorize subsequent requests
@@ -63,6 +63,8 @@ class Authenticate(http.Controller):
         old route name "/mail_client_extension/auth/access_token is deprecated as of saas-14.3,it is not needed for newer
         versions of the mail plugin but necessary for supporting older versions
         """
+        if not auth_code:
+            return {"error": "Invalid code"}
         auth_message = self._get_auth_code_data(auth_code)
         if not auth_message:
             return {"error": "Invalid code"}
diff --git a/addons/mail_plugin/controllers/mail_plugin.py b/addons/mail_plugin/controllers/mail_plugin.py
index 666105ec958..19f50679392 100644
--- a/addons/mail_plugin/controllers/mail_plugin.py
+++ b/addons/mail_plugin/controllers/mail_plugin.py
@@ -144,7 +144,7 @@ class MailPluginController(http.Controller):
             return {'error': _('You need to specify at least the partner_id or the name and the email')}
 
         if partner_id:
-            partner = request.env['res.partner'].browse(partner_id)
+            partner = request.env['res.partner'].browse(partner_id).exists()
             return self._get_contact_data(partner)
 
         normalized_email = tools.email_normalize(email)
@@ -184,11 +184,10 @@ class MailPluginController(http.Controller):
         search on.
         The method returns an array containing the dicts of the matched contacts.
         """
-
         normalized_email = tools.email_normalize(search_term)
 
         if normalized_email:
-            filter_domain = [('email_normalized', '=', search_term)]
+            filter_domain = [('email_normalized', 'ilike', search_term)]
         else:
             filter_domain = ['|', '|', ('display_name', 'ilike', search_term), ('ref', '=', search_term),
                              ('email', 'ilike', search_term)]
diff --git a/addons/mail_plugin/i18n/mail_plugin.pot b/addons/mail_plugin/i18n/mail_plugin.pot
index 24573b90cf3..364220c1136 100644
--- a/addons/mail_plugin/i18n/mail_plugin.pot
+++ b/addons/mail_plugin/i18n/mail_plugin.pot
@@ -645,6 +645,13 @@ msgstr ""
 msgid "Save in Odoo"
 msgstr ""
 
+#. module: mail_plugin
+#. openerp-web
+#: code:addons/mail_plugin/static/src/to_translate/translations_outlook.xml:0
+#, python-format
+msgid "Save the contact to create the company"
+msgstr ""
+
 #. module: mail_plugin
 #. openerp-web
 #: code:addons/mail_plugin/static/src/to_translate/translations_gmail.xml:0
diff --git a/addons/mail_plugin/static/src/to_translate/translations_outlook.xml b/addons/mail_plugin/static/src/to_translate/translations_outlook.xml
index e26d7c68397..9d0ec2776d6 100644
--- a/addons/mail_plugin/static/src/to_translate/translations_outlook.xml
+++ b/addons/mail_plugin/static/src/to_translate/translations_outlook.xml
@@ -48,4 +48,5 @@
     <string>From : %(email)s</string>
     <string>Logged from</string>
     <string>Outlook Inbox</string>
+    <string>Save the contact to create the company</string>
 </resources>