diff --git a/addons/mail/models/mail_message.py b/addons/mail/models/mail_message.py
index 146ef168ed9..3fbbc500d36 100644
--- a/addons/mail/models/mail_message.py
+++ b/addons/mail/models/mail_message.py
@@ -12,7 +12,7 @@ from odoo.exceptions import UserError, AccessError
 from odoo.osv import expression
 
 _logger = logging.getLogger(__name__)
-_image_dataurl = re.compile(r'(data:image/[a-z]+?);base64,([a-z0-9+/\n]{3,}=*)\n*([\'"])', re.I)
+_image_dataurl = re.compile(r'(data:image/[a-z]+?);base64,([a-z0-9+/\n]{3,}=*)\n*([\'"])(?: data-filename="([^"]*)")?', re.I)
 
 
 class Message(models.Model):
@@ -762,7 +762,7 @@ class Message(models.Model):
             def base64_to_boundary(match):
                 key = match.group(2)
                 if not data_to_url.get(key):
-                    name = 'image%s' % len(data_to_url)
+                    name = match.group(4) if match.group(4) else 'image%s' % len(data_to_url)
                     attachment = Attachments.create({
                         'name': name,
                         'datas': match.group(2),