Hi,

Since you are running Odoo Community on localhost, the images in your Email Marketing campaigns do not appear because email clients cannot load pictures from local URLs like http://localhost:8069. These links only work inside your own computer, so when Gmail or Outlook tries to access them from the internet, the images fail to load. The only reliable way to fix this is to run Odoo on a publicly accessible server with a real domain name, or temporarily expose your local instance using a tunneling tool like ngrok. A public server is the best long-term solution because it allows email images, customer portals, and all external features to work correctly, giving you a realistic test of how Odoo will behave in production.