When you send an email that contains images or other media hosted on a CDN, the process generally works as follows:
1. Initial Request: When the recipient opens the email, their email client requests the media files from the CDN. 2. Geographical Proximity: The CDN then routes this request to the server closest to the recipient’s location, ensuring faster load times. 3. Caching: The CDN caches the content at various points globally, reducing the load on your origin server and speeding up subsequent requests.