Thank you for your submission, Andrea. This seems like an item for Support. Please submit a ticket to the support team for fastest path to resolution.

Thank you!

When uploading an image that's too big, it tries for a moment and stops. No error is presented. You think the image may have uploaded but it hasn't. However, trying to upload the same image using the Image Library, it immediately gives an error "Image exceeded maximum size of 6,000,000 pixels." If the image is too large, admin users need to be told this when using the New Experience email editor. thx.