Problem Displaying Image

I have done an email sending test where i have sent an example email to the admin address. The email takes almost 1 hour to get delivered and upon opening it the images are not displayed even after prompting Display image on gmail.



What could be the problem?

I have done an email sending test where i have sent an example email to the admin address. The email takes almost 1 hour to get delivered and upon opening it the images are not displayed even after prompting Display image on gmail.

What could be the problem?