Is there any way to avoid image blocking on outlook?

Is there any way to avoid image blocking on outlook?

Hi,

Normally when I send emails with images using outlook there is no problem for the person receiving to see the images. However, when I send the picture via zoho campaigns the images are automatically blocked and need to be downloaded.

Is there any way to avoid this?

Hope to find a way to send massive emails where the images aren't blocked...

Thank you!

Tania