Marketo can host all of the images that you want to use on your emails and landing pages. These instructions will show you how to upload images to your Marketo instance.
Right click on Images and Files (or the folder you wish to upload to) and select ‘Upload Image or File’.
Select the image from your machine that you want to upload to Marketo. Press the Browse button and select the image from your machine that you want to upload to Marketo. When you're done, press the Upload button.
Once the upload is complete, select the folder where you uploaded the image.
Tip: By clicking on View, you can toggle between thumbnail & list viewing.
Verify the image dimensions match those of the placeholder image you’re replacing. Copy your image URL from here.