There's not currently an official integration. If you're wondering about how to "mozify" Marketo emails using Email on Acid, so that colored tables which look similar to the images will replace images if images are not downloaded in certain email clients:
I ran some testing with this a few weeks ago when a support case came up about it, and found that because the rich text editor we uses inserts images inside of <p> tags, it's necessary to manually edit the HTML and remove it from the <p> tags before you have it Mozified by Email on Acid - it won't mozify an image if it's inside of <p> tags.
What I did was editied a draft of an email, clicked Email Actions > HTML Tools > Replace HTML, and copied the email's entire HTML code into a text editor. Then I removed the <p> and </p> tags from around the <img> elements. Then I copied the edited HTML into Email on Acid's mozify app and had it mozified. Then I went back into the Marketo email using the same Email Actions > HTML Tools > Replace HTML, and pasted in the finished code from Email on Acid.