Digesto has improved! Here is the new set of features recently added.
Edit Image Attributes
In addition to inline CSS, images from your blog can now be controlled by specifying standard attributes to apply to images embedded in the body section of your Digesto Email.
If you leave it empty, image attributes will keep the values from the original post. When declared in Digesto, the new values will replace/overwrite the image attributes used on your original post.
Other Improvements and Fixes
Fixed issue when establishing a secure HTTPS connection with feeds