Since Flickr they doen't seem to want to enable receiving comments on your photos by e-mail, I had to find a way:
1) Get your Comments RSS or Atom Feed Adress at the Recent Activity Page; it's something big like http://flickr.com/recent_comments_feed.gne?id=43163360@N00&format=atom_03 (this is the feed for the comments on my pictures).
2) Create an account at FeedBlitz;
3) Go to New Feed;
4) In 'Feed or Blog URL', enter your feed address, leave the other fields blank;
5) You're done! You are automatically added as a subscriber to this feed and you will receive comments on your pictures once per day.
Hope this helps! :)
Technorati Tags: flickr, atom, feedblitz