Hey thanks! Got this feedback from a couple of other folks as well. The overall digest format has been improved significantly today and you should see better digests tomorrow onwards. Thanks again!
1. not sure what you meant by "dynamic". First time API call is slow as it digs up your entire mailbox for the search query. It then stores the timestamp of this moment in time and next subsequent API calls are made for with a `after:` filter. Hence they are super fast.
2. code is open source and step by step instructions to set this up for yourself are mentioned in Github Readme.
IMO, "price is at lowest" doesn't make sense at all. If I'm are interested in buying something, waiting for a while to save a few bucks would give me more pleasure than knowing what the lowest price of this product ever was.
I read a Quora post by a Flipkart employee who said that the seller chosen on the home page is often the most trusted seller. I doubt if people would buy from sellers with lower ratings. Nonetheless, a feature to consider all sellers before notifying prices would be nice.