This is known as "Email Deals", which is essentially an email with a single product that they are selling which you then go and research. While there is no tool that can help you analyze these products there is a method called speed analysis that can help you sift through products determining which ones are worth your time and one are not. The process is essentially three steps...
1) Red Flags
Is Amazon on The Buy Box? (if yes, then skip)
2) Sales Estimates
How Many Total Reviews? (0 or less than 10 total reviews & your supplier has a high MOQ, then skip)
3) Profitability
Is the product cost 1/2 or less than the current buy box? (if not, then skip)
If a product passes the Speed Analysis then make a note and come back later for a detailed analysis.
How do I analyze products froma a suppler that only send their prodcuts in emails?
Should I work with a supplier that only sends products in emails?