I auto-archive all sales mailing like that to separate folders. You never know when you will need to search for patterns in their communication. Do the same wit

I auto-archive all sales mailing like that to separate folders. You never know when you will need to search for patterns in their communication. Do the same with your competition as well, but read it more actively. Thanks to this unhealthy hoarding habit, I can produce product samples and quotes to buyers for stuff I don't even have. I have seen some sites also publish their user growth in newsletters as well; it allows me to study their growth patterns. Ditto with sales mail that's CC'ed to me. Instant mailing list of potential buyers, for free.