If you haven't read this yet, read it now.
This reminds of a mailing list I really want to set up.
Also involves a tutorial on setting up notmuch. I think this might be the best way to go. Interesting.
This is a really really wonderful description of how OfflineIMAP works.
Job applicants can easily collect a bunch of information that is otherwise difficult or illegal to get. Upload a text file or spreadsheet of your customers' emails and instantly get age, gender, and more.
I sometimes forget other people don't keep email around. With the exception of opening oneself to overreaching subpoenas, deleting your email seems like a bad idea.
Unscientific survey that still has some important implications for user freedom in an era of network services. The free world is losing ground quickly and has a lot of work to do if it's going to make it up.