Maciej Ceglowski decided to use Mail.app to archive the early letters of Alexander Pushkin , in part inspired by the Samuel Pepys Blog and in part because email clients offer built-in search and sort features.

It went quite well, but didn’t completely satisfy:

I had to bump the date up by 200 years because Mail.app refuses to properly sort nineteenth century email. I consider this a bug.

He plans to set up an IMAP server to store this kind of information as emails. And he is looking for good sources of material.