Main mailing list
There's a mailing list for users and developers of ftputil alike. The list is mainly concerned with announcements and questions (and hopefully answers) regarding the usage of the library.
Before posting to the mailing list, you have to subscribe. There's much spam sent to the list address, so I had to add the restriction.
If you want to read the main list on the web, go to the archives. There's a second archive at Gmane, together with a search function (the "Search Archive" text field on the left hand side of the page).
Ticket mailing list
Also there's a read-only list for ticket entries and the referring comments.
If you want to read the ticket list on the web, go to the archives.