osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now
In general people contacting our support desk are very polite and if our response fixes the problem, they reply with a "Thank you" email.
Normally I close / resolve tickets when I reply with a solution which normally works, but this means the ones who send a thank you open the tickets again, making the stats for re-opened tickets high.
What I would like to do is answer the tickets leaving them open and then have them automatically close after a couple of days if there is not a reply.