I'm not exactly sure when mailing for tickets stopped, as the FAQ still mentions the mailing method. Since the phone as a method was added shortly into Drew's tenure, I believe that's perhaps when mailing ended. But I don't use the phone much these days since you rarely get a real person on the other side of the line. When I visited a taping in 2015, I used OCA. Just wait for an email reply, print the tickets, bring them out while in line, and there you have it. Mailing for tickets in general ended around the turn of this century, though TPIR of course was still doing them as recently as the end of the Barker era. One thing though that I'd like to see is if you could just use your smartphone then have a code ready from an OCA app so that the pages can scan it rather than bringing a piece of paper.