No chat widget, no Discord, no ticket portal. Not because those are bad — because every channel you open is a promise to answer it, and I would rather keep one promise than break four.
One address, a stated reply time, and an FAQ that pre-empts the questions I actually get. Billing questions go to whichever product took the money, because that is where the refund button lives and where someone can actually issue one.
The comment threads on the half-formed ideas are the one exception, and they are deliberately not support. They are for arguing with me about what to build next, which is a different job with a different urgency.