The reply lands, and then it sits for a day because everyone assumed someone else would take it. By the time it is answered the moment has gone.
Speed matters more than polish. A short, specific answer within the hour beats a considered one tomorrow. Then one question to check the fit, then two named times rather than a link.
Not every reply is a lead. The ones that are get handled properly precisely because the ones that are not were let go quickly.
How we do it
Every reply is answered within a day, any day and any hour, by a person who read it. That person is the same one who wrote the copy and runs the sending.