This is an addition and patch to ezmlm-0.53 [(c) Dan J. Bernstein]. Ezmlm-idx uses Dan's libraries and heavily relies on ezmlm-0.53 code. ezmlm-idx does not function without ezmlm-0.53. ezmlm-0.53 provides basic message distribution, subscriber address handling, message archiving (single quoted message retrieval only), and bounce handling. ezmlm-idx adds multi-message threaded archive retrieval, digests, remote administration, message and subscription moderation, subscriber-only restrictions, message trailer, subject prefix, subscriber name storage, customizable setup, multi-language and MIME support and more. In addition, improved bounce handling, case-insensitive subscriber address storage, and support for distributed lists (main + sublist transparent to the subscriber). Ezmlm-idx can now be compiled with MySQL or Postgres support.