iZip provides an easy way to manage .ZIP, .ZIPX, and .RAR archives on Mac systems. When you open an archive with iZip, it appears as a removable disk. This allows management of your files right inside the OS X Finder. All view modes (including cover-flow) just work. For extra security, iZip supports up to 256 bit AES zip encryption.
Why a milter archiver? If you are required to also log source and destination IPs and BCCs (additional rcpt to's not in a CC field communicated at the SMTP protocol level), then the only option is do this in the MTA, or in a milter application that has hooks in the MTA process (which is exactly why milter was invented). It uses a simple regex file that can be used with several *source target-mailbox rules to define what gets mirrored where. The archiver tries to be as quiet as possible. The possible methods to archive are SMTP, sendmail inject / Postfix inject, IMAP delivery, and milter-add recipient. It was build as a replacement for a Postfix BCC setup: (sender_bcc_maps = regexp:/etc/postfix/archive; recipient_bcc_maps = regexp:/etc/postfix/archive).
Many times, developers (or even, normal users) run into an issue of searching for a resource that is inside a zip. Worse, sometime the resource is inside a zip that is itself inside another zip (i.e. a nested archive). zfind solves this problem. It is very fast and works on most common archive/compress files. It support full name search as well as regular expression search. Apart from command line usage, it also provides API support that lets you use it in your Java code as a 3rd party library.