Logstash or python question - parsers for JAM

I’ve been looking to index messages sent to the bbs so we can build a PWA and restful api as a mobile friendly frontend,

Now, we do have standard pop3, nntp available to us as an interface but my google dorking hasn’t turned up anything and the files are stored in a binary JAM(mbp) format.

So my question here is has anyone ran across a module for python that can parse JAM files or any plugin for logstash to pull from pop3/nntp?

Almost forgot about python’s nntplib and poplib but that requires us to setup celery/redis and openfaas to run a custom script which pulls as a user then create a json file.

Down side of that is it is only one user and messages from echomail, and netmail get lost.