pip install messages2json==0.3.0

A program that can be used to convert messages stored in various mailbox formats into JSON format.

Source
Among fairly niche packages on PyPI.
Over 192 downloads in the last 90 days.

Version usage of messages2json

Proportion of downloaded versions in the last 3 months (only versions over 1%).

0.3.0

55.73%

0.2.0

44.27%