How do I split mbox file into multiple text files with a custom filename (msg subject + counter)?

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Created May ’17

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Aloha! I am running Mac OSX Yosemite. I have an mbox file exported from my mail system and I would like to run a script to split the file into individual text files, one for each message contained. I also would like the filename to be a customized text string containing the subject of the message and a numeric iterator to resolve the issue of duplicate subjects (I don't want to overwrite messages with identical subjects). I would expect the script to produce file output corresponding to below:
Subject A 1.txt
Subject B 2.txt
Subject C 3.txt
Subject A 4.txt

Mahalo!

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Answer 1

DTS Engineer OP

Apple

May ’17

It’s hard to offer concrete advice without knowing more about your requirements, foremost of which is what language your want to write your script in. If I were in your shoes I’d do this in Python, using the (built-in to macOS) mailbox module.

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