[Users] Q. re: tags (tagging locally-saved messages for use outside Claws)

[Victoria Stuart (gmail)]

I have messages sorted into folders, and I wish to tag those messages.

I know how to do that within Claws -- but as far as I can see, those tags are not incorporated into the saved emails (the local, saved plain-text copies of those messages on my hard drive).

The tags only appear on emails in Claws, itself.

Is it possible to do this?  I want to index those messages (e.g with Solr or ElasticSearch), and I want to also include the metadata regarding the folder in which those messages are stored (Ageing; Biochemistry; Cancer; etc.).

    Tags: Cancer 
    From: "Victoria Stuart" <***>
    To: ***
    Subject: Accelerating cancer research with deep learning
    Date: Mon, 19 Dec 2016 21:23:51 -0800

    [snip!]

There are far too many of these (10,000's) to do, manually.

My mail is in the MH format.