Fields such as message-id are stored as text strings, but they are only really intended to be used as ids. They don't contain independent text parts.
>From what I have understood so far from reading the ES docs, such fields should be tagged as "index": "not_analyzed" AIUI this reduces the analysis overhead and storage requirements, and also makes it harder to find fields with This probably applies to other fields in "mbox": mid possibly in-reply-to also references And of course the auto-created fields such as attachments Likewise the doc types currently missing from setup.py: notifications account mailinglists These are internal use only so are not intended for searching. Or have I got this completely wrong?
