Takes an email from stdin and uploads to matrix.

email2matrix.py

import email
import json
import sys
import random

from matrix_client.api import MatrixHttpApi

html_template = (
    "<b>From</b>: %(from)s\n"
    "<b>To</b>: %(to)s\n"
    "<b>Subject</b>: %(subject)s\n"
    "\n"
    "%(body)s\n"
)

text_template = (
    "From: %(from)s\n"
    "To: %(to)s\n"
    "Subject: %(subject)s\n"
    "\n"
    "%(body)s\n"
)

def main(room_id, token):
    msg = email.message_from_file(sys.stdin)

    info = {
        "from": email.utils.parseaddr(msg["From"])[1],
        "to": email.utils.parseaddr(msg["To"])[1],
        "subject": msg["subject"],
    }

    for part in msg.walk():
        if part.get_content_type() == "text/html":
            info["html"] = part.get_payload()
        elif part.get_content_type() == "text/plain":
            info["text"] = part.get_payload()

    if "text" not in info:
        # FIXME
        return

    text_body = text_template % {
        "from": info["from"],
        "to": info["to"],
        "subject": info["subject"],
        "body": info["text"],
    }

    html_body = html_template % {
        "from": info["from"],
        "to": info["to"],
        "subject": info["subject"],
        "body": info["text"] # info["html"] if "html" in info else info["text"],
    }


    content = {
        "body": text_body,
        "msgtype": "m.text",
        "format": "org.matrix.custom.html",
        "formatted_body": html_body,
    }

    api = MatrixHttpApi("https://jki.re", token=token)
    resp = api.send_message_event(
        room_id, "m.room.message", content=content, txn_id=str(random.random())
    )


if __name__ == "__main__":
    main(<room_id>, <access_token>)