Transfer mail from Outlook for Mac to Gmail

README.md

Drag and drop desired messages to directories (e.g., archived/).

Convert directory to mbox file

./eml2mbox.py archived archived.mbox

Follow directions here to upload via Gmail API

https://github.com/google/import-mailbox-to-gmail

eml2mbox.py

#!/usr/bin/env python

""" Converts a directory full of .eml files to a single Unix "mbox" file.

Based on https://gist.github.com/kadin2048/c332a572a388acc22d56
"""

import os
import os.path as osp
import mailbox

from click import command, argument, Path
from tqdm import tqdm


@command()
@argument('input-dir', type=Path(exists=True, file_okay=False))
@argument('output-file', type=Path(exists=False))
def main(input_dir, output_file):
    dest_mbox = mailbox.mbox(output_file, create=True)
    dest_mbox.lock()
    for filename in tqdm(os.listdir(input_dir)):
        assert osp.splitext(filename)[1] == '.eml'
        with open(osp.join(input_dir, filename), 'r') as ip:
            dest_mbox.add(ip)
    dest_mbox.close()


if __name__ == "__main__":
    main()