import os

import sys

import tempfile

import mimetypes

import webbrowser

from email import policy

from email.parser import BytesParser

from imaginary import magic_html_parser

msg = BytesParser(policy=policy.default).parse(open('outgoing.msg', 'rb'))

print('To:', msg['to'])

print('From:', msg['from'])

print('Subject:', msg['subject'])

simplest = msg.get_body(preferencelist=('plain', 'html'))

print()

print(''.join(simplest.get_content().splitlines(keepends=True)[:3]))

ans = input("View full message?")

if ans.lower()[0] == 'n':

sys.exit()

richest = msg.get_body()

partfiles = {}

if richest['content-type'].maintype == 'text':

if richest['content-type'].subtype == 'plain':

for line in richest.get_content().splitlines():

print(line)

sys.exit()

elif richest['content-type'].subtype == 'html':

body = richest

else:

print("Don't know how to display {}".format(richest.get_content_type()))

sys.exit()

elif richest['content-type'].content_type == 'multipart/related':

body = richest.get_body(preferencelist=('html'))

for part in richest.iter_attachments():

fn = part.get_filename()

if fn:

extension = os.path.splitext(part.get_filename())[1]

else:

extension = mimetypes.guess_extension(part.get_content_type())

with tempfile.NamedTemporaryFile(suffix=extension, delete=False) as f:

f.write(part.get_content())

# again strip the <> to go from email form of cid to html form.

partfiles[part['content-id'][1:-1]] = f.name

else:

print("Don't know how to display {}".format(richest.get_content_type()))

sys.exit()

with tempfile.NamedTemporaryFile(mode='w', delete=False) as f:

# The magic_html_parser has to rewrite the href="cid:...." attributes to

# point to the filenames in partfiles. It also has to do a safety-sanitize

# of the html. It could be written using html.parser.

f.write(magic_html_parser(body.get_content(), partfiles))

webbrowser.open(f.name)

os.remove(f.name)

for fn in partfiles.values():

os.remove(fn)

Examples using the Provision API

Here is a reworking of the last example using the provisional API. To make

things a bit more interesting, we include a related image in the html part, and

we save a copy of what we are going to send to disk, as well as sending it.

This example also shows how easy it is to include non-ASCII, and simplifies the

sending of the message using the :meth:`.send_message` method of the

:mod:`smtplib` module.

.. literalinclude:: ../includes/email-alternative-new-api.py

If we were instead sent the message from the last example, here is one

way we could process it:

.. literalinclude:: ../includes/email-read-alternative-new-api.py

Up to the prompt, the output from the above is::