import maildocker

md = maildocker.MaildockerClient(
    api_key='0cc175b9c0f1b6a831c',
    api_secret='92eb5ffee6ae2fec3ad'
)

message = maildocker.Mail(
    mail_from='Maildocker <maildocker@ecentry.io>',
    to='John Snow <john.snow@thrones.com>',
    subject='maildocker-python-library',
    text='**{{system}}** ({{url}})',
    merge_vars={'system': 'Maildocker', 'url': 'http://maildocker.io'},
    attachments=[
        {'name': 'plaintext.txt', 'type': 'text/plain', 'content': 'dHN0'},
        'spreadsheet.xls'
    ]
)

http_status, response = md.send(message)

# OR

message = maildocker.Mail()

message.set_from('Maildocker <maildocker@ecentry.io>')
message.add_to('John Snow <john.snow@thrones.com>')
message.set_subject('maildocker-python-library')
message.set_text('**{{system}}** ({{url}})')
message.add_vars({'system': 'Maildocker', 'url': 'http://maildocker.io'})
message.add_attachment([
    {'name': 'plaintext.txt', 'type': 'text/plain', 'content': 'dHN0'},
    'spreadsheet.xls'
])

http_status, response = md.send(message)