message_dict = { 'Data':
  'From: ' + mail_sender + 'n'
  'To: ' + mail_receivers_list + 'n'
  'Subject: ' + mail_subject + 'n'
  'MIME-Version: 1.0n'
  'Content-Type: text/html;nn' +
  mail_content}

response = client.send_raw_email(
    Destinations=[
    ],
    FromArn='',
    RawMessage=message_dict,
    ReturnPathArn='',
    Source='',
    SourceArn='',
)

from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText

import boto.ses


AWS_ACCESS_KEY = 'HEREYOURACCESSKEY'
AWS_SECRET_KEY = 'HEREYOURSECRETKEY'

class Email(object):

    def __init__(self, to, subject):
        self.to = to
        self.subject = subject
        self.text = None
        self.attachment = None


    def text(self, text):
        self.text = text

    def add_attachment(self, attachment):
        self.attachment = attachment

    def send(self, from_addr=None, file_name = None):

        connection = boto.ses.connect_to_region(
            'us-east-1',
            aws_access_key_id=AWS_ACCESS_KEY,
            aws_secret_access_key=AWS_SECRET_KEY
        )
        msg = MIMEMultipart()
        msg['Subject'] = self.subject
        msg['From'] = from_addr
        msg['To'] = self.to

        part = MIMEApplication(self.attachment)
        part.add_header('Content-Disposition', 'attachment', filename=file_name)
        part.add_header('Content-Type', 'application/vnd.ms-excel; charset=UTF-8')

        msg.attach(part)

        # the message body
        part = MIMEText(self.text)
        msg.attach(part)

        return connection.send_raw_email(msg.as_string(),source=from_addr,destinations=self.to)

if __name__ == "__main__":
    email = Email(to='toMail@gmail.com', subject='Your subject!')
    email.text('This is a text body.')
    #you could use StringIO.StringIO() to get the file value
    email.add_attachment(yourFileValue)
    email.send(from_addr='from@mail.com',file_name="yourFile.txt")

import os
import boto3
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication


def create_multipart_message(
        sender: str, recipients: list, title: str, text: str=None, html: str=None, attachments: list=None)
        -> MIMEMultipart:
    """
    Creates a MIME multipart message object.
    Uses only the Python `email` standard library.
    Emails, both sender and recipients, can be just the email string or have the format 'The Name <the_email@host.com>'.

    :param sender: The sender.
    :param recipients: List of recipients. Needs to be a list, even if only one recipient.
    :param title: The title of the email.
    :param text: The text version of the email body (optional).
    :param html: The html version of the email body (optional).
    :param attachments: List of files to attach in the email.
    :return: A `MIMEMultipart` to be used to send the email.
    """
    multipart_content_subtype = 'alternative' if text and html else 'mixed'
    msg = MIMEMultipart(multipart_content_subtype)
    msg['Subject'] = title
    msg['From'] = sender
    msg['To'] = ', '.join(recipients)

    # Record the MIME types of both parts - text/plain and text/html.
    # According to RFC 2046, the last part of a multipart message, in this case the HTML message, is best and preferred.
    if text:
        part = MIMEText(text, 'plain')
        msg.attach(part)
    if html:
        part = MIMEText(html, 'html')
        msg.attach(part)

    # Add attachments
    for attachment in attachments or []:
        with open(attachment, 'rb') as f:
            part = MIMEApplication(f.read())
            part.add_header('Content-Disposition', 'attachment', filename=os.path.basename(attachment))
            msg.attach(part)

    return msg


def send_mail(
        sender: str, recipients: list, title: str, text: str=None, html: str=None, attachments: list=None) -> dict:
    """
    Send email to recipients. Sends one mail to all recipients.
    The sender needs to be a verified email in SES.
    """
    msg = create_multipart_message(sender, recipients, title, text, html, attachments)
    ses_client = boto3.client('ses')  # Use your settings here
    return ses_client.send_raw_email(
        Source=sender,
        Destinations=recipients,
        RawMessage={'Data': msg.as_string()}
    )


if __name__ == '__main__':
    sender_ = 'The Sender <the_sender@email.com>'
    recipients_ = ['Recipient One <recipient_1@email.com>', 'recipient_2@email.com']
    title_ = 'Email title here'
    text_ = 'The text versionnwith multiple lines.'
    body_ = """<html><head></head><body><h1>A header 1</h1><br>Some text."""
    attachments_ = ['/path/to/file1/filename1.txt', '/path/to/file2/filename2.txt']

    response_ = send_mail(sender_, recipients_, title_, text_, body_, attachments_)
    print(response_)