Sending mail through amazon SES

ses_mail.py

import os
import boto3
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from bs4 import BeautifulSoup
from html import unescape
from service.response import Response
from email.utils import formataddr

class SESMail(SESConfig):
    def __init__(self, recipient: List, subject: str, body_html: str,
                 filename: str) -> None:
        self.recipient: List = recipient
        self.subject: str = subject
        self.html_body: str = body_html
        self.filename: str = filename

    def __repr__(self) -> str:
        return (f'SENDER: {self.sender_name}\nRECIPIENT: {self.recipient}\n'
                f'SUBJECT: {self.subject}\nMESSAGE: {self.text_body}')

    def _html_to_text(self, html: str) -> str:
        soup = BeautifulSoup(html, 'lxml')
        return unescape(soup.get_text())

    def _preprocess(self) -> None:
        self.text_body: str = self._html_to_text(self.html_body)
        self.message = MIMEMultipart()
        self.message["Subject"] = self.subject
        self.message["From"] = self._sender
        self.message["To"] = ", ".join(self.recipient)
        body = MIMEText(self.text_body, "plain")
        self.message.attach(body)
        with open(self.filename, "rb") as attatchment:
            part = MIMEApplication(attatchment.read())
            part.add_header("Content-Disposition", "attatchment", filename=self.filename.split("/")[-1])
        self.message.attach(part)
        self.sender = formataddr((self.sender_name, self._sender))

    def send_mail(self) -> Response:
        self._preprocess()
        client = boto3.client('ses', region_name=self._aws_region)
        response = client.send_raw_email(
            Destinations=self.recipient,
            RawMessage={"Data": self.message.as_string()},
            Source=self.sender,
        )
        return Response.success('success', response)