HTML email with image to send with python

environment

python3.6
gmail

function

Send html email with python
Use local images in html emails

1. Settings and coding 1

gmail app settings

After logging in to google, move to Next URL

The screen will change to the image below, so turn on the 2-step authentication process and turn it on. Create an app password. Make a note of the app password somewhere.

image (9).png

2. Settings and coding 2

import smtplib
import os
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import formatdate
from email.mime.image import MIMEImage


class Mail:
    def __init__(self):
        setting_ini_dict = read_text_ini('setting_mail.ini')
        mail_dict = setting_ini_dict['mail']
        self.mail_address = mail_dict['address']
        self.mail_type = mail_dict['type']
        self.mail_password = mail_dict['password']
        self.api_url = '{The URL you want to run when you press the button}'

    def send_mail(self, to_addr, msg):
        smtpobj = smtplib.SMTP('smtp.gmail.com', 587)
        smtpobj.ehlo()
        smtpobj.starttls()
        smtpobj.ehlo()
        smtpobj.login(self.mail_address, self.mail_password)
        smtpobj.sendmail(self.mail_address, to_addr, msg.as_string())
        smtpobj.close()

    def create_mail(self, to_address, subject, body_msg, uuid):
        api_url = self.api_url + f'?auth_key={uuid}'
        body_msg = body_msg.replace('@mail_api@', api_url)
        msg = MIMEMultipart('alternative')
        msg.attach(MIMEText(body_msg, 'html'))
        with open('qiita_logo.png', 'rb') as img:
            logo_img = MIMEImage(img.read())
            logo_img.add_header('Content-ID', '<logo_image>')

        with open('mail_icon.png', 'rb') as img:
            mail_img = MIMEImage(img.read())
            mail_img.add_header('Content-ID', '<mail_image>')
        msg.attach(logo_img)
        msg.attach(mail_img)

        msg['Subject'] = subject
        msg['From'] = self.mail_address
        msg['To'] = to_address
        msg['Date'] = formatdate()
        return msg

def read_text(file_path):
    s = ""
    with open(file_path, encoding="utf-8") as f:
        s = f.read()
        # print(s)
    return s

def read_text_ini(file_path):
    """
Reading from ini file
    Args:
        file_path:Path to file+file name

    Returns:
        ini_dic:Lexicographic string in ini file
    """
    import configparser
    ini_dict = configparser.ConfigParser()
    ini_dict.read(file_path, 'UTF-8')
    return ini_dict


mail = Mail()
to_address = '{Email address you want to send}'
subject = 'Email title'
body_msg = read_text('mail_format.html')
uuid = 'testetesfsdf'
msg = mail.create_mail(to_address, subject, body_msg, uuid)
mail.send_mail(to_address, msg)

mail_format.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Email authentication screen</title>
</head>
<body>
<img style="width: 100px;"
     src="cid:logo_image">
<div style="background-color: #d9d9d9; width: 80%; margin: 2% 5% 10% 0; padding: 30px;">
    <p style="text-align: center;"><img style="width: 50px;" src="cid:mail_image"></p>
    <h2 style="padding-left: 4%">Please check your email address</h2>
    <hr style="border:0; border-top:dashed; width: 96%;">
    <p style="padding-left: 4%">Please click this button to confirm your email address.<br>thank you for your cooperation.</p>
    <p style="text-align: center">
        <a style="position: relative;
  display: inline-block;
  padding: 0.25em 0.5em;
  text-decoration: none;
  color: #FFF;
  background: #03A9F4;/*color*/
  border: solid 1px #0f9ada;/*Line color*/
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
  text-shadow: 0 1px 0 rgba(0,0,0,0.2);" href="@mail_api@">Check your email</a>
    </p>
    <hr style="border:0; border-top:dashed; width: 96%;">
    <p style="padding-left: 4%">If you have any questions, please contact support.</p>
</div>
<div style="text-align: center">
    <p>You cannot reply to this email.<br>
        qiita.com Ltd. Qiita <br>
        <a href="https://qiita.com">qiita.com</a> <br>
        <a href="#">privacy policy</a>
    </p>

</div>

</body>
</html>

setting_mail.ini

# setting_mail.ini

[mail]
type = gmail
address = {The gmail address you set earlier}
password = {The password you saved earlier}

qiita_logo.png

mail_icon.png

Email sent

Summary

I was able to send an html email using python and gmail. Sending with base64 by putting a local image in html and sending it, etc. Nowadays, there are some descriptions about methods that cannot be executed, so I summarized them briefly!