计算使用 smtplib python 发送的电子邮件数量

Question

我有一个基本的 Python 代码，它可以向 Google 表格列表中的地址发送电子邮件。

我想计算 Python 脚本向特定电子邮件地址发送电子邮件的次数。我试着研究它。我没有找到任何与之相关的东西。作为一个完整的初学者并没有帮助我取得太大的进步。

如果有人能指出一个特定的方向，那将是非常有帮助的。提前非常感谢。

下面是代码

import smtplib
import ssl
from email.mime.text import MIMEText  # New line
from email.utils import formataddr  # New line

# User configuration
sender_email = 'email ID'
sender_name = 'name'
password = "password"

receiver_emails = [RECEIVER_EMAIL_1, RECEIVER_EMAIL_2, RECEIVER_EMAIL_3]
receiver_names = [RECEIVER_NAME_1, RECEIVER_NAME_2, RECEIVER_NAME_3]

# Email text
email_body = '''
    This is a test email sent by Python. Isn't that cool?
'''

for receiver_email, receiver_name in zip(receiver_emails, receiver_names):
    print("Sending the email...")

    # Configurating user's info
    msg = MIMEText(email_body, 'plain')
    msg['To'] = formataddr((receiver_name, receiver_email))
    msg['From'] = formataddr((sender_name, sender_email))
    msg['Subject'] = 'Hello, my friend ' + receiver_name

    try:
        # Creating a SMTP session | use 587 with TLS, 465 SSL and 25
        server = smtplib.SMTP('smtp.gmail.com', 587)
        server.ehlo()
        # Encrypts the email
        context = ssl.create_default_context()
        server.starttls(context=context)
        # We log in into our Google account
        server.login(sender_email, password)
        # Sending email from sender, to receiver with the email body
        server.sendmail(sender_email, receiver_email, msg.as_string())
        print('Email sent!')

    except Exception as e:
        print(f'Oh no! Something bad happened!n {e}')

    finally:
        print('Closing the server...')
        server.quit()

Answer 1

我建议您创建一个成功电子邮件列表，该列表将在每次迭代时填充，然后使用来自collections 模块的Counter，该模块接收一个可迭代对象并返回一个包含每个元素出现次数的对象在可迭代中。 你可以试试下面的代码：

from collections import Counter
import json

counter_file_path = "counter.json"
try:
    with open(counter_file_path, "r") as f:
        email_stats = json.load(f)
except FileNotFoundError as ex:
        email_stats = {}

successful_emails = []
for receiver_email, receiver_name in zip(receiver_emails, receiver_names):
    print("Sending the email...")

    # Configurating user's info
    msg = MIMEText(email_body, 'plain')
    msg['To'] = formataddr((receiver_name, receiver_email))
    msg['From'] = formataddr((sender_name, sender_email))
    msg['Subject'] = 'Hello, my friend ' + receiver_name

    try:
        # Creating a SMTP session | use 587 with TLS, 465 SSL and 25
        server = smtplib.SMTP('smtp.gmail.com', 587)
        server.ehlo()
        # Encrypts the email
        context = ssl.create_default_context()
        server.starttls(context=context)
        # We log in into our Google account
        server.login(sender_email, password)
        # Sending email from sender, to receiver with the email body
        server.sendmail(sender_email, receiver_email, msg.as_string())
        print('Email sent!')
        if receiver_email in email_stats:
            email_stats[receiver_email] += 1
        else:
            email_stats[receiver_email] = 1
    except Exception as e:
        print(f'Oh no! Something bad happened!n {e}')

    finally:
        print('Closing the server...')
        server.quit()

print(email_stats) # output - all occurrences for each email 
with open(counter_file_path, "w") as f:
     json.dump(email_stats, f)

Answer 2

您可以使用此代码将成功邮件计数存储/打印为 JSON 格式。

import smtplib
import SSL
import json
import os
from email.mime.text import MIMEText  # New line
from email.utils import formataddr  # New line

fileName = "sendMail_count.json"
# To store data into json file.
# It will create file in datetime format.
def store_data_to_file(jsonStr):
    jsonFile = open(fileName, "w")
    json.dump(jsonStr, jsonFile)
    print("data stored successfully")

# User configuration
sender_email = 'email ID'
sender_name = 'name'
password = "password"

receiver_emails = [RECEIVER_EMAIL_1, RECEIVER_EMAIL_2, RECEIVER_EMAIL_3]
receiver_names = [RECEIVER_NAME_1, RECEIVER_NAME_2, RECEIVER_NAME_3]

# To store the count of successful mail received by receiver with their respective email.
if not os.path.exists(fileName) or os.stat(fileName).st_size == 0:
    print("File is empty or not found")
    print("Creating a JSON file to store the data")
    jsonFile = open(fileName, "w+")
    print("a JSON file has been created with name: " + str(fileName))
    success_mail_count = {}
else:
    with open(fileName) as jsonFile:
        success_mail_count = json.load(jsonFile)
    print(success_mail_count)

# Email text
email_body = '''
    This is a test email sent by Python. Isn't that cool?
'''

for receiver_email, receiver_name in zip(receiver_emails, receiver_names):
    count = 0
    print("Sending the email to..." + receiver_email)

    # Configurating user's info
    msg = MIMEText(email_body, 'plain')
    msg['To'] = formataddr((receiver_name, receiver_email))
    msg['From'] = formataddr((sender_name, sender_email))
    msg['Subject'] = 'Hello, my friend ' + receiver_name

    try:
        # Creating a SMTP session | use 587 with TLS, 465 SSL and 25
        server = smtplib.SMTP('smtp.gmail.com', 587)
        server.ehlo()
        # Encrypts the email
        context = ssl.create_default_context()
        server.starttls(context=context)
        # We log in into our Google account
        server.login(sender_email, password)
        # Sending email from sender, to receiver with the email body
        server.sendmail(sender_email, receiver_email, msg.as_string())

        # Check if recevier is already present in the dict, 
        # then add 1 to its current count
        if receiver_email in success_mail_count:
            success_mail_count[receiver_email] = str(int(success_mail_count[receiver_email]) + 1)
        # If reciever isn't present in map then create new entry for receiver and 
        # Update the count with one for successfull mail sent.
        else:
            success_mail_count[receiver_email] = str(count + 1)

        print('Email sent!')

    except Exception as e:
        print(f'Oh no! Something bad happened!n {e}')

    finally:
        print('Closing the server...')
        server.quit()

print(success_mail_count)

store_data_to_file(success_mail_count)

运行此代码，它会在文件中创建数据，然后它会从文件本身读取数据。