首先：

1.需要在邮箱中开启smtp服务。

 msg_from = '[email protected]'  # 发送方邮箱
    passwd = 'KD232323PHV'#邮箱识别码（需要在邮箱设置中开启。其自行保存，系统只出现一次，切记！！！！）
    to = ['[email protected]']  # 接收方邮箱

2.电脑防火墙关闭

需求：

文件夹内最新保存的图片，需要推送邮箱。图片以附件的形式

刚开始的代码持续不停发图片给我。后来写了个集合，判断上一张图片是都发过，发过来就不发了，成功解决问题。

技术点：

1、新保存的已经发过的不再重复发邮件

2、图片邮箱附件的形式。

126邮箱推送代码

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
import os
import time
from PIL import Image

def send_email(image_path):
    msg_from = '[email protected]'  # 发送方邮箱
    passwd = 'KD232323PHV'
    to = ['[email protected]']  # 接收方邮箱

    # 设置邮件内容
    msg = MIMEMultipart()
    content = "这个是字符串"
    # 把内容加进去
    # msg.attach(MIMEText(content, 'plain', 'utf-8'))

    # 添加图片文件到邮件信息当中去
    with open(image_path, 'rb') as image_file:
        img_data = image_file.read()
        msg.attach(MIMEImage(img_data, name=os.path.basename(image_path)))

    # 设置邮件主题
    msg['Subject'] = "这个是邮件主题"

    # 发送方信息
    msg['From'] = msg_from

    # 开始发送
    try:
        # 使用SMTP_SSL连接网易126邮箱
        with smtplib.SMTP_SSL("smtp.126.com", 465) as s:
            # 登录邮箱
            s.login(msg_from, passwd)
            # 开始发送
            s.sendmail(msg_from, to, msg.as_string())
        print("邮件发送成功")
    except Exception as e:
        print(f"邮件发送失败：{e}")

def get_latest_screenshot(folder_path):
    # 获取文件夹内最新的截图文件
    screenshots = [f for f in os.listdir(folder_path) if f.endswith('.jpg')]
    if not screenshots:
        print("No screenshot found.")
        return None

    latest_screenshot = max(screenshots, key=lambda x: os.path.getmtime(os.path.join(folder_path, x)))
    return os.path.join(folder_path, latest_screenshot)

def main():
    folder_path = r'C:Users\'  # 替换为存储截图的文件夹路径
    sent_images = set()  # 记录已发送的照片文件名

    i = 1
    while True:
        i += 1
        im = Image.new('RGB', (100, 100))
        im.save('s' + str(i) + '.jpg')

        # 获取最新截图文件路径
        latest_screenshot = get_latest_screenshot(folder_path)

        if latest_screenshot and latest_screenshot not in sent_images:
            # 发送邮件
            send_email(latest_screenshot)
            sent_images.add(latest_screenshot)

        time.sleep(10)  # 修改发送邮件间隔时间
        os.remove('s' + str(i) + '.jpg')

if __name__ == "__main__":
    main()

163邮箱代码：

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
import os
import time
from PIL import Image

def send_email(image_path):
    msg_from = '[email protected]'  # 发送方邮箱
    passwd = 'KD232323PHV'
    to = ['[email protected]']  # 接收方邮箱

    # 设置邮件内容
    msg = MIMEMultipart()
    content = "这个是字符串"
    # 把内容加进去
    # msg.attach(MIMEText(content, 'plain', 'utf-8'))

    # 添加图片文件到邮件信息当中去
    with open(image_path, 'rb') as image_file:
        img_data = image_file.read()
        msg.attach(MIMEImage(img_data, name=os.path.basename(image_path)))

    # 设置邮件主题
    msg['Subject'] = "这个是邮件主题"

    # 发送方信息
    msg['From'] = msg_from

    # 开始发送
    try:
        # 使用SMTP_SSL连接网易163邮箱
        with smtplib.SMTP_SSL("smtp.163.com", 465) as s:
            # 登录邮箱
            s.login(msg_from, passwd)
            # 开始发送
            s.sendmail(msg_from, to, msg.as_string())
        print("邮件发送成功")
    except Exception as e:
        print(f"邮件发送失败：{e}")

def get_latest_screenshot(folder_path):
    # 获取文件夹内最新的截图文件
    screenshots = [f for f in os.listdir(folder_path) if f.endswith('.jpg')]
    if not screenshots:
        print("No screenshot found.")
        return None

    latest_screenshot = max(screenshots, key=lambda x: os.path.getmtime(os.path.join(folder_path, x)))
    return os.path.join(folder_path, latest_screenshot)

def main():
    folder_path = r'C:Users\'  # 替换为存储截图的文件夹路径
    sent_images = set()  # 记录已发送的照片文件名

    i = 1
    while True:
        i += 1
        im = Image.new('RGB', (100, 100))
        im.save('s' + str(i) + '.jpg')

        # 获取最新截图文件路径
        latest_screenshot = get_latest_screenshot(folder_path)

        if latest_screenshot and latest_screenshot not in sent_images:
            # 发送邮件
            send_email(latest_screenshot)
            sent_images.add(latest_screenshot)

        time.sleep(10)  # 修改发送邮件间隔时间
        os.remove('s' + str(i) + '.jpg')

if __name__ == "__main__":
    main()