python3 收发邮件，解析邮件内容，附带使用说明，GUI，以及一些遇到的坑weixin45067603的博客-

环境

python3.8.3

代码

#!/usr/bin/python3 # -*- coding: UTF-8 -*- import tkinter as tk from tkinter import * import tkinter.messagebox import smtplib import poplib from email.mime.text import MIMEText from email.header import Header from email.parser import Parser from email.header import decode_header from email.utils import parseaddr  #使用腾讯QQ邮箱发送邮件 def send_email_by_qq(): def send_email():         message = MIMEText(entry_message_context.get(), 'plain', 'utf-8')         message["From"] = Header(entry_sender_email_address.get())         message["To"] = Header(entry_receiver_email.get())         message["Subject"] = Header(entry_message_subject.get(), 'utf-8')         email_client = smtplib.SMTP_SSL(smtp_server_host, smtp_server_port) try: # 验证邮箱及密码是否正确             email_client.login(entry_sender_email_address.get(), entry_sender_email_password.get())             tk.messagebox.showinfo('恭喜','发送成功，请查收') except:             tk.messagebox.showerror('错误','账户OR密码错误') else:             email_client.sendmail(entry_sender_email_address.get(), entry_receiver_email.get(), message.as_string()) finally:             email_client.close() global qq_send_window     qq_send_window = tk.Tk()     qq_send_window.title('使用QQ邮箱发送邮件')     qq_send_window.geometry('500x350') #获取邮件信息     tk.Label(qq_send_window, text='发件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=10)     tk.Label(qq_send_window, text='授权密码：', font=('微软雅黑', 14)).place(x=50, y=40)     tk.Label(qq_send_window, text='收件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=70)     tk.Label(qq_send_window, text='服务器：smtp.qq.com', font=('微软雅黑', 14)).place(x=50, y=100)     tk.Label(qq_send_window, text='服务器端口：465', font=('微软雅黑', 14)).place(x=50, y=130)     tk.Label(qq_send_window, text='邮件主题：', font=('微软雅黑', 14)).place(x=50, y=160)     tk.Label(qq_send_window, text='邮件内容：', font=('微软雅黑', 14)).place(x=50, y=190) #使用QQ邮箱时 global smtp_server_host     smtp_server_host = "smtp.qq.com" global smtp_server_port     smtp_server_port = 465 # 获取发件人邮箱 global sender_email_address     global entry_sender_email_address     sender_email_address = tk.StringVar()     entry_sender_email_address = tk.Entry(qq_send_window, textvariable=sender_email_address, font=('微软雅黑', 14))     entry_sender_email_address.place(x=175, y=10) # 获取授权密码 global sender_email_password     global entry_sender_email_password     sender_email_password = tk.StringVar()     entry_sender_email_password = tk.Entry(qq_send_window, textvariable=sender_email_password, font=('微软雅黑', 14))     entry_sender_email_password.place(x=175, y=40) # 获取收件人邮箱 global receiver_email     global entry_receiver_email     receiver_email = tk.StringVar()     entry_receiver_email = tk.Entry(qq_send_window, textvariable=receiver_email, font=('微软雅黑', 14))     entry_receiver_email.place(x=175, y=70) # 获取邮件主题 global message_subject     global entry_message_subject     message_subject = tk.StringVar()     entry_message_subject = tk.Entry(qq_send_window, textvariable=message_subject, font=('微软雅黑', 14))     entry_message_subject.place(x=175, y=160) # 获取邮件内容 global message_context     global entry_message_context     message_context = tk.StringVar()     entry_message_context = tk.Entry(qq_send_window, textvariable=message_context, font=('微软雅黑', 14))     entry_message_context.place(x=175, y=190) #设置发送按钮     send_button = tk.Button(qq_send_window, text='发送邮件', font=('微软雅黑', 12) , width=18, height=1, command=send_email)     send_button.place(x=150, y=250) #使用网易163邮箱发送邮件 def send_email_by_wy(): def send_email():         message = MIMEText(entry_message_context.get(), 'plain', 'utf-8')         message["From"] = Header(entry_sender_email_address.get())         message["To"] = Header(entry_receiver_email.get())         message["Subject"] = Header(entry_message_subject.get(), 'utf-8')         email_client = smtplib.SMTP_SSL(smtp_server_host, smtp_server_port) try: # 验证邮箱及密码是否正确             email_client.login(entry_sender_email_address.get(), entry_sender_email_password.get())             tk.messagebox.showinfo('恭喜','发送成功，请查收') except:             tk.messagebox.showerror('错误','账户OR密码错误') else:             email_client.sendmail(entry_sender_email_address.get(), entry_receiver_email.get(), message.as_string()) finally:             email_client.close() global wy_send_window     wy_send_window = tk.Tk()     wy_send_window.title('使用网易163邮箱发送邮件')     wy_send_window.geometry('500x350') #获取邮件信息     tk.Label(wy_send_window, text='发件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=10)     tk.Label(wy_send_window, text='授权密码：', font=('微软雅黑', 14)).place(x=50, y=40)     tk.Label(wy_send_window, text='收件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=70)     tk.Label(wy_send_window, text='服务器：smtp.163.com', font=('微软雅黑', 14)).place(x=50, y=100)     tk.Label(wy_send_window, text='服务器端口：465', font=('微软雅黑', 14)).place(x=50, y=130)     tk.Label(wy_send_window, text='邮件主题：', font=('微软雅黑', 14)).place(x=50, y=160)     tk.Label(wy_send_window, text='邮件内容：', font=('微软雅黑', 14)).place(x=50, y=190) #使用网易邮箱时 global smtp_server_host     smtp_server_host = "smtp.163.com" global smtp_server_port     smtp_server_port = 465 # 获取发件人邮箱 global sender_email_address     global entry_sender_email_address     sender_email_address = tk.StringVar()     entry_sender_email_address = tk.Entry(wy_send_window, textvariable=sender_email_address, font=('微软雅黑', 14))     entry_sender_email_address.place(x=175, y=10) # 获取授权密码 global sender_email_password     global entry_sender_email_password     sender_email_password = tk.StringVar()     entry_sender_email_password = tk.Entry(wy_send_window, textvariable=sender_email_password, font=('微软雅黑', 14))     entry_sender_email_password.place(x=175, y=40) # 获取收件人邮箱 global receiver_email     global entry_receiver_email     receiver_email = tk.StringVar()     entry_receiver_email = tk.Entry(wy_send_window, textvariable=receiver_email, font=('微软雅黑', 14))     entry_receiver_email.place(x=175, y=70) # 获取邮件主题 global message_subject     global entry_message_subject     message_subject = tk.StringVar()     entry_message_subject = tk.Entry(wy_send_window, textvariable=message_subject, font=('微软雅黑', 14))     entry_message_subject.place(x=175, y=160) # 获取邮件内容 global message_context     global entry_message_context     message_context = tk.StringVar()     entry_message_context = tk.Entry(wy_send_window, textvariable=message_context, font=('微软雅黑', 14))     entry_message_context.place(x=175, y=190) #设置发送按钮     send_button = tk.Button(wy_send_window, text='发送邮件', font=('微软雅黑', 12) , width=18, height=1, command=send_email)     send_button.place(x=150, y=250) def recv_email_by_pop3_qq(): def recv_email(): try:             email_server = poplib.POP3_SSL(host=pop_server_host, port=pop_server_port, timeout=10) except:             tk.messagebox.showerror('错误', '连接超时')             exit(1) try:             email_server.user(entry_email_address.get()) except:             tk.messagebox.showerror('错误', '邮箱不存在')             exit(1) try: # 验证邮箱密码是否正确             email_server.pass_(entry_email_password.get()) except:             tk.messagebox.showerror('错误', '密码错误')             exit(1)          email_count = len(email_server.list()[1])         resp, lines, octets = email_server.retr(email_count)         email_content = b'rn'.join(lines).decode('utf-8')         msg = Parser().parsestr(email_content)         text = Text(qq_recv_window, width=68, height=28)         text.place(x=10, y=80) def decode_str(s):             value, charset = decode_header(s)[0] if charset:                 value = value.decode(charset) return value          def guess_charset(msg):             charset = msg.get_charset() if charset is None:                 content_type = msg.get('Content-Type', '').lower()                 pos = content_type.find('charset=') if pos >= 0:                     charset = content_type[pos + 8:].strip() return charset          # indent用于缩进显示: def print_info(msg, indent=0): if indent == 0: for header in ['From', 'To', 'Subject']:                     value = msg.get(header, '') if value: if header == 'Subject':                             value = decode_str(value) else:                             hdr, addr = parseaddr(value)                             name = decode_str(hdr)                             value = u'%s <%s>' % (name, addr)                     text.insert(INSERT, '%s%s: %sn' % ('  ' * indent, header, value)) if (msg.is_multipart()):                 parts = msg.get_payload() for n, part in enumerate(parts):                     text.insert(INSERT,'%spart %sn' % ('  ' * indent, n))                     text.insert(INSERT,'%s--------------------' % ('  ' * indent))                     print_info(part, indent + 1) else:                 content_type = msg.get_content_type() if content_type == 'text/plain' or content_type == 'text/html':                     content = msg.get_payload(decode=True)                     charset = guess_charset(msg) if charset:                         content = content.decode(charset)                     text.insert(INSERT, '%sText: %sn' % ('  ' * indent, content)) else:                     text.insert(INSERT, '%sAttachment: %sn' % ('  ' * indent, content_type))          print_info(msg)         email_server.close() global qq_recv_window     qq_recv_window = tk.Tk()     qq_recv_window.title('使用腾讯QQ邮箱接收邮件')     qq_recv_window.geometry('500x500')      tk.Label(qq_recv_window, text='收件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=10)     tk.Label(qq_recv_window, text='授权密码：', font=('微软雅黑', 14)).place(x=50, y=40) # 获取收件人邮箱 global email_address     global entry_email_address     email_address = tk.StringVar()     entry_email_address = tk.Entry(qq_recv_window, textvariable=email_address, font=('微软雅黑', 14))     entry_email_address.place(x=175, y=10) # 获取授权密码 global email_password     global entry_email_password     email_password = tk.StringVar()     entry_email_password = tk.Entry(qq_recv_window, textvariable=email_password, font=('微软雅黑', 14))     entry_email_password.place(x=175, y=40)      email_address = entry_email_address.get()     email_password = entry_email_password.get()     pop_server_host = "pop.qq.com"     pop_server_port = 995      send_button = tk.Button(qq_recv_window, text='接收邮件', font=('微软雅黑', 12) , width=18, height=1, command=recv_email)     send_button.place(x=150, y=450) def recv_email_by_pop3_wy(): def recv_email_wy(): try:             email_server = poplib.POP3_SSL(host=pop_server_host, port=pop_server_port, timeout=10) except:             tk.messagebox.showerror('错误', '连接超时')             exit(1) try:             email_server.user(entry_email_address.get()) except:             tk.messagebox.showerror('错误', '邮箱不存在')             exit(1) try:             email_server.pass_(entry_email_password.get()) except:             tk.messagebox.showerror('错误', '密码错误')             exit(1)          email_count = len(email_server.list()[1])         resp, lines, octets = email_server.retr(email_count)         email_content = b'rn'.join(lines).decode('utf-8')         msg = Parser().parsestr(email_content)         text = Text(wy_recv_window, width=68, height=28)         text.place(x=10, y=80) def decode_str(s):             value, charset = decode_header(s)[0] if charset:                 value = value.decode(charset) return value          def guess_charset(msg):             charset = msg.get_charset() if charset is None:                 content_type = msg.get('Content-Type', '').lower()                 pos = content_type.find('charset=') if pos >= 0:                     charset = content_type[pos + 8:].strip() return charset          def print_info(msg, indent=0): if indent == 0: for header in ['From', 'To', 'Subject']:                     value = msg.get(header, '') if value: if header == 'Subject':                             value = decode_str(value) else:                             hdr, addr = parseaddr(value)                             name = decode_str(hdr)                             value = u'%s <%s>' % (name, addr)                     text.insert(INSERT, '%s%s: %sn' % ('  ' * indent, header, value)) if (msg.is_multipart()):                 parts = msg.get_payload() for n, part in enumerate(parts):                     text.insert(INSERT,'%spart %sn' % ('  ' * indent, n))                     text.insert(INSERT,'%s--------------------' % ('  ' * indent))                     print_info(part, indent + 1) else:                 content_type = msg.get_content_type() if content_type == 'text/plain' or content_type == 'text/html':                     content = msg.get_payload(decode=True)                     charset = guess_charset(msg) if charset:                         content = content.decode(charset)                     text.insert(INSERT, '%sText: %sn' % ('  ' * indent, content)) else:                     text.insert(INSERT, '%sAttachment: %sn' % ('  ' * indent, content_type))          print_info(msg)         email_server.close() global wy_recv_window     wy_recv_window = tk.Tk()     wy_recv_window.title('使用网易163邮箱接收邮件')     wy_recv_window.geometry('500x500')      tk.Label(wy_recv_window, text='收件人邮箱：', font=('微软雅黑', 14)).place(x=50, y=10)     tk.Label(wy_recv_window, text='授权密码：', font=('微软雅黑', 14)).place(x=50, y=40) # 获取收件人邮箱 global email_address     global entry_email_address     email_address = tk.StringVar()     entry_email_address = tk.Entry(wy_recv_window, textvariable=email_address, font=('微软雅黑', 14))     entry_email_address.place(x=175, y=10) # 获取授权密码 global email_password     global entry_email_password     email_password = tk.StringVar()     entry_email_password = tk.Entry(wy_recv_window, textvariable=email_password, font=('微软雅黑', 14))     entry_email_password.place(x=175, y=40)      email_address = entry_email_address.get()     email_password = entry_email_password.get()     pop_server_host = "pop.163.com"     pop_server_port = 995      send_button = tk.Button(wy_recv_window, text='接收邮件', font=('微软雅黑', 12) , width=18, height=1, command=recv_email_wy)     send_button.place(x=150, y=450) def main():     mainwindow=tk.Tk()     mainwindow.title('邮件收发器')     mainwindow.geometry('600x480')     HelloMessage=tk.Label(mainwindow,text='欢迎使用本邮件收发器!',                       font=('微软雅黑',12),                       width=20,height=2)     HelloMessage.pack() #提示选择     InfoMessage1=tk.Label(mainwindow,text='本软件目前仅添加了对腾讯QQ邮箱' 'n和网易163邮箱的支持',                      font=('微软雅黑',12) ,width=25,height=2)     InfoMessage1.pack()      InfoMessage2=tk.Label(mainwindow,text='请选择使用哪种操作',                      font=('微软雅黑',20) ,width=25,height=4)     InfoMessage2.pack()      choose_qq_email1 = tk.Button(mainwindow, text='使用腾讯QQ邮箱发邮件', font=('微软雅黑', 12) , width=18, height=1,command=send_email_by_qq)     choose_qq_email1.place(x=100, y=250)      choose_qq_email2 = tk.Button(mainwindow, text='使用腾讯QQ邮箱收邮件', font=('微软雅黑', 12) , width=18, height=1,command=recv_email_by_pop3_qq)     choose_qq_email2.place(x=100, y=300)      choose_wy_email1 = tk.Button(mainwindow, text='使用网易163邮箱发邮件', font=('微软雅黑', 12) , width=18, height=1,command=send_email_by_wy)     choose_wy_email1.place(x=350, y=250)      choose_wy_email2 = tk.Button(mainwindow, text='使用网易163邮箱收邮件', font=('微软雅黑', 12) , width=18, height=1,command=recv_email_by_pop3_wy)     choose_wy_email2.place(x=350, y=300)      mainwindow.mainloop()  main() 

碰到的坑

在中间的from和to之间不要加utf8，不然可能会乱码导致邮件发送失败

        message = MIMEText(entry_message_context.get(), 'plain', 'utf-8')         message["From"] = Header(entry_sender_email_address.get())         message["To"] = Header(entry_receiver_email.get())         message["Subject"] = Header(entry_message_subject.get(), 'utf-8') 

使用手册

使用QQ邮箱时，需要更改一下设置

第一步打开邮箱首页，点击设置

第二步切换到账户

第三步，往下拉找到服务栏，点击开启pop3和imap服务，发送短信进行验证

需要发送短信，按照要求发送之后点击我已发送

得到授权码，将其复制保存，之后有用

使用网易163邮箱，基本同上，别忘了保存授权密码

参考文章
1.Python3+smtplib+poplib+imaplib实现发送和收取邮件（以qq邮箱为例）
2.POP3收取邮件