Python Script for Sending Emails with Attachments Using smtplib

The snippet provides a straightforward Python program that creates a multipart email, attaches a plain‑text body and a file, encodes the attachment, and sends the message through an SMTP server using the smtplib library.

import smtplib import os from email.mime.text import MIMEText from email.mime.multipart import MIMEMultipart from email import encoders user = '[email protected]' # sender email address pwd = 'xxxxxx' # sender password to = ['[email protected]'] # recipient list (can contain multiple addresses) msg = MIMEMultipart() msg['Subject'] = '这里是主题...' content1 = MIMEText('这里是正文！', 'plain', 'utf-8') msg.attach(content1) attfile = 'XXXXXXXX/test.txt' # file path of the attachment basename = os.path.basename(attfile) fp = open(attfile, 'rb') att = MIMEText(fp.read(), 'base64', 'utf-8') att["Content-Type"] = 'application/octet-stream' att.add_header('Content-Disposition', 'attachment', filename=('gbk', '', basename)) encoders.encode_base64(att) msg.attach(att) # ----------------------------------------------------------- s = smtplib.SMTP('smtp.exmail.qq.com') s.login(user, pwd) s.sendmail(user, to, msg.as_string()) print('发送成功') s.close()

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