Python Script for Sending Email with Attachment via SMTP

The article presents a ready‑to‑use Python example for automatically sending an email that includes a screenshot attachment, a common pattern used by UI automation testers to report errors to developers.

The script imports necessary modules from the email package, defines a helper function _format_addr to format addresses, sets sender and receiver credentials, constructs a MIMEMultipart message with proper headers, attaches a text part, reads a JPEG file, encodes it as a base64 attachment, and finally connects to the SMTP server on port 25 to send the email.

Key steps include:

Importing email and smtplib modules.

Formatting sender and recipient addresses with proper UTF‑8 encoding.

Creating a multipart message, adding subject, and attaching plain text.

Reading the image file, setting appropriate MIME headers, and encoding it.

Establishing an SMTP connection, enabling debug output, logging in, sending the message, and closing the connection.

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