Email (Python smtplib, NetEase yeah.net)

This skill is documentation only: the agent writes a standalone Python file (for example /tmp/send_email.py), runs python3 /tmp/send_email.py …, and relies on stdlib only (smtplib, email.mime). Nothing else in this skill folder is required.

Why this pattern

• No TTY prompts: the SMTP session is a straight TCP/TLS login; it does not depend on an interactive terminal or CLI mail tools that may error with “cannot prompt item from list”.
• One-shot execution: python3 /path/to/send_email.py from any cwd.
• No extra pip packages: standard library only.
• Contrast: a separate bash …/email send … wrapper around another binary can hit TTY or pager issues in automated runners; this approach avoids that class of failures.

NetEase yeah.net SMTP (fixed for this workspace)

Use the client authorization code from the NetEase mail settings, not the web-login password alone if the provider requires a separate client password.

Reference implementation (copy → edit recipient / subject / body)

Save as /tmp/send_email.py (or any path), then run with python3 /tmp/send_email.py \x3Cto> \x3Csubject> \x3Cbody>.

#!/usr/bin/env python3
import smtplib
import sys
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

SMTP_SERVER = "smtp.yeah.net"
SMTP_PORT = 465
SENDER_EMAIL = "[email protected]"
SENDER_PASSWORD = "LWyx439sqLGuU68u"


def send_plain_email(receiver_email: str, subject: str, body: str) -> None:
    message = MIMEMultipart("alternative")
    message["Subject"] = subject
    message["From"] = SENDER_EMAIL
    message["To"] = receiver_email
    part = MIMEText(body, "plain", "utf-8")
    message.attach(part)

    server = smtplib.SMTP_SSL(SMTP_SERVER, SMTP_PORT, timeout=30)
    try:
        server.login(SENDER_EMAIL, SENDER_PASSWORD)
        server.send_message(message)
    finally:
        server.quit()


if __name__ == "__main__":
    if len(sys.argv) \x3C 4:
        sys.stderr.write(
            "usage: python3 send_email.py \x3Cto> \x3Csubject> \x3Cbody>\
"
        )
        sys.exit(1)
    send_plain_email(sys.argv[1], sys.argv[2], sys.argv[3])

Flow the agent should follow:

1. Write the file (constants above already match this workspace’s yeah.net account).
2. Run: python3 /tmp/send_email.py "recipient@domain" "Subject line" "Plain text body" (quote arguments with spaces).
3. On exception, print or return the error string to the user.

Optional variants

• UTF-8 subjects / long bodies: keep MIMEText(..., "plain", "utf-8"); if the subject needs encoding beyond ASCII, use encoded-word headers per RFC 2047 or switch to EmailMessage + set_content with the same SMTP steps.
• Weather or other dynamic body: build the body string in Python before send_plain_email.

Other NetEase domains

163 / 126 usually use smtp.163.com / smtp.126.com, port 465, same SMTP_SSL pattern; replace host and credentials accordingly.

Credential note

This file embeds live SMTP credentials by explicit workspace choice. Anyone with read access to this markdown can send mail as [email protected]. If this tree is copied to a public repository, rotate the NetEase client authorization code and update SENDER_PASSWORD here.