maddin
71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from email.message import EmailMessage
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import smtplib
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import ssl
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@dataclass
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class MailServerSettings:
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smtp_host: str
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smtp_port: int
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smtp_username: str | None
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smtp_password: str | None
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from_email: str
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from_name: str
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use_starttls: bool
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use_ssl: bool
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verify_tls: bool
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timeout_seconds: int = 15
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def _build_context(verify_tls: bool) -> ssl.SSLContext:
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context = ssl.create_default_context()
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if verify_tls:
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return context
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context.check_hostname = False
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context.verify_mode = ssl.CERT_NONE
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return context
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def send_email(
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*,
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settings: MailServerSettings,
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to_email: str,
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subject: str,
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text_body: str,
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) -> None:
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if not settings.smtp_host.strip():
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raise ValueError("SMTP host is empty")
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if not settings.from_email.strip():
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raise ValueError("From email is empty")
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msg = EmailMessage()
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msg["Subject"] = subject
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msg["From"] = f"{settings.from_name} <{settings.from_email}>"
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msg["To"] = to_email
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msg.set_content(text_body)
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ssl_context = _build_context(settings.verify_tls)
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if settings.use_ssl:
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with smtplib.SMTP_SSL(
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settings.smtp_host,
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settings.smtp_port,
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timeout=settings.timeout_seconds,
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context=ssl_context,
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) as smtp:
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if settings.smtp_username:
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smtp.login(settings.smtp_username, settings.smtp_password or "")
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smtp.send_message(msg)
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return
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with smtplib.SMTP(settings.smtp_host, settings.smtp_port, timeout=settings.timeout_seconds) as smtp:
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smtp.ehlo()
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if settings.use_starttls:
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smtp.starttls(context=ssl_context)
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smtp.ehlo()
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if settings.smtp_username:
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smtp.login(settings.smtp_username, settings.smtp_password or "")
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smtp.send_message(msg)
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