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168 | class Sender:
"""Outgoing-mail facade: send, reply, forward."""
def __init__(self, session: ImapClient, folders: FolderAccess) -> None:
self._session = session
self._folders = folders
self._smtp_host: Optional[SMTPHost] = None
def smtp_host(self) -> SMTPHost:
"""Resolved SMTP host for this account. Cached after first call."""
if self._smtp_host is None:
self._smtp_host = resolve_smtp_host(self._session.user)
return self._smtp_host
def send(
self,
to: Union[str, list[str]],
subject: str,
body: str = "",
*,
html: Optional[str] = None,
cc: Optional[Union[str, list[str]]] = None,
bcc: Optional[Union[str, list[str]]] = None,
reply_to: Optional[str] = None,
attachments: Optional[list[AttachmentLike]] = None,
headers: Optional[dict[str, str]] = None,
save_to_sent: bool = True,
) -> None:
"""Send an email via SMTP, optionally appending to Sent."""
message = _build_message(
sender=self._session.user,
to=to,
subject=subject,
body=body,
html=html,
cc=cc,
bcc=bcc,
reply_to=reply_to,
attachments=attachments,
headers=headers,
)
self.send_message(message, save_to_sent=save_to_sent)
def send_message(
self,
message: EmailMessage,
*,
save_to_sent: bool = True,
) -> None:
"""Send a pre-built EmailMessage."""
if not message.get("From"):
message["From"] = self._session.user
to = message.get("To", "")
try:
with SmtpClient(
host=self.smtp_host(),
user=self._session.user,
password=self._session.password,
) as client:
client.send(message)
except Exception as exc:
console.print(f" [red]✗[/] Failed to send to {to} — {exc}")
raise
console.print(f" [green]✓[/] Email sent to {to}")
if save_to_sent and self._session.is_connected:
with contextlib.suppress(KeyError):
self._folders.sent.append(message.as_bytes())
def reply(
self,
original: Message,
body: str = "",
*,
html: Optional[str] = None,
attachments: Optional[list[AttachmentLike]] = None,
reply_all: bool = False,
save_to_sent: bool = True,
) -> None:
"""Reply to a previously-fetched message, preserving threading."""
subject = original.subject or ""
if not subject.lower().startswith("re:"):
subject = f"Re: {subject}"
to = original.reply_to or original.from_ or ""
cc = original.cc if reply_all else None
headers: dict[str, str] = {}
if original.message_id:
headers["In-Reply-To"] = original.message_id
refs = (original.references or "").split()
refs.append(original.message_id)
headers["References"] = " ".join(refs)
self.send(
to=to,
subject=subject,
body=body,
html=html,
cc=cc,
attachments=attachments,
headers=headers,
save_to_sent=save_to_sent,
)
def forward(
self,
original: Message,
to: Union[str, list[str]],
body: str = "",
*,
attachments: Optional[list[AttachmentLike]] = None,
save_to_sent: bool = True,
) -> None:
"""Forward a previously-fetched message to new recipients."""
subject = original.subject or ""
if not subject.lower().startswith("fwd:"):
subject = f"Fwd: {subject}"
quoted = (
f"\n\n---------- Forwarded message ----------\n"
f"From: {original.from_}\n"
f"Date: {original.date}\n"
f"Subject: {original.subject}\n"
f"To: {original.to_}\n\n"
f"{original.body_text_plain}"
)
self.send(
to=to,
subject=subject,
body=(body + quoted) if body else quoted,
attachments=attachments,
save_to_sent=save_to_sent,
)
|