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Backend/utils/email_processor.py

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+import aiosmtplib
+from email.message import EmailMessage
+from typing import Optional
+import os
+from pydantic import EmailStr
+import ssl
+
+# aiosmtplib을 사용한 비동기 이메일 전송
+# EmailStr 사용
+
+
+class EmailProcessor:
+    def __init__(self):
+        self.smtp_server = os.getenv("SMTP_SERVER", "smtp.gmail.com")
+        self.smtp_port = int(os.getenv("SMTP_PORT", "587"))
+        self.sender_email = os.getenv("SENDER_EMAIL")
+        self.sender_password = os.getenv("SENDER_PASSWORD")
+        self.receiver_email = ""
+
+    async def send_email(
+        self,
+        subject: str,
+        content: str,
+        sender_email: EmailStr,
+        sender_password: str,
+        html_content: Optional[str] = None,
+    ) -> bool:
+        if not self.sender_email or not self.sender_password:
+            print("Email credentials not configured, cannot send email.")
+            return False
+
+        if not sender_email or not sender_password:
+            print(
+                "Warning: Email credentials (SENDER_EMAIL, SENDER_PASSWORD) "
+                "are not configured in environment variables."
+            )
+            return False
+
+        message = EmailMessage()
+        message["Subject"] = subject
+        message["From"] = sender_email
+        message["To"] = self.receiver_email
+        message.set_content(content)
+
+        # HTML 내용이 있는 경우, 대체 콘텐츠로 추가
+        if html_content:
+            message.add_alternative(html_content, subtype="html")
+
+        try:
+            # 포트 465는 SMTPS (implicit TLS)를 사용하고, 포트 587은 STARTTLS를 사용합니다.
+            use_tls = self.smtp_port == 465
+            context = ssl.create_default_context() if use_tls else None
+
+            await aiosmtplib.send(
+                message,
+                hostname=self.smtp_server,
+                port=self.smtp_port,
+                username=sender_email,
+                password=sender_password,
+                use_tls=use_tls,
+                ssl_context=context,
+                timeout=10,
+            )
+
+            print(f"Email sent successfully to {self.receiver_email}")
+            return True
+
+        except aiosmtplib.SMTPException as e:
+            print(f"SMTP error occurred while sending to {self.receiver_email}: {e}")
+            return False
+        except Exception as e:
+            print(
+                f"An unexpected error occurred while sending email to {self.receiver_email}: {e}"
+            )
+            return False