Enhanced send_email.py Script for Improved Security, Flexibility, and…

… Error Handling

pysnippets/Communication/send_email.py

@@ -1,50 +1,44 @@
 import smtplib
+import os
 from email.mime.text import MIMEText
 from email.mime.multipart import MIMEMultipart
+from typing import Optional
 
 
 def send_email(
-    sender_email,
-    sender_password,
-    recepient_email,
-    subject,
-    body,
-    smtp_server="smtp.gmail.com",
-    smtp_port=587,
-):
+    sender_email: str,
+    sender_password: str,
+    recipient_email: str,
+    subject: str,
+    body: str,
+    content_type: str = "plain",
+    smtp_server: str = "smtp.gmail.com",
+    smtp_port: int = 587,
+) -> bool:
     """
-    Sends an email using the provided SMTP server.
+    Sends an email to the specified recipient.
 
     Args:
-        sender_email (str): The email address of the sender.
+        sender_email (str): The sender's email address.
         sender_password (str): The password for the sender's email account.
-        recepient_mail (str): The email address of the recepient.
-        subject (str): The subject of the email.
-        body (str): The body of the email.
-        smtp_server (str, optional): The SMTP server to use. Defaults to 'smtp.gmail.com'.
+        recipient_email (str): The recipient's email address.
+        subject (str): The subject line of the email.
+        body (str): The content of the email.
+        content_type (str, optional): The format of the email body, either 'plain' or 'html'. Defaults to 'plain'.
+        smtp_server (str, optional): The SMTP server to connect to. Defaults to 'smtp.gmail.com'.
         smtp_port (int, optional): The port to use for the SMTP server. Defaults to 587.
 
-    Raises:
-        smtplib.SMTPAuthenticationError: If authentication fails.
-        smtplib.SMTPException: If there's an error sending the email.
-
-    Example:
-        send_email(
-            "[email protected]",
-            "your_password",
-            "[email protected]",
-            "Test Subject",
-            "This is a test email",
-        )
+    Returns:
+        bool: True if the email is sent successfully, False otherwise.
     """
     # create the email message
     message = MIMEMultipart()
     message["From"] = sender_email
-    message["To"] = recepient_email
+    message["To"] = recipient_email
     message["Subject"] = subject
 
     # attach the body of the email
-    message.attach(MIMEText(body, "plain"))
+    message.attach(MIMEText(body, content_type))
 
     try:
         # create a secure SSL/TLS connection
@@ -55,22 +49,35 @@ def send_email(
             # send the email
             server.send_message(message)
         print("Email sent successfully!")
+        return True
     except smtplib.SMTPAuthenticationError:
-        print(
-            "SMTP Authentication Error: The server didn't accept the username/password combination."
-        )
-        raise
+        print("SMTP Authentication Error: Please check your credentials.")
+    except smtplib.SMTPConnectError:
+        print("SMTP Connection Error: Unable to connect to the SMTP server.")
+    except smtplib.SMTPServerDisconnected:
+        print("SMTP Disconnection Error: The server unexpectedly disconnected.")
     except smtplib.SMTPException as e:
-        print(f"SMTP Error: An error occured while sending the email: {str(e)}")
-        raise
+        print(f"SMTP Error: An error occurred while sending the email: {str(e)}")
+    except Exception as e:
+        print(f"Network Error: A network-related error occurred: {str(e)}")
+
+    return False
 
 
 if __name__ == "__main__":
-    # NOTE: Never hardcode sensitive information like this in practice
-    send_email(
-        "[email protected]",
-        "password",
-        "[email protected]",
-        "Test Subject",
-        "This is a test Email",
-    )
+    # Load credentials from environment variables for security
+    sender_email = os.getenv("SENDER_EMAIL")
+    sender_password = os.getenv("SENDER_PASSWORD")
+
+    # Ensure credentials are provided
+    if not sender_email or not sender_password:
+        print("Error: Please set the SENDER_EMAIL and SENDER_PASSWORD environment variables.")
+    else:
+        send_email(
+            sender_email=sender_email,
+            sender_password=sender_password,
+            recipient_email="[email protected]",
+            subject="Test Subject",
+            body="<h1>This is a test email</h1><p>This email contains HTML formatting.</p>",
+            content_type="html"
+        )