Send_email_from_CSV: Update with proper email library, etc

projects/Send_email_from_csv/Readme.md

@@ -1,10 +1,43 @@
 # Send Emails from CSV File
 
-### Emails.csv : - Here CSV file Contain List Of Emails
+This project contains a simple bulk email script
+which sends the same message to a list of recipients.
 
-### Credentials.txt : -Contain information about Yoour Email
 
-1. Your Email Address
-2. Your Email Password
+## Dependencies
 
-### CSV module :- As it is lightweight than Pandas.
+This project only requires the Python standard library
+(more specifically, the `csv`, `email`, and `smtplib` modules).
+
+
+## Running the script
+
+The script requires two configuration files:
+
+* `emails.csv` should contain the email addresses to send the message to.
+* `credentials.txt` should contain your SMTP server login credentials,
+  with your user name and your password on sepate lines,
+  with no additional whitespace or other decorations.
+
+The project's directory contains two example files which you'll
+probably both want and need to edit.
+
+Once you have these files set up, simply
+
+```
+python Send_emails.py
+```
+
+
+## Development ideas
+
+A proper email sender would use `Cc:` or `Bcc:` and send the same
+message just once.
+
+Don't play frivolously with this; your email provider,
+and/or the recipient's,
+may have automatic filters which quickly block anyone who sends
+multiple identical messages.
+
+The script simply hardcodes the conventions for Gmail.com.
+Other providers may use a different port number and authentication regime.

projects/Send_email_from_csv/Sending_mail.py

@@ -1,12 +1,13 @@
-import smtplib
 import csv
+from email.message import EmailMessage
+import smtplib
 
 
 def get_credentials(filepath):
     with open("credentials.txt", "r") as f:
-        Email_Address = f.readline()
-        Email_Pass = f.readline()
-    return (Email_Address, Email_Pass)
+        email_address = f.readline()
+        email_pass = f.readline()
+    return (email_address, email_pass)
 
 
 def login(email_address, email_pass, s):
@@ -19,26 +20,27 @@ def login(email_address, email_pass, s):
     print("login")
 
 
-
-def Send_mail():
+def send_mail():
     s = smtplib.SMTP("smtp.gmail.com", 587)
-    Email_Address, Email_Pass = get_credentials("./credentials.txt")
-    login(Email_Address, Email_Pass, s)
-
+    email_address, email_pass = get_credentials("./credentials.txt")
+    login(email_address, email_pass, s)
 
     # message to be sent
-    subject = "Welcome to python"
+    subject = "Welcome to Python"
     body = """Python is an interpreted, high-level,
     general-purpose programming language.\n
     Created by Guido van Rossum and first released in 1991,
     Python's design philosophy emphasizes code readability\n
     with its notable use of significant whitespace"""
-    message = f"Subject : {subject} \n\n {body}"
+
+    message = EmailMessage()
+    message.set_content(body)
+    message['Subject'] = subject
 
     with open("emails.csv", newline="") as csvfile:
         spamreader = csv.reader(csvfile, delimiter=" ", quotechar="|")
         for email in spamreader:
-            s.sendmail(Email_Address, email[0], message)
+            s.send_message(email_address, email[0], message)
             print("Send To " + email[0])
 
     # terminating the session
@@ -47,4 +49,4 @@ def Send_mail():
 
 
 if __name__ == "__main__":
-    Send_mail()
+    send_mail()