Validate Email using Python- https://pypi.org/project/email-validator/ Installation pip install email-validator Usage Below script read list of emails from file "test.emails". Loop & validate each email in the file. #!/usr/bin/python from email_validator import validate_email, EmailNotValidError filename="/home/dinesh/setuptools-7.0/test.emails" total_count=0 valid_count=0 invalid_count=0 with open(filename, "r") as a_file: for line in a_file: stripped_line = line.strip() print(stripped_line) total_count=total_count+1 try: # Validate. valid = validate_email(stripped_line) valid_count=valid_count+1 # Update with the normalized form. #email = valid.email except EmailNotValidError as e: # email is not valid, exception message is human-readable print(str(e)) invalid_count=invalid_count+1 print("Total Count"+str(total_count)) print("Valid Count"+str(valid_count)) print("Invalid Count"