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📧 Improved Email Validator

This project provides a structured email validation script written in Python.
It improves upon simple checks (like just searching for @ and .) by applying multiple
rules to accurately determine whether an email address is correctly formatted.

🚀 Features

✔ 1. Validates correct ordering of @ and .

  • Ensures . appears after @.
  • Prevents invalid formats like:
    • abc.gmail@com
    • @gmail.com
    • abc@gmail.

✔ 2. Checks proper placement of characters

  • Local part (before @) must not be empty.
  • Domain must have a valid extension (like .com, .in, .org).

✔ 3. Handles spaces, dots, and case sensitivity

  • Strips leading/trailing spaces.
  • Converts email to lowercase.
  • Detects consecutive dots such as abc..xyz@gmail.com.

✔ 4. Provides detailed error messages

Instead of printing just “invalid”, the validator explains why the email is invalid.

✔ 5. Uses regex + rule-based logic

A hybrid approach ensures both flexibility and safety.

🧪 Example Output

Input

abc@gmail.com

Output

✓ Email is valid!

Input

@domain.com

Output

✗ Email is invalid due to:

  • Email must contain text before '@'.
  • Email contains invalid characters or structure.

How to Run

python email_validator.py