mask_email.py

import re

def mask_email(email):
    parts = email.split('@')
    username = parts[0]
    domain = parts[1]
    masked_username = username[0] + '*****' + username[-1]
    masked_email = masked_username + '@' + domain
    return masked_email

# Example usage
email1 = "[email protected]"
email2 = "[email protected]"
print(mask_email(email1))  # Output: e*****[email protected]
print(mask_email(email2))  # Output: j*****[email protected]