├── README.md
└── rfc822_email_validator.py


/README.md:
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 1 | RFC822 Email Validator
 2 | =====================
 3 | 
 4 | A simple, offline Python tool for validating email addresses against the RFC822 standard.
 5 | Perfect for quick checks, integration into scripts, or security testing of email input fields.
 6 | 
 7 | Features
 8 | --------
 9 | - RFC822-compliant: Uses a regular expression closely matching the RFC822 specification.
10 | - Offline: No network connection required.
11 | - Easy to use: Just run the script and enter an email address.
12 | - Security Testing: Useful for testing input validation, including XSS payloads.
13 | 
14 | Usage
15 | -----
16 | 1. Clone the repository or download the script:
17 |    git https://github.com/coffinxp/RFC822-Email-Validator.git)
18 |    cd RFC822-Email-Validator
19 | 
20 | 2. Run the script:
21 |    python3 rfc822_email_validator.py
22 | 
23 | 3. Enter the email address you want to validate when prompted.
24 | 
25 | 4. Result:
26 |    The script will print "RFC822 valid: YES" if the email is valid, or "RFC822 valid: NO" if not.
27 | 
28 | Example
29 | -------
30 | $ python3 rfc822_email_validator.py
31 | Enter email address: test@example.com
32 | RFC822 valid: YES
33 | 
34 | $ python3 rfc822_email_validator.py
35 | Enter email address: "><script>alert(1)</script>@test.com
36 | RFC822 valid: NO
37 | 
38 | ![Screenshot (1397)](https://github.com/user-attachments/assets/6a3ab9a6-efac-43f7-b315-061a97968821)
39 | 
40 | Security Testing
41 | ----------------
42 | You can use this tool to test how your application handles potentially malicious email input, such as XSS payloads.
43 | Example payloads to try:
44 | - "><script>alert(1)</script>@test.com
45 | - "><svg/onload=alert(3)>@test.com
46 | - "><svg/onload=confirm(1337)>"@x.y
47 | 
48 | Requirements
49 | ------------
50 | - Python 3.x
51 | 
52 | ---
53 | Inspired by the classic RFC822 email validation tools and designed for modern security testing workflows.
54 | 


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/rfc822_email_validator.py:
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 1 | import re
 2 | from colorama import init, Fore, Style
 3 | 
 4 | # Initialize colorama
 5 | init(autoreset=True)
 6 | 
 7 | # RFC822-compliant regex (simplified for practical use)
 8 | RFC822_REGEX = re.compile(
 9 |     r"^(?:[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*"
10 |     r'|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")'
11 |     r"@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)$"
12 | )
13 | 
14 | def is_rfc822_valid(email):
15 |     return bool(RFC822_REGEX.match(email))
16 | 
17 | if __name__ == "__main__":
18 |     email = input("Enter email address: ").strip()
19 |     if is_rfc822_valid(email):
20 |         print(f"RFC822 valid: {Fore.GREEN}YES{Style.RESET_ALL}")
21 |     else:
22 |         print(f"RFC822 valid: {Fore.RED}NO{Style.RESET_ALL}")
23 | 


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