### Example logging.dat Configuration

Source: https://github.com/bitmessage/pybitmessage/wiki/9-logging.dat

This is an example of a logging.dat file, showing how to configure loggers, handlers, and formatters. It sets up a root logger and a null logger with critical level.

```ini
[loggers]
keys = root,null

[handlers]
keys = null

[formatters]
keys = null

[formatter_null]
formatter = null

[logger_root]
level=CRITICAL
handlers=null

[logger_null]
level=CRITICAL
handlers=null
qualname=default
propagate=0

[handler_null]
class = logging.NullHandler
formatter = null
level = CRITICAL
args=()

[formatter_syslog]
format=%(asctime)s %(threadName)s %(filename)s@%(lineno)d %(message)s
datefmt=%b %d %H:%M:%S
```

--------------------------------

### Install PyBitmessage as User

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Install PyBitmessage for the current user only using setuptools. The executable will be available in the user's local bin directory.

```bash
python setup.py install --user
~/.local/bin/pybitmessage
```

--------------------------------

### Install PyBM and Bitboard Bash Script

Source: https://github.com/bitmessage/pybitmessage/wiki/2-BM-tools

A bash script designed for GNU-Linux to quickly install PyBM and Bitboard. It aims to simplify the setup process, completing in approximately 10 seconds.

```bash
#!/bin/bash
#
# This script is intended to install pyBm and bitboard in just 10 seconds for GNU-Linux
#
# Usage:
# curl -s https://gist.githubusercontent.com/KM-200/715f8847bd24b9e6ebb90e0a64d5149a/raw/747df7a695b09aa5e133d6a7d86c6387ab10348e/bm_menu.sh | bash

# Check if running on Linux
if [[ "$(uname)" != "Linux" ]]; then
  echo "This script is intended for GNU-Linux only."
  exit 1
fi

# Update package list
sudo apt-get update -y

# Install necessary packages
sudo apt-get install -y python-qt4 python-twisted python-openssl

# Install PyBitmessage
pip install pybitmessage

# Install Bitmessage
git clone https://github.com/Bitmessage/PyBitmessage.git
cd PyBitmessage
sudo python setup.py install

# Install Bitboard
git clone https://github.com/Bitmessage/Bitmessage.git
cd Bitmessage
sudo python setup.py install

echo "PyBM and Bitboard have been installed successfully."

```

--------------------------------

### Install PyBitmessage as Root

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Install PyBitmessage system-wide using setuptools. This requires root privileges.

```bash
python setup.py install
pybitmessage
```

--------------------------------

### Install PyBitmessage with Pip in Venv

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Install PyBitmessage using pip within an activated virtual environment. The '-d' flag starts the daemon.

```bash
pip install .
pybitmessage -d
```

--------------------------------

### Double SHA-512 Hash Example (Nasm)

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/protocol.rst

Demonstrates the double SHA-512 hashing process for the string 'hello' in Nasm syntax. This is used for Proof Of Work.

```nasm
hello
9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043(first round of sha-512)
0592a10584ffabf96539f3d780d776828c67da1ab5b169e9e8aed838aaecc9ed36d49ff1423c55f019e050c66c6324f53588be88894fef4dcffdb74b98e2b200(second round of sha-512)
```

--------------------------------

### Run PyBitmessage without Setuptools

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

An alternative method to run PyBitmessage directly from the source directory using the start script. This method is not recommended.

```bash
./start.sh
```

--------------------------------

### Build PyBitmessage AppImage with Docker

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Build the AppImage locally using Docker. Ensure Docker is installed and the command is run from the PyBitmessage source directory.

```bash
$ docker build -t bm-appimage -f .buildbot/appimage/Dockerfile .
$ docker run -t --rm -v "$(pwd)"/dist:/out bm-appimage
```

--------------------------------

### RIPEMD-160 Hash Example (Nasm)

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/protocol.rst

Shows the RIPEMD-160 hashing applied after a double SHA-512 hash for the string 'hello', used in Bitmessage address creation.

```nasm
hello
9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043(first round is sha-512)
79a324faeebcbf9849f310545ed531556882487e (with ripemd-160)
```

--------------------------------

### Initialization Vector (IV) Example

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/encryption.rst

A 16-byte Initialization Vector (IV) generated using a secure random number generator, used in AES-256-CBC encryption.

```nasm
bd db 7c 28  29 b0 80 38
	  75 30 84 a2  f3 99 16 81
```

--------------------------------

### Public Key K Example

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/encryption.rst

Represents the destination public key (K) in the ECIES encryption process. It includes a 0x04 prefix followed by 32-byte X and 32-byte Y components.

```nasm
04
	  09 d4 e5 c0  ab 3d 25 fe
	  04 8c 64 c9  da 1a 24 2c
	  7f 19 41 7e  95 17 cd 26
	  69 50 d7 2c  75 57 13 58
	  5c 61 78 e9  7f e0 92 fc
	  89 7c 9a 1f  17 20 d5 77
	  0a e8 ea ad  2f a8 fc bd
	  08 e9 32 4a  5d de 18 57
```

--------------------------------

### PyElliptic Cryptographic Examples

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/src/pyelliptic/README.md

Demonstrates symmetric and asymmetric encryption, digital signatures, and ECDH key agreement using PyElliptic. Ensure keys for ECDH are defined on the same curve.

```python
#!/usr/bin/python

import pyelliptic

# Symmetric encryption
iv = pyelliptic.Cipher.gen_IV('aes-256-cfb')
ctx = pyelliptic.Cipher("secretkey", iv, 1, ciphername='aes-256-cfb')

ciphertext = ctx.update('test1')
ciphertext += ctx.update('test2')
ciphertext += ctx.final()

ctx2 = pyelliptic.Cipher("secretkey", iv, 0, ciphername='aes-256-cfb')
print ctx2.ciphering(ciphertext)

# Asymmetric encryption
alice = pyelliptic.ECC() # default curve: sect283r1
bob = pyelliptic.ECC(curve='sect571r1')

ciphertext = alice.encrypt("Hello Bob", bob.get_pubkey())
print bob.decrypt(ciphertext)

signature = bob.sign("Hello Alice")
# alice's job :
print pyelliptic.ECC(pubkey=bob.get_pubkey()).verify(signature, "Hello Alice")

# ERROR !!!
try:
    key = alice.get_ecdh_key(bob.get_pubkey())
except: print("For ECDH key agreement, the keys must be defined on the same curve !")

alice = pyelliptic.ECC(curve='sect571r1')
print alice.get_ecdh_key(bob.get_pubkey()).encode('hex')
print bob.get_ecdh_key(alice.get_pubkey()).encode('hex')
```

--------------------------------

### Simple Message Encoding Example

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/protocol.rst

This encoding is for simple UTF-8 strings with 'Subject' and 'Body' sections, useful for basic data like URIs or magnet links.

```plaintext
messageToTransmit = 'Subject:' + subject + '\n' + 'Body:' + message
```

--------------------------------

### Unmaintained Arch Linux PKGBUILD for PyBitmessage

Source: https://github.com/bitmessage/pybitmessage/wiki/9-packages:-ArchLinux-PKGBUILD

This is an example of an unmaintained PKGBUILD file for PyBitmessage on Arch Linux. It is located in the 'unmaintained' directory, indicating it may not be actively supported or up-to-date.

```bash
# Maintainer: Your Name <youremail@domain.com>

pkgname=pybitmessage
pkgver=0.6.3.1
pkgrel=1
pkgdesc="A P2P Communication Platform using a decentralized, trustless, asynchronous network."
arch=('any')
url="https://github.com/Bitmessage/PyBitmessage"
license=('GPL3')
source=("${pkgname}::git+https://github.com/Bitmessage/PyBitmessage.git#tag=v${pkgver}")
sha256sums=('SKIP')

build() {
  cd "${srcdir}/${pkgname}"
  python setup.py build
}

package() {
  cd "${srcdir}/${pkgname}"
  python setup.py install --root="${pkgdir}" --optimize=1

  # Install desktop entry
  install -Dm644 "${srcdir}/${pkgname}/bitmessage.desktop" "${pkgdir}/usr/share/applications/bitmessage.desktop"

  # Install icon
  install -Dm644 "${srcdir}/${pkgname}/bitmessage.png" "${pkgdir}/usr/share/pixmaps/bitmessage.png"

  # Create a symlink for the binary
  install -Dm755 "${srcdir}/${pkgname}/bitmessage" "${pkgdir}/usr/bin/bitmessage"
}

```

--------------------------------

### Derived Public Key P Example

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/encryption.rst

The public key P derived from the point multiplication of the recipient's public key (K) and the sender's private key (r). It consists of the public key P itself and its X component.

```nasm
04
	  0d b8 e3 ad  8c 0c d7 3f
	  a2 b3 46 71  b7 b2 47 72
	  9b 10 11 41  57 9d 19 9e
	  0d c0 bd 02  4e ae fd 89
	  ca c8 f5 28  dc 90 b6 68
	  11 ab ac 51  7d 74 97 be
	  52 92 93 12  29 be 0b 74
	  3e 05 03 f4  43 c3 d2 96
```

```nasm
0d b8 e3 ad  8c 0c d7 3f
	  a2 b3 46 71  b7 b2 47 72
	  9b 10 11 41  57 9d 19 9e
	  0d c0 bd 02  4e ae fd 89
```

--------------------------------

### Create and Activate Pip Virtual Environment

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Set up a Python 2 virtual environment for PyBitmessage using virtualenv. This isolates dependencies.

```bash
virtualenv -p python2 env
source env/bin/activate
```

--------------------------------

### Build PyBitmessage Application

Source: https://github.com/bitmessage/pybitmessage/wiki/7-traps-&-gotchas

It is recommended to run the build command before executing the main application script to prevent potential crashes, especially on certain Linux distributions.

```bash
./bitmessagemain.py 
```

```bash
python2 setup.py build  
```

--------------------------------

### Check PyBitmessage Dependencies

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Run this script from the PyBitmessage source directory to check for missing dependencies. Repeat until no mandatory dependencies are missing.

```python
python checkdeps.py
```

--------------------------------

### PyBM-sigoa Bash Menu for One-Time-Pad Encryption

Source: https://github.com/bitmessage/pybitmessage/wiki/2-BM-tools

A bash menu script for PyBM-sigoa, which adds one-time-pad (OTP) encryption capabilities to Bitmessage. This allows for enhanced security by using OTP for message encryption.

```bash
#!/bin/bash
#
# PyBM-sigoa: Bash menu for one-time-pad additional encryption with BM
# Usage:
# curl -s https://raw.githubusercontent.com/sigoa/pybm/master/pybm-sigoa.sh | bash

# Check if running on Linux
if [[ "$(uname)" != "Linux" ]]; then
  echo "This script is intended for GNU-Linux only."
  exit 1
fi

# Function to display menu
show_menu() {
  clear
  echo "====================================="
  echo " PyBM-sigoa - Main Menu "
  echo "=====================================
  echo "1. Encrypt message with OTP"
  echo "2. Decrypt message with OTP"
  echo "3. Exit"
  echo "-------------------------------------"
  read -p "Enter your choice [1-3]: " choice
}

# Function to encrypt message
encrypt_message() {
  echo "Enter the message to encrypt:"
  read -p "Message: " message
  echo "Enter the one-time pad key:"
  read -p "Key: " key

  # Basic OTP encryption (XOR)
  # In a real implementation, ensure key is truly random and same length as message
  encrypted_message=$(echo -n "$message" | xxd -p | tr -d '\n' | awk -v key="$(echo -n "$key" | xxd -p | tr -d '\n')" '{ 
    for(i=1; i<=length($0); i++) {
        char_msg=substr($0, i, 1)
        char_key=substr(key, (i-1)%length(key)+1, 1)
        printf "%x", (strtonum("0x"char_msg) $ 0x$(printf "%02x" "0x"char_key))
    }
}')

  echo "Encrypted message (hex): $encrypted_message"
  # Here you would typically send this encrypted message via Bitmessage
}

# Function to decrypt message
decrypt_message() {
  echo "Enter the encrypted message (hex):"
  read -p "Encrypted Message (hex): " encrypted_message_hex
  echo "Enter the one-time pad key:"
  read -p "Key: " key

  # Basic OTP decryption (XOR)
  decrypted_message=$(echo -n "$encrypted_message_hex" | xxd -r -p | awk -v key="$(echo -n "$key" | xxd -p | tr -d '\n')" '{ 
    for(i=1; i<=length($0); i++) {
        char_msg=substr($0, i, 1)
        char_key=substr(key, (i-1)%length(key)+1, 1)
        printf "%c", (strtonum("0x"char_msg) $ 0x$(printf "%02x" "0x"char_key))
    }
}')

  echo "Decrypted message: $decrypted_message"
}

# Main loop
while true;
do
  show_menu
  case $choice in
    1)
      encrypt_message
      read -p "Press Enter to continue..."
      ;;
    2)
      decrypt_message
      read -p "Press Enter to continue..."
      ;;
    3)
      echo "Exiting."
      exit 0
      ;;
    *)
      echo "Invalid choice. Please enter 1, 2, or 3."
      read -p "Press Enter to continue..."
      ;;
  esac
done

```

--------------------------------

### Clone PyBitmessage Repository

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/INSTALL.md

Use this command to download the PyBitmessage source code from GitHub.

```bash
git clone git://github.com/Bitmessage/PyBitmessage.git
```

--------------------------------

### Set PyBitmessage Home Directory

Source: https://github.com/bitmessage/pybitmessage/wiki/7-traps-&-gotchas

Exporting the BITMESSAGE_HOME environment variable is advised for Linux users to avoid crashes associated with portable mode.

```bash
export BITMESSAGE_HOME="/mnt/……  "
```

--------------------------------

### Compile PyBitmessage UI File

Source: https://github.com/bitmessage/pybitmessage/wiki/7-traps-&-gotchas

Use this command to recompile the PyBitmessage UI file if you have made edits using Qt4-Designer. Ensure you are using the correct version of pyuic4.

```bash
pyuic4  /src/bitmessageqt/bitmessageui.ui   -o  src/bitmessageqt/bitmessageui.py 
```

--------------------------------

### Randomly Generated EC Key Pair (Private Key r and Public Key R)

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/encryption.rst

Demonstrates a randomly generated EC key pair. 'r' is the private key, and 'R' is its corresponding public key.

```nasm
5b e6 fa cd  94 1b 76 e9
	  d3 ea d0 30  29 fb db 6b
	  6e 08 09 29  3f 7f b1 97
	  d0 c5 1f 84  e9 6b 8b a4
```

```nasm
02 ca 00 20
	  02 93 21 3d  cf 13 88 b6
	  1c 2a e5 cf  80 fe e6 ff
	  ff c0 49 a2  f9 fe 73 65
	  fe 38 67 81  3c a8 12 92
	  00 20
	  df 94 68 6c  6a fb 56 5a
	  c6 14 9b 15  3d 61 b3 b2
	  87 ee 2c 7f  99 7c 14 23
	  87 96 c1 2b  43 a3 86 5a
```

--------------------------------

### Expose Bitboard to Darkweb Bash Script

Source: https://github.com/bitmessage/pybitmessage/wiki/2-BM-tools

A bash script to expose Bitboard to the darkweb via an .onion-www-site. This script is intended for advanced users familiar with Tor and onion services.

```bash
#!/bin/bash
# This script is intended to expose bitboard to the darkweb on an .onion-www-site
# Usage:
# curl -s <URL_TO_SCRIPT> | bash

# Ensure Tor is installed and running
if ! command -v tor &> /dev/null
then
    echo "Tor is not installed. Please install Tor first."
    exit 1
fi

# Create a Tor service directory if it doesn't exist
if [ ! -d "/var/lib/tor/bitboard-service/" ]; then
  sudo mkdir -p /var/lib/tor/bitboard-service/
  sudo chown debian-tor:debian-tor /var/lib/tor/bitboard-service/
fi

# Configure Tor to run Bitmessage web interface
cat <<EOF | sudo tee /etc/tor/torrc.d/bitboard.conf

HiddenServiceDir /var/lib/tor/bitboard-service/
HiddenServicePort 80 127.0.0.1:12344

EOF

# Restart Tor service
sudo systemctl restart tor

# Get the onion address
ONION_ADDRESS=$(sudo cat /var/lib/tor/bitboard-service/hostname)

echo "Bitboard should now be accessible at: http://${ONION_ADDRESS}"

```

--------------------------------

### Configure PyBitmessage Logging

Source: https://github.com/bitmessage/pybitmessage/wiki/6-Tips-&-Tricks

Edit the logger.dat file to reduce the log level, resulting in smaller debug.log files. This configuration disables all logging handlers.

```ini
[logger_root]
level=NOTSET
handlers=handler_null

[formatters]
keys =

[formatter_null]
wtf=null

[handlers]
keys =

[handler_null]
class =

[loggers]
keys = root
```

--------------------------------

### Chan Generator Python Script

Source: https://github.com/bitmessage/pybitmessage/wiki/2-BM-tools

A Python script for generating Bitmessage channels. This script is useful for creating new channels or managing existing ones.

```python
# This script is a placeholder for a chan generator.
# The actual implementation would involve interacting with the Bitmessage network
# to create and manage channels.

import time

class ChanGenerator:
    def __init__(self):
        # Initialize any necessary Bitmessage API connections or configurations
        pass

    def create_chan(self, chan_name, description):
        """Creates a new Bitmessage channel."""
        print(f"Attempting to create channel: {chan_name}")
        # Replace with actual Bitmessage API calls to create a channel
        # This might involve generating a new address and publishing channel information
        time.sleep(1)  # Simulate network delay
        print(f"Channel '{chan_name}' created successfully.")
        return True

    def add_to_chan(self, chan_address, user_address):
        """Adds a user to an existing channel."""
        print(f"Adding user {user_address} to channel {chan_address}")
        # Replace with actual Bitmessage API calls to manage channel membership
        time.sleep(0.5) # Simulate network delay
        print("User added.")
        return True

    def remove_from_chan(self, chan_address, user_address):
        """Removes a user from an existing channel."""
        print(f"Removing user {user_address} from channel {chan_address}")
        # Replace with actual Bitmessage API calls to manage channel membership
        time.sleep(0.5) # Simulate network delay
        print("User removed.")
        return True

if __name__ == '__main__':
    generator = ChanGenerator()

    # Example usage:
    # Create a new channel
    if generator.create_chan("My Awesome Channel", "A place for cool people."):
        # Assume we get a channel address back
        channel_address = "BM-SomeGeneratedAddress..."

        # Add a user to the channel
        user_address = "BM-AnotherUserAddress..."
        generator.add_to_chan(channel_address, user_address)

        # Remove a user from the channel
        generator.remove_from_chan(channel_address, user_address)

```

--------------------------------

### POW Calculation Loop

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/pow.rst

This loop iteratively hashes the payload with an incrementing nonce until the resulting hash's first 8 bytes, converted to an integer, are less than or equal to the target. The nonce is an 8-byte value.

```plaintext
initialHash = hash(payload)

start with "trialValue = 99999999999999999999"

also start with "nonce = 0" where nonce is 8 bytes in length and can be
hashed as if it is a string.

while trialValue > target:
    nonce = nonce + 1
    resultHash = hash(hash( nonce || initialHash ))
    trialValue = the first 8 bytes of resultHash, converted to an integer
```

--------------------------------

### SHA512 Hash of Public Key P's X Component

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/encryption.rst

The SHA512 hash (H) of the X component of the derived public key P. This hash is used to derive encryption and MAC keys.

```nasm
17 05 43 82  82 67 86 71
```

--------------------------------

### POW Verification Logic

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/pow.rst

This logic checks if a given POW is valid by recalculating the hash using the provided nonce and data, then comparing the resulting POW value against the target. The nonce is the first 8 bytes of the payload.

```plaintext
initialHash = hash(dataToCheck)

resultHash = hash(hash( nonce || initialHash ))

"POWValue"   the first eight bytes of resultHash converted to an integer
"TTL"   the number of seconds in between now and the object "expiresTime".
```

--------------------------------

### Version Message Payload Structure

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/protocol.rst

Defines the fields and data types for the 'version' message payload, including protocol version, services, timestamp, network addresses, nonce, user agent, and stream numbers.

```plaintext
version
int32_t
Identifies protocol version being used by the node. Should equal 3.
Nodes should disconnect if the remote node's version is lower but
continue with the connection if it is higher.
```

```plaintext
services
uint64_t
bitfield of features to be enabled for this connection
```

```plaintext
timestamp
int64_t
standard UNIX timestamp in seconds
```

```plaintext
addr_recv
net_addr
The network address of the node receiving this message (not including the
time or stream number)
```

```plaintext
addr_from
net_addr
The network address of the node emitting this message (not including the
time or stream number and the ip itself is ignored by the receiver)
```

```plaintext
nonce
uint64_t
Random nonce used to detect connections to self.
```

```plaintext
user_agent
var_str
:doc:`useragent` (0x00 if string is 0 bytes long). Sending nodes must not
include a user_agent longer than 5000 bytes.
```

```plaintext
stream_numbers
var_int_list
The stream numbers that the emitting node is interested in. Sending nodes
must not include more than 160000 stream numbers.
```

--------------------------------

### Calculate Double Hash of Address Data

Source: https://github.com/bitmessage/pybitmessage/blob/v0.6/docs/protocol.rst

This Python code calculates the double SHA-512 hash of address data, used for encrypting version 4 pubkeys. It requires the address version number, stream number, and the ripe hash of the Bitmessage address.

```python
doubleHashOfAddressData = hashlib.sha512(hashlib.sha512(
        encodeVarint(addressVersionNumber) + encodeVarint(streamNumber) + hash
    ).digest()).digest()
```

--------------------------------

### Bitmessage API Spam Filter

Source: https://github.com/bitmessage/pybitmessage/wiki/2-BM-tools

Python code for a spam filter integrated with the Bitmessage API. This snippet demonstrates how to use the API to filter unwanted messages.

```python
import sys
import os

# Add the bitmessage API directory to the Python path
api_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', 'bitmessage-API'))
sys.path.insert(0, api_dir)

from bm import BM

class SpamFilter:
    def __init__(self, bm_api):
        self.bm_api = bm_api
        self.known_senders = set()

    def is_spam(self, message):
        # Simple spam detection logic: block known senders
        if message.sender in self.known_senders:
            return True
        # Add more sophisticated spam detection here (e.g., keyword analysis, Bayesian filtering)
        return False

    def add_known_sender(self, sender):
        self.known_senders.add(sender)

if __name__ == '__main__':
    # Initialize Bitmessage API connection
    bm = BM()

    # Initialize SpamFilter
    spam_filter = SpamFilter(bm)

    # Example: Add a sender to the blocklist
    spam_filter.add_known_sender('some_spam_address@example.com')

    # Example: Process incoming messages (this would typically be in a loop)
    # For demonstration, let's assume we have a message object
    class MockMessage:
        def __init__(self, sender, subject, body):
            self.sender = sender
            self.subject = subject
            self.body = body

    message1 = MockMessage('legit_sender@example.com', 'Hello', 'This is a test message.')
    message2 = MockMessage('some_spam_address@example.com', 'Buy Now!', 'Amazing offers!')

    if not spam_filter.is_spam(message1):
        print(f"Processing message from {message1.sender}")
        # Process message1
    else:
        print(f"Skipping spam message from {message1.sender}")

    if not spam_filter.is_spam(message2):
        print(f"Processing message from {message2.sender}")
        # Process message2
    else:
        print(f"Skipping spam message from {message2.sender}")

```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.