I want to thank you for the excellent work on the project. Everything turned out exactly as I wanted. The code is well-organized and structured. It is evident that Alexander paid attention to details and used good programming practices. All the main functions - sending, receiving, and searching for messages - work perfectly. It is especially pleasing that all my requests were taken into account and implemented in full. Special thanks for the quick feedback and prompt completion of the work. I will be happy to turn to you again in the future!