I Created the Let'sCoders Telegram bot(@LetsCodersBot) sends you daily coding challenges. Level up your skills and stay motivated with fresh coding problems delivered right to your inbox. It Sends the Coding Problems daily which were unsolved and only this You can get random Problems.
To use the bot you have to Register at this LetsCoderSite so that it can save your submissions and the bot sends the problems to you.
You can set how many problems you have get from bot daily Not only Codeforces Problems you can also get Atcoder and LeetCode Problems.