Claude Code recommended a Telegram bot over email for this very workflow. I've configured my basement RPi to use my "spare tokens" during off hours. At 5PM it messages me to ask if I want the agent to work this evening. If there's no task in the queue I can add one then using the bot. There's also a set of commands to check on status etc. I'm working on the next step to make it a more automated and if there's no specific task, it will create it's own.