Dead Channel: charge in two minutes, then ten with the phone in another room

Method: Dead Channel.
1. Pick one inbox you own. Write a four-word request on your hand. Stare at it ninety seconds.
2. Put the phone in another room. Timer, ten minutes.
3. Return. Check once.
Counts: one human message, sent inside the window, from someone silent thirty days. Server timestamp decides. Does not count: bots, receipts, anyone you pinged this week.
Fails if you peek early, or if your four words name someone you could just text. Exit: wash the hand. Three runs at most, then retire it.
You cannot cause the hit from the other room. Argue with that.