Home Assistant: You have got mail

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Today I want to share a little holiday project I build this week: a mailbox sensor to make a dumb mailbox smart and notifying us if we got new mail. I’m talking about real physical mail here - letters, postcards, newspapers etc. dropped into our mailbox. How does it work? # The project is build using two Xiaomi ZigBee contact sensors I had leftover. You can get these from Gearbest, AliExpress, or…

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