I have read that some users have implemented using a Aeotec Smart Switch 6 smart plug to monitor their washing machine to determine if it is running and then get an alert when the cycle is complete.
I did check my electrical panel and the washing machine (Amana NTW4516FW1) is connected to a 15A circuit and the plug does say it can handle a 15A, but just wanted to make sure if it is compatible.