I have a combined washer/dryer that has a handy one-touch “wash and dry the stuff in the drum” setting, which is enabled in part by moisture detection in the drying phase. I let it know what kind of fabric it’s dealing with (cotton or synthetics) and it does the rest.

Because of this, the total cycle time can be as little as 40 minutes or as long as 2 hours and I have no real control over it. I would love if it could ping my phone since I wear headphones a lot and often miss the chime.

At this point I think the solution is to have a nearby Raspberry Pi or similar detect the chime with a microphone, then send an old-fashioned email. LOL

edit: Actually, can anyone suggest software to do this with? I already have a Pi-alike in the same room.

I've semi-seriously considered getting one of those flashing process lights that you see on industrial equipment and hooking it up to a pi that monitors the power draw through the outlet and lights up whenever it goes high->low.

Oh you can get a zwave or similar power switch that can monitor power usage that does that for you, no custom rpi required. Then you make an automation that sends a push once power is down after an initial increase minimum.

There are also high power zwave switches that should work with driers too.

Or shit can respect our privacy

Don't know about the audio detection software... you might also think about sampling your home power usage and detecting the characteristic usage pattern of your washing machine..?

The time is not always exact. It can changed based on size of load, or soil level, or how long it takes it to balance the load to spin it.