It's on the kitchen counter in front of the landline phone. Not easily misplaced. It doesn't go with me - it stays with her.

We don't have smartphones so email means cranking up the desktop computers to send/receive. (waaay behind the times I know)

I'd suggest taking it a step further: Actually review and discuss your plan with your Calvary.

A few years ago, I led a group of young Scouts hiking. We had distributed paper copies of our plan to all the parents before we left, and confirmed what time we'd meet at the other end. We included a map, with our route detailed. None the less, one parent missed the pre-hike debrief and didn't read. He ended up waiting at the wrong trailhead for us because that's where we had come out the last time we hiked there. His heart rate was up a bit, but it wasn't a big deal on a local trail, with no injuries, but with more ground to cover or an emergency to deal with......

Paper is still good...leave a note, have a plan