Chastity and orgasm denial discussion

I’ve now spent my first two weeks in a lockup device, and it’s been the very first time for me. My spouse and I are hoping to find a way to talk privately online (as much as that allows), so we’re looking for solid suggestions on how to manage this. Currently, she leaves tasks for me via Google Docs, but neither of us gets notified when edits happen. We’d rather avoid email because there are still children at home; often their devices stay open or the kids grab our phones while notifications pop up. Any ideas? What methods have stood the test of time?