Amy, I think yours is a profound message about what detachment truly is.
You have moved on with your emotional life, and what happened with your former husband is just history, archives, nothing much personal anymore.
Nbay, I'd put the stuff on a flash drive and give it to someone to hold, or put it away in a safe place and forget about it. Maybe keep a couple of messages available in case you need a reminder about what it was really like.
Letting it go, for me, is a measure of how much I have moved on with my own life. At some point, yes truly, it just becomes pretty irrelevant, and that is a day to celebrate our own recovery.
ShootingStar1