Not a voicemail, but other memories come up in the same light for me.

I had a woman who was my best friend, a big sister to me, and sadly she died, over 10 years ago now. I miss her every day, and even though she could be a little direct and sometimes unemotional, one of the last messages I ever got from her was possibly the most incredible and supportive messages I could've ever asked for.

She passed away suddenly, and I treasured that text - for about a month or three. I had a T-Mobile Sidekick at the time, and those phones didn't locally cache anything beyond reboots. When the T-Mobile Sidekick servers went down when Microsoft bought Danger, they advised I try restarting knowing what was going on, and what effects it could have.

I lost that message, and all of our communications forever.

Do your best to make sure your data is securely backed up, and don't pass up opportunities to make more good memories with your people.