How do you stop being your team's human reminder?

Every week, the same loop.

I'd ask someone to handle something: get three quotes, review the marketplace listings, pull numbers for the marketing meeting. A few days later I'd follow up. The answer, more often than not: "Sorry, I forgot."

The thing is, they weren't lying. The task was a message in a group chat, buried under fifty others by the next morning. I was asking people to remember things I'd given them nowhere to keep.

So I added a small task module to ReqChain, the purchase approval tool I'm building. A few deliberate choices:

No email if nothing is pending. Reminders go out Monday, Wednesday and Friday at 8am, but only to people who actually have open tasks. If you're clear, you hear nothing. Daily digests become noise within two weeks, and I want this email to mean something when it arrives.

The assignee marks a task as done, but only the person who asked can close it. "Done" and "done the way I needed" aren't always the same thing.

Tasks go down the org chart, not up. You assign to your team, not to your boss.

My theory: when the reminder comes from a system instead of from me, it stops being personal. I'm no longer the boss who nags. It's just the Monday email.

Curious how others deal with this. Do you still chase people manually, or have you found something that actually sticks? And do reminder emails work on your team, or does everyone filter them out?