[post-it]

Not with a single prompt.

[Vexs]

You could pretty reasonably vibe code that in a single prompt odds are.

Additionally, there are browser extensions that can do this- check on a timer, see if some page content is there, and then notify.

[BeetleB]

Or you could just send a message to OpenClaw to vibe code this for you.

Everything people are suggesting is a lot more work than sending a few messages.