Tried it with no results. However I hired a firm to run a test for me and that was based on a cold email I got from them, so it worked for them.

Nothing’s more annoying than getting an email and opening it by accident, and 3 minutes later you get an email “saying so and so on my team contacted you and I just want to follow up”. In a few cases I’ve even responded to call them out on their obvious email sequence.