This template has been tested hundreds of times and consistently achieves a 60 %+ reply rate. The key is to record it clearly and enthusiastically.

"Hi there, thanks for connecting with me. I thought I'd just shoot over a voice note instead of being the 77th spam message in your inbox haha."

That's it!

This works like a charm because I'm not even asking for anything.

The simplicity is what makes it effective: