Who can serve legal documents/Papers?

Currently in Ontario, anyone over 18 years old can serve legal documents and court papers. An advantage of using Motion Legal Service Limited is that we are a neutral third party that can provide evidence that there was either a successful or unsuccessful attempt(s) to serve the document on the opposite party. If it came down to it, the serving party would be able to call the process server as a witness to attest to the service of the document.
Steps on serving documents on YouTube
You Counsel on how to serve Court Documents in Ontario on YouTube