Subscribing with the Listname-Request Address
The public domain list server "majordomo" uses a "listname-request@yourserver.com" address, and ListManager supports this convention for compatibility.
When sent to the listname-request address, any of the following subscribe syntaxes are acceptable:
subscribe
subscribe password
subscribe "your name"
subscribe "your name" password
subscribe password "your name"
All these ways of joining a mailing list is equivalent. It is up to you which method you decide to tell your users to use. There is no “Best Way”, just a way that you are most comfortable with.