Joining a mailing list
You need to “subscribe” to a mailing list in order to be able to reply on topics. If you subscribe on a mailing list, you always get a mail when a new topic or reply on a topic was created, so it’d be a good idea to set some filters or use a separate email address.
To subscribe to the “VirtualMonitor” mailing list, send a mail with whatever content to VirtualMonitoremail@example.com. You’ll get a mail from Google Groups on which you have to reply in order to verify your subscription.
Unsubscribing from a mailing list
To unsubscribe from the “VirtualMonitor” mailing list, send an mail with whatever content to VirtualMonitorfirstname.lastname@example.org. You’ll get an email from Google Groups indicating that you have unsubscribed.
To create a new topic in "VirtualMonitor", send a mail to VirtualMonitor@googlegroups.com, subject as topic title, content as topic’s first post’s content.
To reply to a topic, reply to one of those mail-notifications you get when you are subscribed to the mailing list. Be sure to “reply to list” and not to the sender.