You can start or join conversations in Google Groups by posting a new topic or responding to posts in your groups.
Start a group discussion about a topic you’re interested in.
Sign in to Google Groups.
Click My Groups.
Choose a group.
At the top, click New topic.
Enter your message.
Click Post.
You can read and respond to posts using the web forum or email, depending on whether the group is set up as a list of topics online or sends emails to your address.
Sign in to Google Groups.
Click My Groups.
Choose a group.
Click the topic you want to read.
You can reply to the group or individually:
To reply to the group, next to the date of the post, click Post reply. Your reply will be the last post in the thread.
To reply only to the person who posted, at the top right of the post, click the Down arrow . Click Reply privately to author. This option is only available if you’re using a Google Account.
To forward a message, at the top right of the post, click the Down arrow . Click Forward.
Click Post.
Click the post in your inbox. You can select any email in the topic thread to reply to.
To respond only to the person who posted, select Reply. To respond to the whole group, select Reply to all.
More posting options:
If you posted something, you can remove it. If you're a moderator, you can remove any post.
Open the post you’d like to delete.
At the top right of the message, next to "Post options," click the Down arrow .
Select Delete post.
In the confirmation box, click OK.