Can someone help me sort out how our members can read the list messages on the web and respond from there?  So far it seems one must use a mail client in order to be able to respond to the messages. 

What J said.

Also, each email from your group has some links. Here is an example of an individual email, with the links at the bottom (the links will be formatted differently if the message from your group is plain text, rather than formatted):


View/Reply Online brings you to that very message. Group Home brings you to the group's Home page. Your members can use either link to find your group's pages, and from there the Messages list.

Note: if the Privacy section of Settings page of your group has Visibility set to one of the private (not public) archive choices, then your members will have to log in to Groups.io in order to access the Messages. In the upper right of a Groups.io page they should see the Log In link:



As members of your group they already have an account, so they don't need to use the Sign Up form. They may not have a password for their account yet, and if that's the case the Log In form will give them a couple of alternatives:



Either highlighted link will send them an email message that will let them log in to the site. The don't have one yet? message will have a link that will bring them to their account page, where they can set/change their password. The Email me a link to log in message will have a link that brings them back to the page they started at.

Once logged in to the site they should be able to see its Messages page:



Members won't see the Admin button on the left, but they can use the buttons in the left column to view various pages within your group.

Shal