If you wish to have your list automatically approve members, you will need to change the “select who can join” from its default setting to “public”.
- Permissions> Basic permissions > Join the group > Select who can join “Public”.
A knowledge base article about How do I set up a list to allow members to subscribe automatically, without needing approval? provided by the UC Berkeley IT Service Hub - Knowledge Portal
If you wish to have your list automatically approve members, you will need to change the “select who can join” from its default setting to “public”.