SharePoint - Create user list and send emails

RBInsightsDelivery23 Here's an initial & easy solution you can try for now:

1. Create a Power automate flow which will run when new item is created in SharePoint list
2. Use Send an email outlook action in flow to send email notification to M365 group
3. Create item in SharePoint list to test it.

You can start with this Power automate flow template (use outlook instead of Gmail): Send an email on new SharePoint list item creation 

Also, refer this flow template (use item creation trigger only): Send email to Office 365 Group members when a SharePoint item is modified 

Then later you may try to automate distribution list subscription using Power automate flows to add/remove users from M365 group.

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