If the requests not email box is not updating their status in a NetCommunity list, this could indicate the constituent is stuck in an limbo status. Typically, this is the result of the recipient opting out of an Imported List and the NetCommunity database has a saved requests no email flag. 

If Blackbaud hosts your organization's NetCommunity site, Click Chat with Support and reference this article. Please be prepared to share the following information with Support:
  • Email Address which needs to be opted in
  • Email Consent from the recipient indicating they want to be opted back in