This blog article outlines the AttachmentExtractor plugin file access behavior if your service stops running. Please consider the following information: 

The plugins are license independent and will work regardless of the service's license state. 

SharePoint:
The plugin will always return a file as a .url link if it cannot access the stream. 

• For Server2Server authentification the file access to stream the content of a file is requiring the service to run. The reason is that a new JWT token has to be created once every hour, which is not possible from within the plugin.
  Please notice: You must switch to Office 365 to have access to your attachments after stopping a service.  

• Using Online Office 365 login is independent of the AttachmentExtractor service and will be able to access the file streams, as long as the credentials are valid. 

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AzureBlobStorage (ABS):

• ABS is independent of the AttachmentExtractor service and will be able to access the file streams, as long as the SAS-Token is valid. 

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That’s it! We appreciate your feedback! Please share your thoughts by sending an email to support@mscrm-addons.com.