@Pavan 

No, you can only access envelopes from your account. The consent is to use the integrator key from your app.

The customer can use the same integration key, that you used to develop the app, but has to create the Docusign Connect configuration in their account as well.

Can you provide some more context for the application you’ve integrated with?  Are you trying to provide status visibility and round trip of information/documents back to your application?

The Application which I have is a multi-tenet App. The architecture is like My client has his own Clients and those clients have their own Docusign Accounts in which they do not have the App and keys. Using their userID they will give consent to the integrator key placed my in my clients Production account send the envelopes through their own account as the bills will be paid by them. But My application cannot track that envelopes beacuse its sent in clients client docusign account. I dont want them to configure the Connect settings.

I would look into defining your webhook/connect config in the create envelope payload.  This would allow you to control it all on your end.