Hi @[deleted]and welcome to the community,
Jira doesn't do that automatically. On JSM there are queues based on filters to which you can easily add, not the email, but the user of the organization to which that user belongs.
In addition that request enters the queue, which you can sort almost anyhow you like it. From newly created to old, or to SLA, to organization etc.
@[deleted]there is no way, that I know of, to "group" issues e.g. duplicates. As I mentioned above, what you can do is setup the queues in such a way, so as it displays all the issues from one of your customer. Read about creating queues here. During your queue creation you can add on your JQL the reporter to be equal to your specific customer. Afterwards save your queue.
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