Report with a filter on a column which is not a primary key

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Hi everyone,

To respond to my client's need, I activated the option "Email Address Sharing" to allow the creation of multiple contacts with the same email.
The aim is that a customer can create as many contacts as subscriptions to a service. If he wants to subscribe to 3 services, he must create 3 contacts.

So what I want now is to display in a view all the contacts with the same email than the one displayed in the opened contact workspace.
For this I don't want to use a search field in which I could copy and paste the contact email.