How can trigger one single 'Mail Sender' Snap after a 'Oracle Merge' Snap finalized

The ‘Oracle Merge’ Snap sends as many documents to the following Snap as it executes.
In my Case: When the ‘Oracle Merge’ Snap has finalized I want to send a single mail with mapped information.
How can I fix this?

The Tail snap will consume all of the documents from its input view and then output the last N documents. In your case, you can set N to one and that should give you the behavior you want.

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