1. A system operative on a set of documents annotated by metadata specifying persons associated with documents and their social roles in the documents wherein the annotated documents define a group of representation modes including at least one content type and at least one social role, the system comprising: an electronic processing device configured to perform the operation of: computing a relevance score for a person of interest using a set of queries wherein each query has a target social role by performing one of the relevance scoring sequences R w (p,Q) listed in the tables: w QE DE m′ m″ k d Sequence 5 1 0 N/A B B B ⊕ r′ ⊕ m C (m) (⊕ r′ d x d , ⊕ r′ k ⊕ m″ E (m″) (q k )) 6 1 0 N/A B B A ⊕ r′ ⊕ m ⊕ r′ d C (m) (x d , ⊕ r′ k ⊕ m″ E (m″) (q k )) 7 1 0 N/A B A B ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d x d , ⊕ m″ E (m″) (q k )) 8 1 0 N/A B A A ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (x d , ⊕ m″ E (m″) (q k )) 9 1 0 N/A A B B ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d x d , ⊕ r′ k E (m″) (q k )) 10 1 0 N/A A B A ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (x d , ⊕ r′ k E (m″) (q k )) 11 1 0 N/A A A B ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d x d , E (m″) (q k )) 12 1 0 N/A A A A ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (x d , E (m″) (q k )) 13 0 1 B N/A B B ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ r′ k q k )) 14 0 1 B N/A B A ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k q k )) 15 0 1 B N/A A B ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), q k )) 16 0 1 B N/A A A ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), q k )) 17 0 1 B N/A B B ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k q k )) 18 0 1 B N/A B A ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k q k )) 19 0 1 B N/A A B ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), q k )) 20 0 1 B N/A A A ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), q k )) w QE DE m′ m″ k d 21 1 1 B B B B 22 1 1 B B B A 23 1 1 B B A B 24 1 1 B B A A 25 1 1 B A B B 26 1 1 B A B A 27 1 1 B A A B 28 1 1 B A A A 29 1 1 A B B B 30 1 1 A B B A 31 1 1 A B A B 32 1 1 A B A A 33 1 1 A A B B 34 1 1 A A B A 35 1 1 A A A B 36 1 1 A A A A w Sequence 21 ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 22 ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 23 ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (q k )) 24 ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (q k )) 25 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (q k )) 26 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 27 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (q k )) 28 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), E (m″) (q k )) 29 ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 30 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 31 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), ⊕ m″ E (m″) (q k )) 32 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), ⊕ m″ E (m″) (q k )) 33 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 34 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 35 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), E (m″) (q k )) 36 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), E (m″) (q k )) and w Sequence 5bis ⊕ r′ ⊕ m C (m) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 6bis ⊕ r′ ⊕ m ⊕ r′ d C (m) (x d , ⊕ m″ E (m″) (⊕ r′ k q k )) 9bis ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d x d , E (m″) (⊕ r′ k q k )) 10bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (x d , E (m″) (⊕ r′ k q k )) 13bis ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k q k ) 15bis ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), q k ) 17bis ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k q k ) 19bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), q k ) 21bis ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 21ter ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 21quarter ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 22bis ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 23bis ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (q k )) 25bis ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k E (m″) (q k )) 25ter ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (⊕ r′ k q k )) 25quarter ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), E (m″) (⊕ r′ k q k )) 26bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), E (m″) (⊕ r′ k q k )) 27bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), E (m″) (q k )) 29bis ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 29ter ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 29quarter ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 30bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 31bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (q k )) 33bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k E (m″) (q k )) 33ter ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (⊕ r′ d E (m′) (x d ), E (m″) (⊕ r′ k q k )) 33quarter ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (E (m′) (⊕ r′ d x d ), E (m″) (⊕ r′ k q k )) 34bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d C (m) (E (m′) (x d ), E (m″) (⊕ r′ k q k )) 35bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), E (m″) (q k )) wherein p denotes the person of interest, Q denotes the set of queries, k indexes the queries of the set of queries and r k ′ denotes the target social role of query q k , x d denotes a document where d indexes the documents, C ( . . . ) denotes comparison, ε ( . . . ) denotes enrichment, ⊕ i denotes aggregation over indices i, m indexes the at least one similarity mode, at least one of m′ and m″ index the at least one enrichment mode where m′ denotes document enrichment mode and m″ denotes query enrichment mode and in the table columns headed m′ and m″ the symbol “B” denotes the enriching is performed before the computing of similarities, the symbol “A” denotes the enriching is performed after the computing of similarities, and the symbol “N/A” denotes the enriching is not performed; repeating the computing for each person of a set of persons of interest to compute a relevance score for each person of the set of persons of interest, and at least one of (i) ranking the persons of the set of persons of interest respective to relevance score and (ii) selecting a sub-set of persons from the set of persons of interest who have the highest relevance scores.
1. A system operative on a set of documents annotated by metadata specifying persons associated with documents and their social roles in the documents wherein the annotated documents define a group of representation modes including at least one content type and at least one social role, the system comprising: an electronic processing device configured to perform the operation of: computing a relevance score for a person of interest using a set of queries wherein each query has a target social role by performing one of the relevance scoring sequences R w (p,Q) listed in the tables: w QE DE m′ m″ k d Sequence 5 1 0 N/A B B B ⊕ r′ ⊕ m C (m) (⊕ r′ d x d , ⊕ r′ k ⊕ m″ E (m″) (q k )) 6 1 0 N/A B B A ⊕ r′ ⊕ m ⊕ r′ d C (m) (x d , ⊕ r′ k ⊕ m″ E (m″) (q k )) 7 1 0 N/A B A B ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d x d , ⊕ m″ E (m″) (q k )) 8 1 0 N/A B A A ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (x d , ⊕ m″ E (m″) (q k )) 9 1 0 N/A A B B ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d x d , ⊕ r′ k E (m″) (q k )) 10 1 0 N/A A B A ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (x d , ⊕ r′ k E (m″) (q k )) 11 1 0 N/A A A B ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d x d , E (m″) (q k )) 12 1 0 N/A A A A ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (x d , E (m″) (q k )) 13 0 1 B N/A B B ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ r′ k q k )) 14 0 1 B N/A B A ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k q k )) 15 0 1 B N/A A B ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), q k )) 16 0 1 B N/A A A ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), q k )) 17 0 1 B N/A B B ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k q k )) 18 0 1 B N/A B A ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k q k )) 19 0 1 B N/A A B ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), q k )) 20 0 1 B N/A A A ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), q k )) w QE DE m′ m″ k d 21 1 1 B B B B 22 1 1 B B B A 23 1 1 B B A B 24 1 1 B B A A 25 1 1 B A B B 26 1 1 B A B A 27 1 1 B A A B 28 1 1 B A A A 29 1 1 A B B B 30 1 1 A B B A 31 1 1 A B A B 32 1 1 A B A A 33 1 1 A A B B 34 1 1 A A B A 35 1 1 A A A B 36 1 1 A A A A w Sequence 21 ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 22 ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 23 ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (q k )) 24 ⊕ r′ ⊕ m ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (q k )) 25 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (q k )) 26 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 27 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (q k )) 28 ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (⊕ m′ E (m′) (x d ), E (m″) (q k )) 29 ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 30 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 31 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), ⊕ m″ E (m″) (q k )) 32 ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), ⊕ m″ E (m″) (q k )) 33 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (⊕ r′ d E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 34 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ r′ k E (m″) (q k )) 35 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ k C (m) (⊕ r′ d E (m′) (x d ), E (m″) (q k )) 36 ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d ⊕ r′ k C (m) (E (m′) (x d ), E (m″) (q k )) and w Sequence 5bis ⊕ r′ ⊕ m C (m) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 6bis ⊕ r′ ⊕ m ⊕ r′ d C (m) (x d , ⊕ m″ E (m″) (⊕ r′ k q k )) 9bis ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d x d , E (m″) (⊕ r′ k q k )) 10bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (x d , E (m″) (⊕ r′ k q k )) 13bis ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k q k ) 15bis ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), q k ) 17bis ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k q k ) 19bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), q k ) 21bis ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 21ter ⊕ r′ ⊕ m C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 21quarter ⊕ r′ ⊕ m C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 22bis ⊕ r′ ⊕ m ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 23bis ⊕ r′ ⊕ m ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (q k )) 25bis ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), ⊕ r′ k E (m″) (q k )) 25ter ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ r′ d ⊕ m′ E (m′) (x d ), E (m″) (⊕ r′ k q k )) 25quarter ⊕ r′ ⊕ m ⊕ m″ C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), E (m″) (⊕ r′ k q k )) 26bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ d C (m) (⊕ m′ E (m′) (x d ), E (m″) (⊕ r′ k q k )) 27bis ⊕ r′ ⊕ m ⊕ m″ ⊕ r′ k C (m) (⊕ m′ E (m′) (⊕ r′ d x d ), E (m″) (q k )) 29bis ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k ⊕ m″ E (m″) (q k )) 29ter ⊕ r′ ⊕ m ⊕ m′ C (m) (⊕ r′ d E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 29quarter ⊕ r′ ⊕ m ⊕ m′ C (m) (E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 30bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ d C (m) (E (m′) (x d ), ⊕ m″ E (m″) (⊕ r′ k q k )) 31bis ⊕ r′ ⊕ m ⊕ m′ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), ⊕ m″ E (m″) (q k )) 33bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (E (m′) (⊕ r′ d x d ), ⊕ r′ k E (m″) (q k )) 33ter ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (⊕ r′ d E (m′) (x d ), E (m″) (⊕ r′ k q k )) 33quarter ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ C (m) (E (m′) (⊕ r′ d x d ), E (m″) (⊕ r′ k q k )) 34bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ d C (m) (E (m′) (x d ), E (m″) (⊕ r′ k q k )) 35bis ⊕ r′ ⊕ m ⊕ m′ ⊕ m″ ⊕ r′ k C (m) (E (m′) (⊕ r′ d x d ), E (m″) (q k )) wherein p denotes the person of interest, Q denotes the set of queries, k indexes the queries of the set of queries and r k ′ denotes the target social role of query q k , x d denotes a document where d indexes the documents, C ( . . . ) denotes comparison, ε ( . . . ) denotes enrichment, ⊕ i denotes aggregation over indices i, m indexes the at least one similarity mode, at least one of m′ and m″ index the at least one enrichment mode where m′ denotes document enrichment mode and m″ denotes query enrichment mode and in the table columns headed m′ and m″ the symbol “B” denotes the enriching is performed before the computing of similarities, the symbol “A” denotes the enriching is performed after the computing of similarities, and the symbol “N/A” denotes the enriching is not performed; repeating the computing for each person of a set of persons of interest to compute a relevance score for each person of the set of persons of interest, and at least one of (i) ranking the persons of the set of persons of interest respective to relevance score and (ii) selecting a sub-set of persons from the set of persons of interest who have the highest relevance scores. 2. The system of claim 1 , wherein the set of documents comprises a set of electronic mail (email) documents, the annotated metadata specifies persons associated with email documents at least using email addresses, and the social roles in the documents include at least (i) email sender and (ii) email recipient.