diff --git a/src/GitLabHealth-Model-Analysis/GLHUserCatalogueV2.class.st b/src/GitLabHealth-Model-Analysis/GLHUserCatalogueV2.class.st
index d289db3..b9b6c58 100644
--- a/src/GitLabHealth-Model-Analysis/GLHUserCatalogueV2.class.st
+++ b/src/GitLabHealth-Model-Analysis/GLHUserCatalogueV2.class.st
@@ -11,15 +11,21 @@ GLHUserCatalogueV2 class >> loadFromJson: aString [
 	catalogue := self new.
 	dic := (STONJSON fromString: aString) asDictionary.
 	dic associationsDo: [ :assoc |
-		| itsName itsUsername itsCommitNames itsId|
+		| itsName itsUsername itsCommitNames itsId |
 		itsName := assoc key.
 		itsCommitNames := assoc value at: #foundNames.
-		itsUsername :=  assoc value at: #username.
+		itsUsername := assoc value at: #username.
 		itsId := assoc value at: #id.
-		
-		catalogue addUser: (GLHUser new id: itsId; username: itsUsername; name: itsName; yourself ) withNames: itsCommitNames ].
-	
-	^ catalogue . 
+
+		catalogue
+			addUser: (GLHUser new
+					 id: itsId;
+					 username: itsUsername;
+					 name: itsName;
+					 yourself)
+			withNames: itsCommitNames ].
+
+	^ catalogue
 ]
 
 { #category : #'as yet unclassified' }
diff --git a/src/GitLabHealth-Model-Analysis/GitMetric4User.class.st b/src/GitLabHealth-Model-Analysis/GitMetric4User.class.st
index f2e21d7..f1c2d1f 100644
--- a/src/GitLabHealth-Model-Analysis/GitMetric4User.class.st
+++ b/src/GitLabHealth-Model-Analysis/GitMetric4User.class.st
@@ -3,11 +3,26 @@ Class {
 	#superclass : #GitMetric,
 	#instVars : [
 		'itsCommits',
-		'itsMergeRequests'
+		'itsMergeRequests',
+		'emailDomain'
 	],
 	#category : #'GitLabHealth-Model-Analysis'
 }
 
+{ #category : #'email' }
+GitMetric4User >> withUserEmailDomain: aEmailDomain [
+	emailDomain :=  aEmailDomain. 
+]
+
+{ #category : #'email' }
+GitMetric4User >> userEmail [
+	"overide this method to adapt on your situation"
+ 
+	^ ('' join: {
+			          user username.
+			          emailDomain }) asLowercase.
+]
+
 { #category : #'metrics - commits' }
 GitMetric4User >> averageTimeBetweenCommitSince: since until: until overA: aDateWeekMonthOrYear [
 
@@ -663,7 +678,9 @@ GitMetric4User >> initialize [
 	user := GLHUser new.
 	itsProjects := Dictionary new.
 	itsCommits := Dictionary new.
-	itsMergeRequests := Dictionary new
+	itsMergeRequests := Dictionary new.
+	
+	emailDomain := '@generic-domain.com'
 ]
 
 { #category : #accessing }
@@ -691,12 +708,15 @@ GitMetric4User >> loadCommitOfProjects: aCollection since: aTimespan [
 { #category : #loading }
 GitMetric4User >> loadItsMergeRequesWithJiraIssueSince: since until: until [
 
+	|email|
 	itsMergeRequests := self
 		                    loadItsMergeRequestsSince: since
 		                    until: until.
 
+	email := self userEmail. 
+
 	jiraImporter importAllCurrentAndPastIssuesOf:
-		user commits anyOne author_email.
+		email.
 
 	GPJCConnector new
 		gpModel: glhImporter glhModel;
diff --git a/src/GitLabHealth-Model-Analysis/GitMetricExporter.class.st b/src/GitLabHealth-Model-Analysis/GitMetricExporter.class.st
index 6d55fcd..a7fc98d 100644
--- a/src/GitLabHealth-Model-Analysis/GitMetricExporter.class.st
+++ b/src/GitLabHealth-Model-Analysis/GitMetricExporter.class.st
@@ -11,11 +11,14 @@ Class {
 		'runningPeriods',
 		'maxCommitWindow',
 		'over',
-		'analyses'
+		'analyses',
+		'emailDomain'
 	],
 	#category : #'GitLabHealth-Model-Analysis'
 }
 
+
+
 { #category : #'as yet unclassified' }
 GitMetricExporter class >> demoPeriod [
 
@@ -25,6 +28,13 @@ GitMetricExporter class >> demoPeriod [
 		  addAPeriodFrom: '01 march 2024' to: '31 may 2024'
 ]
 
+{ #category : #setup }
+GitMetricExporter >> withEmailDomain: anEmailDomain [
+
+	"define the email domain of your Git user. Usefull to link them between service (i.e. Jira)"
+	emailDomain := anEmailDomain
+]
+
 { #category : #adding }
 GitMetricExporter >> addAPeriodFrom: since to: until [
 
@@ -469,7 +479,7 @@ GitMetricExporter >> onlyImportProjectsOfGroup: groupId [
 	projectCache := group toScope: GLHProject
 ]
 
-{ #category : #adding }
+{ #category : #setup }
 GitMetricExporter >> setupAnalysisForUsersWithNames: userNames [
 	"import all the project since a certain time"
 
@@ -486,6 +496,8 @@ GitMetricExporter >> setupAnalysisForUsersWithNames: userNames [
 			 metrics := GitMetric4User new.
 			 metrics
 				 glhImporter: glhImporter;
+				 jiraImporter: jiraImporter;
+				 withUserEmailDomain: emailDomain;
 				 user: user.
 
 			 i := 0.
diff --git a/src/GitLabHealth-Model-Importer/GLHModelImporter.class.st b/src/GitLabHealth-Model-Importer/GLHModelImporter.class.st
index 69008a4..108b819 100644
--- a/src/GitLabHealth-Model-Importer/GLHModelImporter.class.st
+++ b/src/GitLabHealth-Model-Importer/GLHModelImporter.class.st
@@ -1155,7 +1155,8 @@ GLHModelImporter >> userCatalogue [
 { #category : #accessing }
 GLHModelImporter >> userCatalogue: aGLHUserCatalogue [
 
-	userCatalogue := aGLHUserCatalogue
+	userCatalogue := aGLHUserCatalogue.
+	aGLHUserCatalogue anImporter: self. 
 ]
 
 { #category : #accessing }