diff --git a/themis/search/indexer.py b/themis/search/indexer.py
index abdb934..5c5b1ce 100644
--- a/themis/search/indexer.py
+++ b/themis/search/indexer.py
@@ -333,3 +333,21 @@ def statusTitleIndexer(obj):
     return workflow.states[current_state].title
 grok.global_adapter(statusTitleIndexer, name='statusTitle')
 
+
+@indexer(plone.dexterity.interfaces.IDexterityItem)
+def mailHandledByTxtIndexer(obj):
+    if obj.portal_type not in ('courrier_entrant', 'courrier_sortant'):
+        return None
+    values = []
+    for attr in ('traite__par',):
+        if not hasattr(obj, attr):
+            continue
+        if getattr(obj, attr):
+            for person in getattr(obj, attr):
+                values.append(person)
+    if values:
+        return ', '.join(values)
+    else:
+        return None
+
+grok.global_adapter(mailHandledByTxtIndexer, name="mailHandledByTxt")
diff --git a/themis/search/profiles/default/catalog.xml b/themis/search/profiles/default/catalog.xml
index f06c687..6cb1b90 100644
--- a/themis/search/profiles/default/catalog.xml
+++ b/themis/search/profiles/default/catalog.xml
@@ -67,6 +67,7 @@
   <column value="mailContact"/>
   <column value="mailCategoryTxt"/>
   <column value="mailRelatedDocsTxt"/>
+  <column value="mailHandledByTxt"/>
   <column value="mailDate"/>
   <column value="docDate"/>
   <column value="docMeetingDate"/>