diff --git a/application/Espo/Modules/Crm/Resources/i18n/en_US/MassEmail.json b/application/Espo/Modules/Crm/Resources/i18n/en_US/MassEmail.json
index 5d3eb2fdb5..8d11662b4a 100644
--- a/application/Espo/Modules/Crm/Resources/i18n/en_US/MassEmail.json
+++ b/application/Espo/Modules/Crm/Resources/i18n/en_US/MassEmail.json
@@ -42,6 +42,8 @@
         "testSent": "Test email(s) supposed to be sent"
     },
     "tooltips": {
-        "optOutEntirely": "Email addresses of recipients that unsubscribed will be marked as opted out and they will not receive any mass emails anymore."
+        "optOutEntirely": "Email addresses of recipients that unsubscribed will be marked as opted out and they will not receive any mass emails anymore.",
+        "targetLists": "Targets that should receive messages.",
+        "excludingTargetLists": "Targets that should not receive messages."
     }
 }
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/MassEmail.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/MassEmail.json
index 3a5b6c0ee8..c2265092ce 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/MassEmail.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/MassEmail.json
@@ -46,10 +46,12 @@
         },
         "targetLists": {
             "type": "linkMultiple",
-            "required": true
+            "required": true,
+            "tooltip": true
         },
         "excludingTargetLists": {
-            "type": "linkMultiple"
+            "type": "linkMultiple",
+            "tooltip": true
         },
         "inboundEmail": {
             "type": "link"