diff --git a/modules/client/back/models/client.js b/modules/client/back/models/client.js
index 9ec45f58dd..a14631c224 100644
--- a/modules/client/back/models/client.js
+++ b/modules/client/back/models/client.js
@@ -304,6 +304,42 @@ module.exports = Self => {
         const assignmentChanged = workerIdBefore != workerIdAfter;
         if (assignmentChanged)
             await Self.notifyAssignment(instance, workerIdBefore, workerIdAfter);
+
+        const emails = instance.email ? instance.email.split(',') : null;
+
+        const findParams = [];
+        if (emails.length) {
+            for (let email of emails)
+                findParams.push({email: email});
+        }
+
+        if (instance.phone)
+            findParams.push({phone: instance.phone});
+
+        if (instance.mobile)
+            findParams.push({mobile: instance.mobile});
+
+        const filterObj = {
+            where: {
+                and: [
+                    {or: findParams},
+                    {id: {neq: instance.id}}
+                ]
+            }
+        };
+
+        const clientSameData = await Self.findOne(filterObj);
+
+        if (clientSameData) {
+            await Self.app.models.Mail.create({
+                receiver: 'direccioncomercial@verdnatura.es',
+                subject: `Cliente con email/teléfono/móvil duplicados`,
+                body: 'El cliente ' + instance.id + ' comparte alguno de estos datos con el cliente ' + clientSameData.id +
+                        '\n- Email: ' + instance.email +
+                        '\n- Teléfono: ' + instance.phone +
+                        '\n- Móvil: ' + instance.mobile
+            });
+        }
     });
 
     // Send notification on client worker assignment