diff --git a/erpnext/crm/doctype/lead/lead.py b/erpnext/crm/doctype/lead/lead.py
index 49a4e3d..009cfc2 100644
--- a/erpnext/crm/doctype/lead/lead.py
+++ b/erpnext/crm/doctype/lead/lead.py
@@ -64,7 +64,7 @@
 				self.email_id)
 			if len(email_list) > 1:
 				items = [e[0] for e in email_list if e[0]!=self.name]
-				frappe.throw(_("Email id must be unique, already exists for {0}").format(comma_and(items)))
+				frappe.throw(_("Email id must be unique, already exists for {0}").format(comma_and(items)), frappe.DuplicateEntryError)
 
 	def on_trash(self):
 		frappe.db.sql("""update `tabIssue` set lead='' where lead=%s""",
@@ -124,7 +124,7 @@
 		}}, target_doc)
 
 	return target_doc
-	
+
 @frappe.whitelist()
 def make_quotation(source_name, target_doc=None):
 	target_doc = get_mapped_doc("Lead", source_name,
diff --git a/erpnext/hr/doctype/job_applicant/job_applicant.py b/erpnext/hr/doctype/job_applicant/job_applicant.py
index eca767a..d1901a8 100644
--- a/erpnext/hr/doctype/job_applicant/job_applicant.py
+++ b/erpnext/hr/doctype/job_applicant/job_applicant.py
@@ -7,6 +7,7 @@
 from frappe.model.document import Document
 import frappe
 from frappe import _
+from frappe.utils import comma_and
 
 class JobApplicant(Document):
 	def autoname(self):
@@ -15,5 +16,16 @@
 			frappe.throw(_("Name or Email is mandatory"), frappe.NameError)
 		self.name = " - ".join(keys)
 
+	def validate(self):
+		self.check_email_id_is_unique()
+
+	def check_email_id_is_unique(self):
+		if self.email_id:
+			names = frappe.db.sql_list("""select name from `tabJob Application`
+				where email_id=%s and name!=%s""", (self.email_id, self.name))
+
+			if names:
+				frappe.throw(_("Email id must be unique, already exists for {0}").format(comma_and(names)), frappe.DuplicateEntryError)
+
 	def set_sender(self, sender):
 		self.email_id = sender