diff --git a/app/controllers/api/v1/accounts/contacts_controller.rb b/app/controllers/api/v1/accounts/contacts_controller.rb
index c7b2348ab..b9b9ffafe 100644
--- a/app/controllers/api/v1/accounts/contacts_controller.rb
+++ b/app/controllers/api/v1/accounts/contacts_controller.rb
@@ -22,7 +22,7 @@ class Api::V1::Accounts::ContactsController < Api::V1::Accounts::BaseController
     render json: { error: 'Specify search string with parameter q' }, status: :unprocessable_entity if params[:q].blank? && return
 
     contacts = resolved_contacts.where(
-      'name ILIKE :search OR email ILIKE :search OR phone_number ILIKE :search',
+      'name ILIKE :search OR email ILIKE :search OR phone_number ILIKE :search OR contacts.identifier LIKE :search',
       search: "%#{params[:q]}%"
     )
     @contacts_count = contacts.count
@@ -108,7 +108,7 @@ class Api::V1::Accounts::ContactsController < Api::V1::Accounts::BaseController
   end
 
   def contact_params
-    params.require(:contact).permit(:name, :email, :phone_number, additional_attributes: {}, custom_attributes: {})
+    params.require(:contact).permit(:name, :identifier, :email, :phone_number, additional_attributes: {}, custom_attributes: {})
   end
 
   def contact_custom_attributes
diff --git a/lib/exception_list.rb b/lib/exception_list.rb
index 402523486..b0703626d 100644
--- a/lib/exception_list.rb
+++ b/lib/exception_list.rb
@@ -1,7 +1,8 @@
 module ExceptionList
   REST_CLIENT_EXCEPTIONS = [RestClient::NotFound, RestClient::GatewayTimeout, RestClient::BadRequest,
                             RestClient::MethodNotAllowed, RestClient::Forbidden, RestClient::InternalServerError,
-                            RestClient::Exceptions::OpenTimeout, RestClient::Exceptions::ReadTimeout, SocketError].freeze
+                            RestClient::Exceptions::OpenTimeout, RestClient::Exceptions::ReadTimeout,
+                            RestClient::MovedPermanently, SocketError].freeze
   SMTP_EXCEPTIONS = [
     Net::SMTPSyntaxError
   ].freeze
diff --git a/spec/controllers/api/v1/accounts/contacts_controller_spec.rb b/spec/controllers/api/v1/accounts/contacts_controller_spec.rb
index 1dd152898..dedd34e3c 100644
--- a/spec/controllers/api/v1/accounts/contacts_controller_spec.rb
+++ b/spec/controllers/api/v1/accounts/contacts_controller_spec.rb
@@ -188,6 +188,19 @@ RSpec.describe 'Contacts API', type: :request do
         expect(response.body).to include(contact2.email)
         expect(response.body).not_to include(contact1.email)
       end
+
+      it 'matches the contact respecting the identifier character casing' do
+        contact_normal = create(:contact, name: 'testcontact', account: account, identifier: 'testidentifer')
+        contact_special = create(:contact, name: 'testcontact', account: account, identifier: 'TestIdentifier')
+        get "/api/v1/accounts/#{account.id}/contacts/search",
+            params: { q: 'TestIdentifier' },
+            headers: admin.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:success)
+        expect(response.body).to include(contact_special.identifier)
+        expect(response.body).not_to include(contact_normal.identifier)
+      end
     end
   end
 
@@ -284,7 +297,7 @@ RSpec.describe 'Contacts API', type: :request do
         expect(json_response['payload']['contact']['custom_attributes']).to eq({ 'test' => 'test', 'test1' => 'test1' })
       end
 
-      it 'creates the contact identifier when inbox id is passed' do
+      it 'creates the contact inbox when inbox id is passed' do
         expect do
           post "/api/v1/accounts/#{account.id}/contacts", headers: admin.create_new_auth_token,
                                                           params: valid_params.merge({ inbox_id: inbox.id })
diff --git a/swagger/definitions/request/contact/create.yml b/swagger/definitions/request/contact/create.yml
index 5dc481a76..26e04463a 100644
--- a/swagger/definitions/request/contact/create.yml
+++ b/swagger/definitions/request/contact/create.yml
@@ -5,7 +5,13 @@ properties:
     required: true
   name:
     type: string
+    description: name of the contact
   email:
     type: string
+    description: email of the contact
   phone_number:
     type: string
+    description: phone number of the contact
+  identifier: 
+    type: string
+    description: A unique identifier for the contact in external system
diff --git a/swagger/definitions/request/contact/update.yml b/swagger/definitions/request/contact/update.yml
index cafa35169..7e3d8fc36 100644
--- a/swagger/definitions/request/contact/update.yml
+++ b/swagger/definitions/request/contact/update.yml
@@ -2,7 +2,13 @@ type: object
 properties:
   name:
     type: string
+    description: name of the contact
   email:
     type: string
+    description: email of the contact
   phone_number:
     type: string
+    description: phone number of the contact
+  identifier: 
+    type: string
+    description: A unique identifier for the contact in external system
diff --git a/swagger/paths/contact/search.yml b/swagger/paths/contact/search.yml
index 30ade7b5a..84e782d2d 100644
--- a/swagger/paths/contact/search.yml
+++ b/swagger/paths/contact/search.yml
@@ -8,6 +8,7 @@ get:
     - name: q
       in: query
       type: string
+      description: Search using contact `name`, `identifier`, `email` or `phone number`
     - $ref: '#/parameters/contact_sort_param'
     - $ref: '#/parameters/page'
   responses:
diff --git a/swagger/swagger.json b/swagger/swagger.json
index 935044734..43129026e 100644
--- a/swagger/swagger.json
+++ b/swagger/swagger.json
@@ -1281,7 +1281,8 @@
           {
             "name": "q",
             "in": "query",
-            "type": "string"
+            "type": "string",
+            "description": "Search using contact `name`, `identifier`, `email` or `phone number`"
           },
           {
             "$ref": "#/parameters/contact_sort_param"
@@ -3376,13 +3377,20 @@
           "required": true
         },
         "name": {
-          "type": "string"
+          "type": "string",
+          "description": "name of the contact"
         },
         "email": {
-          "type": "string"
+          "type": "string",
+          "description": "email of the contact"
         },
         "phone_number": {
-          "type": "string"
+          "type": "string",
+          "description": "phone number of the contact"
+        },
+        "identifier": {
+          "type": "string",
+          "description": "A unique identifier for the contact in external system"
         }
       }
     },
@@ -3390,13 +3398,20 @@
       "type": "object",
       "properties": {
         "name": {
-          "type": "string"
+          "type": "string",
+          "description": "name of the contact"
         },
         "email": {
-          "type": "string"
+          "type": "string",
+          "description": "email of the contact"
         },
         "phone_number": {
-          "type": "string"
+          "type": "string",
+          "description": "phone number of the contact"
+        },
+        "identifier": {
+          "type": "string",
+          "description": "A unique identifier for the contact in external system"
         }
       }
     },