diff --git a/lib/mailjet/connection.rb b/lib/mailjet/connection.rb
index a0bd526..8365593 100644
--- a/lib/mailjet/connection.rb
+++ b/lib/mailjet/connection.rb
@@ -6,7 +6,7 @@
 module Mailjet
   class Connection
 
-    attr_accessor :adapter, :public_operations, :read_only
+    attr_accessor :adapter, :public_operations, :read_only, :perform_api_call
     alias :read_only? :read_only
 
     delegate :options, :concat_urls, :url, to: :adapter
@@ -37,36 +37,39 @@ def initialize(end_point, api_key, secret_key, options = {})
       self.read_only = options[:read_only]
       # self.adapter = adapter_class.new(end_point, options.merge(user: api_key, password: secret_key, :verify_ssl => false, content_type: 'application/json'))
       self.adapter = adapter_class.new(end_point, options.merge(user: api_key, password: secret_key, content_type: 'application/json'))
+      self.perform_api_call = options.key?(:perform_api_call) ? options[:perform_api_call] : true
     end
 
-    def get(additional_headers = {}, perform_api_call, &block)
-      handle_api_call(:get, additional_headers, perform_api_call, &block)
+    def get(additional_headers = {}, &block)
+      handle_api_call(:get, additional_headers, &block)
     end
 
-    def post(payload, additional_headers = {}, perform_api_call, &block)
-      handle_api_call(:post, additional_headers, payload, perform_api_call, &block)
+    def post(payload, additional_headers = {}, &block)
+      handle_api_call(:post, additional_headers, payload, &block)
     end
 
-    def put(payload, additional_headers = {}, perform_api_call, &block)
-      handle_api_call(:put, additional_headers, payload, perform_api_call, &block)
+    def put(payload, additional_headers = {}, &block)
+      handle_api_call(:put, additional_headers, payload, &block)
     end
 
-    def delete(additional_headers = {}, perform_api_call, &block)
-      handle_api_call(:delete, additional_headers, perform_api_call, &block)
+    def delete(additional_headers = {}, &block)
+      handle_api_call(:delete, additional_headers, &block)
     end
 
     private
 
-    def handle_api_call(method, additional_headers = {}, payload = {}, perform_api_call, &block)
+    def handle_api_call(method, additional_headers = {}, payload = {}, &block)
       formatted_payload = (additional_headers[:content_type] == :json) ? payload.to_json : payload
       raise Mailjet::MethodNotAllowed unless method_allowed(method)
 
-      if perform_api_call
+      if self.perform_api_call
         if [:get, :delete].include?(method)
           @adapter.send(method, additional_headers, &block)
         else
           @adapter.send(method, formatted_payload, additional_headers, &block)
         end
+      else
+        return {'Count': 0, 'Data': [mock_api_call: true], 'Total': 0}.to_json
       end
     rescue RestClient::Exception => e
       handle_exception(e, additional_headers, formatted_payload)
diff --git a/lib/mailjet/resource.rb b/lib/mailjet/resource.rb
index be734e4..388e817 100644
--- a/lib/mailjet/resource.rb
+++ b/lib/mailjet/resource.rb
@@ -36,7 +36,8 @@ def self.default_connection(options = {})
           options[:api_key] || Mailjet.config.api_key,
           options[:secret_key] || Mailjet.config.secret_key,
           public_operations: public_operations,
-          read_only: read_only)
+          read_only: read_only,
+          perform_api_call: options[:perform_api_call])
       end
 
       def self.default_headers
@@ -57,14 +58,14 @@ def first(params = {}, options = {})
       def all(params = {}, options = {})
         opts = change_resource_path(options)
         params = format_params(params)
-        response = connection(opts).get(default_headers.merge(params: params), opts[:perform_api_call])
+        response = connection(opts).get(default_headers.merge(params: params))
         attribute_array = parse_api_json(response)
         attribute_array.map{ |attributes| instanciate_from_api(attributes) }
       end
 
       def count(options = {})
         opts = change_resource_path(options)
-        response_json = connection(opts).get(default_headers.merge(params: {limit: 1, countrecords: 1}), opts[:perform_api_call])
+        response_json = connection(opts).get(default_headers.merge(params: {limit: 1, countrecords: 1}))
         response_hash = ActiveSupport::JSON.decode(response_json)
         response_hash['Total']
       end
@@ -74,7 +75,7 @@ def find(id, job_id = nil, options = {})
         opts = change_resource_path(options)
         self.resource_path = create_action_resource_path(id, job_id) if self.action
         #
-        attributes = parse_api_json(connection(opts)[id].get(default_headers, opts[:perform_api_call])).first
+        attributes = parse_api_json(connection(opts)[id].get(default_headers)).first
         instanciate_from_api(attributes)
 
       rescue Mailjet::ApiError => e
@@ -120,6 +121,7 @@ def instanciate_from_api(attributes = {})
 
       def parse_api_json(response_json)
         response_hash = ActiveSupport::JSON.decode(response_json)
+
         #Take the response from the API and put it through a method -- taken from the ActiveSupport library -- which converts
         #the date-time from "2014-05-19T15:31:09Z" to "Mon, 19 May 2014 15:31:09 +0000" format.
         response_hash = convert_dates_from(response_hash)
@@ -244,15 +246,17 @@ def persisted?
     end
 
     def save(options = {})
+      opts = self.class.change_resource_path(options)
+
       if persisted?
         # case where the entity is updated
-        response = connection(options)[attributes[:id]].put(formatted_payload, default_headers, options[:perform_api_call])
+        response = connection(opts)[attributes[:id]].put(formatted_payload, default_headers)
       else
         # case where the entity is created
-        response = connection(options).post(formatted_payload, default_headers, options[:perform_api_call])
+        response = connection(opts).post(formatted_payload, default_headers)
       end
 
-      if options[:perform_api_call] && !persisted?
+      if opts[:perform_api_call] && !persisted?
         # get attributes only for entity creation
         self.attributes = if self.resource_path == 'send'
           ActiveSupport::JSON.decode(response)