diff --git a/AmazonPay/Client.php b/AmazonPay/Client.php
index 80dc561..fea25f5 100644
--- a/AmazonPay/Client.php
+++ b/AmazonPay/Client.php
@@ -11,6 +11,9 @@
 require_once 'HttpCurl.php';
 require_once 'ClientInterface.php';
 require_once 'Regions.php';
+require_once(__DIR__.'/Exception/ClientException.php');
+require_once(__DIR__.'/Exception/ConfigException.php');
+require_once(__DIR__.'/Exception/SignatureException.php');
 if (!interface_exists('\Psr\Log\LoggerAwareInterface')) {
     require_once(__DIR__.'/../Psr/Log/LoggerAwareInterface.php');
 }
@@ -18,6 +21,10 @@
 if (!interface_exists('\Psr\Log\LoggerInterface')) {
     require_once(__DIR__.'/../Psr/Log/LoggerInterface.php');
 }
+
+use AmazonPay\Exception\ClientException;
+use AmazonPay\Exception\ConfigException;
+use AmazonPay\Exception\SignatureException;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerInterface;
 
@@ -93,10 +100,10 @@ public function __construct($config = null)
             if (is_array($configArray)) {
                 $this->checkConfigKeys($configArray);
             } else {
-                throw new \Exception('$config is of the incorrect type ' . gettype($configArray) . ' and should be of the type array');
+                throw new ConfigException('$config is of the incorrect type ' . gettype($configArray) . ' and should be of the type array');
             }
         } else {
-            throw new \Exception('$config cannot be null.');
+            throw new ConfigException('$config cannot be null.');
         }
     }
 
@@ -135,11 +142,11 @@ private function checkIfFileExists($config)
 
             if ($jsonError != 0) {
                 $errorMsg = "Error with message - content is not in json format" . $this->getErrorMessageForJsonError($jsonError) . " " . $configArray;
-                throw new \Exception($errorMsg);
+                throw new ConfigException($errorMsg);
             }
         } else {
             $errorMsg ='$config is not a Json File path or the Json File was not found in the path provided';
-            throw new \Exception($errorMsg);
+            throw new ConfigException($errorMsg);
         }
         return $configArray;
     }
@@ -158,7 +165,7 @@ private function checkConfigKeys($config)
             if (array_key_exists($key, $this->config)) {
                 $this->config[$key] = $value;
             } else {
-                throw new \Exception('Key ' . $key . ' is either not part of the configuration or has incorrect Key name.
+                throw new ConfigException('Key ' . $key . ' is either not part of the configuration or has incorrect Key name.
                 check the config array key names to match your key names of your config array', 1);
             }
         }
@@ -201,7 +208,7 @@ public function setSandbox($value)
         if (is_bool($value)) {
             $this->config['sandbox'] = $value;
         } else {
-            throw new \Exception('sandbox value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
+            throw new ConfigException('sandbox value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
         }
     }
 
@@ -214,7 +221,7 @@ public function setClientId($value)
         if (!empty($value)) {
             $this->config['client_id'] = $value;
         } else {
-            throw new \Exception('setter value for client ID provided is empty');
+            throw new ConfigException('setter value for client ID provided is empty');
         }
     }
 
@@ -227,7 +234,7 @@ public function setAppId($value)
         if (!empty($value)) {
             $this->config['app_id'] = $value;
         } else {
-            throw new \Exception('setter value for app ID provided is empty');
+            throw new ConfigException('setter value for app ID provided is empty');
         }
     }
 
@@ -272,7 +279,7 @@ public function __get($name)
         if (array_key_exists(strtolower($name), $this->config)) {
             return $this->config[strtolower($name)];
         } else {
-            throw new \Exception('Key ' . $name . ' is either not a part of the configuration array config or the ' . $name . ' does not match the key name in the config array', 1);
+            throw new ConfigException('Key ' . $name . ' is either not a part of the configuration array config or the ' . $name . ' does not match the key name in the config array', 1);
         }
     }
 
@@ -328,7 +335,7 @@ public function getUserInfo($accessToken)
         // As long as one of these matches, from a security perspective, we have done our due diligence
         if (($data->aud != $this->config['client_id']) && ($data->app_id != $this->config['app_id'])) {
             // The access token does not belong to us
-            throw new \Exception('The Access Token belongs to neither your Client ID nor App ID');
+            throw new ClientException('The Access Token belongs to neither your Client ID nor App ID');
         }
 
         // Exchange the access token for user profile
@@ -363,11 +370,11 @@ private function setParametersAndPost($parameters, $fieldMappings, $requestParam
             // Ensure that no unexpected type coercions have happened
             if ($param === 'capture_now' || $param === 'confirm_now' || $param === 'inherit_shipping_address' || $param === 'request_payment_authorization') {
                 if (!is_bool($value)) {
-                    throw new \Exception($param . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
+                    throw new ClientException($param . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
                 }
             } elseif ($param === 'provider_credit_details' || $param === 'provider_credit_reversal_details' || $param === 'order_item_categories' || $param === 'notification_configuration_list') {
                 if (!is_array($value)) {
-                    throw new \Exception($param . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be an array value');
+                    throw new ClientException($param . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be an array value');
                 }
             }
 
@@ -468,14 +475,14 @@ private function setNotificationConfigurationList($parameters, $configuration)
     {
         $configurationIndex = 0;
         if (!is_array($configuration)) {
-            throw new \Exception('Notification Configuration List value ' . $configuration . ' is of type ' . gettype($configuration) . ' and should be an array value');
+            throw new ClientException('Notification Configuration List value ' . $configuration . ' is of type ' . gettype($configuration) . ' and should be an array value');
         }
         foreach ($configuration as $url => $events) {
             $configurationIndex = $configurationIndex + 1;
             $parameters['NotificationConfigurationList.NotificationConfiguration.' . $configurationIndex . '.NotificationUrl'] = $url;
             $eventIndex = 0;
             if (!is_array($events)) {
-                throw new \Exception('Notification Configuration Events value ' . $events . ' is of type ' . gettype($events) . ' and should be an array value');
+                throw new ClientException('Notification Configuration Events value ' . $events . ' is of type ' . gettype($events) . ' and should be an array value');
             }
             foreach ($events as $event) {
                 $eventIndex = $eventIndex + 1;
@@ -1461,10 +1468,10 @@ public function charge($requestParameters = array()) {
                     $confirmParameters['amazon_billing_agreement_id'] = $requestParameters['amazon_reference_id'];
                     break;
                 default:
-                    throw new \Exception('Invalid Amazon Reference ID');
+                    throw new ClientException('Invalid Amazon Reference ID');
             }
         } else {
-            throw new \Exception('key amazon_order_reference_id or amazon_billing_agreement_id is null and is a required parameter');
+            throw new ClientException('key amazon_order_reference_id or amazon_billing_agreement_id is null and is a required parameter');
         }
 
         // Set the other parameters if the values are present
@@ -1519,7 +1526,7 @@ private function makeChargeCalls($chargeType, $setParameters, $confirmParameters
                 }
 
                 if ($oroStatus['State'] != 'Open' && $oroStatus['State'] != 'Draft') {
-                    throw new \Exception('The Order Reference is in the ' . $oroStatus['State'] . " State. It should be in the Draft or Open State");
+                    throw new ClientException('The Order Reference is in the ' . $oroStatus['State'] . " State. It should be in the Draft or Open State");
                 }
                 
                 return $response;
@@ -1550,13 +1557,13 @@ private function makeChargeCalls($chargeType, $setParameters, $confirmParameters
                 }
         
                 if ($baStatus['State'] != 'Open' && $baStatus['State'] != 'Draft') {
-                    throw new \Exception('The Billing Agreement is in the ' . $baStatus['State'] . " State. It should be in the Draft or Open State");
+                    throw new ClientException('The Billing Agreement is in the ' . $baStatus['State'] . " State. It should be in the Draft or Open State");
                 }
         
                 return $response;
 
             default:
-                throw new \Exception('Invalid Charge Type');
+                throw new ClientException('Invalid Charge Type');
         }
     }
 
@@ -1653,7 +1660,7 @@ private function calculateSignatureAndParametersToString($parameters = array())
             // Ensure that no unexpected type coercions have happened
             if ($key === 'CaptureNow' || $key === 'ConfirmNow' || $key === 'InheritShippingAddress' || $key === 'RequestPaymentAuthorization') {
                 if (!is_bool($value)) {
-                    throw new \Exception($key . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
+                    throw new SignatureException($key . ' value ' . $value . ' is of type ' . gettype($value) . ' and should be a boolean value');
                 }
             }
 
@@ -1721,7 +1728,7 @@ private function signParameters(array $parameters)
             $parameters['SignatureMethod'] = $algorithm;
             $stringToSign                  = $this->calculateStringToSignV2($parameters);
         } else {
-            throw new \Exception("Invalid Signature Version specified");
+            throw new SignatureException("Invalid Signature Version specified");
         }
 
         return $this->sign($stringToSign, $algorithm);
@@ -1775,7 +1782,7 @@ private function sign($data, $algorithm)
         } else if ($algorithm === 'HmacSHA256') {
             $hash = 'sha256';
         } else {
-            throw new \Exception("Non-supported signing method specified");
+            throw new SignatureException("Non-supported signing method specified");
         }
 
         return base64_encode(hash_hmac($hash, $data, $this->config['secret_key'], true));
@@ -1858,7 +1865,7 @@ private function pauseOnRetry($retries, $status)
             $delay = (int) (pow(4, $retries) * 100000) + 600000;
             usleep($delay);
         } else {
-            throw new \Exception('Error Code: '. $status.PHP_EOL.'Maximum number of retry attempts - '. $retries .' reached');
+            throw new ClientException('Error Code: '. $status.PHP_EOL.'Maximum number of retry attempts - '. $retries .' reached');
         }
     }
 
@@ -1881,10 +1888,10 @@ private function createServiceUrl()
                 $this->mwsServiceUrl   = 'https://' . $this->mwsEndpointUrl . '/' . $this->modePath . '/' . self::MWS_VERSION;
                 $this->mwsEndpointPath = '/' . $this->modePath . '/' . self::MWS_VERSION;
             } else {
-                throw new \Exception($region . ' is not a valid region');
+                throw new ClientException($region . ' is not a valid region');
             }
         } else {
-            throw new \Exception("config['region'] is a required parameter and is not set");
+            throw new ClientException("config['region'] is a required parameter and is not set");
         }
     }
 
@@ -1900,10 +1907,10 @@ private function profileEndpointUrl()
             if (array_key_exists($region, $this->regionMappings) ) {
                 $this->profileEndpoint = 'https://' . $profileEnvt . '.' . $this->profileEndpointUrls[$region];
             } else {
-                throw new \Exception($region . ' is not a valid region');
+                throw new ConfigException($region . ' is not a valid region');
             }
         } else {
-            throw new \Exception("config['region'] is a required parameter and is not set");
+            throw new ConfigException("config['region'] is a required parameter and is not set");
         }
     }
 
diff --git a/AmazonPay/Exception/ClientException.php b/AmazonPay/Exception/ClientException.php
new file mode 100644
index 0000000..26f1da2
--- /dev/null
+++ b/AmazonPay/Exception/ClientException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class ClientException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/ConfigException.php b/AmazonPay/Exception/ConfigException.php
new file mode 100644
index 0000000..0a04c0d
--- /dev/null
+++ b/AmazonPay/Exception/ConfigException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class ConfigException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/CurlException.php b/AmazonPay/Exception/CurlException.php
new file mode 100644
index 0000000..73170ca
--- /dev/null
+++ b/AmazonPay/Exception/CurlException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class CurlException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/HttpCurlException.php b/AmazonPay/Exception/HttpCurlException.php
new file mode 100644
index 0000000..cbbdbb4
--- /dev/null
+++ b/AmazonPay/Exception/HttpCurlException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class HttpCurlException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/SignatureException.php b/AmazonPay/Exception/SignatureException.php
new file mode 100644
index 0000000..9eeb62d
--- /dev/null
+++ b/AmazonPay/Exception/SignatureException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class SignatureException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/SnsException.php b/AmazonPay/Exception/SnsException.php
new file mode 100644
index 0000000..f151514
--- /dev/null
+++ b/AmazonPay/Exception/SnsException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+use Exception;
+
+class SnsException extends Exception
+{
+}
diff --git a/AmazonPay/Exception/SnsHeaderException.php b/AmazonPay/Exception/SnsHeaderException.php
new file mode 100644
index 0000000..9a9a5a1
--- /dev/null
+++ b/AmazonPay/Exception/SnsHeaderException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+class SnsHeaderException extends SnsException
+{
+}
diff --git a/AmazonPay/Exception/SnsMessageException.php b/AmazonPay/Exception/SnsMessageException.php
new file mode 100644
index 0000000..fb20ccf
--- /dev/null
+++ b/AmazonPay/Exception/SnsMessageException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+class SnsMessageException extends SnsException
+{
+}
diff --git a/AmazonPay/Exception/SnsSignatureException.php b/AmazonPay/Exception/SnsSignatureException.php
new file mode 100644
index 0000000..f717df5
--- /dev/null
+++ b/AmazonPay/Exception/SnsSignatureException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace AmazonPay\Exception;
+
+class SnsSignatureException extends SnsException
+{
+}
diff --git a/AmazonPay/HttpCurl.php b/AmazonPay/HttpCurl.php
index f8a3220..8f03205 100644
--- a/AmazonPay/HttpCurl.php
+++ b/AmazonPay/HttpCurl.php
@@ -5,6 +5,9 @@
  * Handles Curl POST function for all requests
  */
 
+use AmazonPay\Exception\CurlException;
+use AmazonPay\Exception\HttpCurlException;
+
 require_once 'HttpCurlInterface.php';
 
 class HttpCurl implements HttpCurlInterface
@@ -123,7 +126,7 @@ protected function execute($ch)
         if ($response === false) {
             $error_msg = "Unable to post request, underlying exception of " . curl_error($ch);
             curl_close($ch);
-            throw new \Exception($error_msg);
+            throw new HttpCurlException($error_msg, 0, new CurlException(curl_error($ch), curl_errno($ch)));
         } else {
             $this->curlResponseInfo = curl_getinfo($ch);
         }
diff --git a/AmazonPay/IpnHandler.php b/AmazonPay/IpnHandler.php
index 3b4df8a..fac6579 100644
--- a/AmazonPay/IpnHandler.php
+++ b/AmazonPay/IpnHandler.php
@@ -8,12 +8,21 @@
 
 require_once 'HttpCurl.php';
 require_once 'IpnHandlerInterface.php';
+require_once(__DIR__.'/Exception/ConfigException.php');
+require_once(__DIR__.'/Exception/SnsHeaderException.php');
+require_once(__DIR__.'/Exception/SnsMessageException.php');
+require_once(__DIR__.'/Exception/SnsSignatureException.php');
 if (!interface_exists('\Psr\Log\LoggerAwareInterface')) {
     require_once(__DIR__.'/../Psr/Log/LoggerAwareInterface.php');
 }
 if (!interface_exists('\Psr\Log\LoggerInterface')) {
     require_once(__DIR__.'/../Psr/Log/LoggerInterface.php');
 }
+
+use AmazonPay\Exception\ConfigException;
+use AmazonPay\Exception\SnsHeaderException;
+use AmazonPay\Exception\SnsMessageException;
+use AmazonPay\Exception\SnsSignatureException;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerInterface;
 
@@ -80,7 +89,7 @@ private function checkConfigKeys($ipnConfig)
             if (array_key_exists($key, $this->ipnConfig)) {
                 $this->ipnConfig[$key] = $value;
             } else {
-                throw new \Exception('Key ' . $key . ' is either not part of the configuration or has incorrect Key name.
+                throw new ConfigException('Key ' . $key . ' is either not part of the configuration or has incorrect Key name.
                 check the ipnConfig array key names to match your key names of your config array ', 1);
             }
         }
@@ -107,7 +116,7 @@ public function __set($name, $value)
         if (array_key_exists(strtolower($name), $this->ipnConfig)) {
             $this->ipnConfig[$name] = $value;
         } else {
-            throw new \Exception("Key " . $name . " is not part of the configuration", 1);
+            throw new ConfigException("Key " . $name . " is not part of the configuration", 1);
         }
     }
 
@@ -120,7 +129,7 @@ public function __get($name)
         if (array_key_exists(strtolower($name), $this->ipnConfig)) {
             return $this->ipnConfig[$name];
         } else {
-            throw new \Exception("Key " . $name . " was not found in the configuration", 1);
+            throw new ConfigException("Key " . $name . " was not found in the configuration", 1);
         }
     }
 
@@ -139,11 +148,11 @@ private function validateHeaders()
     {
         // Quickly check that this is a sns message
         if (!array_key_exists('x-amz-sns-message-type', $this->headers)) {
-            throw new \Exception("Error with message - header " . "does not contain x-amz-sns-message-type header");
+            throw new SnsHeaderException("Error with message - header " . "does not contain x-amz-sns-message-type header");
         }
 
         if ($this->headers['x-amz-sns-message-type'] !== 'Notification') {
-            throw new \Exception("Error with message - header x-amz-sns-message-type is not " . "Notification, is " . $this->headers['x-amz-sns-message-type']);
+            throw new SnsHeaderException("Error with message - header x-amz-sns-message-type is not " . "Notification, is " . $this->headers['x-amz-sns-message-type']);
         }
     }
 
@@ -155,7 +164,7 @@ private function getMessage()
 
         if ($json_error != 0) {
             $errorMsg = "Error with message - content is not in json format" . $this->getErrorMessageForJsonError($json_error) . " " . $this->snsMessage;
-            throw new \Exception($errorMsg);
+            throw new SnsMessageException($errorMsg);
         }
     }
 
@@ -198,11 +207,11 @@ private function checkForCorrectMessageType()
     {
         $type = $this->getMandatoryField("Type");
         if (strcasecmp($type, "Notification") != 0) {
-            throw new \Exception("Error with SNS Notification - unexpected message with Type of " . $type);
+            throw new SnsMessageException("Error with SNS Notification - unexpected message with Type of " . $type);
         }
 
         if (strcmp($this->getMandatoryField("Type"), "Notification") != 0) {
-            throw new \Exception("Error with signature verification - unable to verify " . $this->getMandatoryField("Type") . " message");
+            throw new SnsMessageException("Error with signature verification - unable to verify " . $this->getMandatoryField("Type") . " message");
         } else {
 
             // Sort the fields into byte order based on the key name(A-Za-z)
@@ -246,7 +255,7 @@ private function validateUrl($url)
             || substr($url, -4) !== '.pem'
             || !preg_match($this->defaultHostPattern, $parsed['host'])
         ) {
-            throw new \Exception(
+            throw new SnsSignatureException(
                 'The certificate is located on an invalid domain.'
             );
         }
@@ -272,7 +281,7 @@ private function constructAndVerifySignature()
 
         $result = $this->verifySignatureIsCorrectFromCertificate($signature);
         if (!$result) {
-            throw new \Exception("Unable to match signature from remote server: signature of " . $this->getCertificate($certificatePath) . " , SigningCertURL of " . $this->getMandatoryField("SigningCertURL") . " , SignatureOf " . $this->getMandatoryField("Signature"));
+            throw new SnsSignatureException("Unable to match signature from remote server: signature of " . $this->getCertificate($certificatePath) . " , SigningCertURL of " . $this->getMandatoryField("SigningCertURL") . " , SignatureOf " . $this->getMandatoryField("Signature"));
         }
     }
 
@@ -301,7 +310,7 @@ public function verifySignatureIsCorrectFromCertificate($signature)
         $certKey = openssl_get_publickey($this->certificate);
 
         if ($certKey === False) {
-            throw new \Exception("Unable to extract public key from cert");
+            throw new SnsSignatureException("Unable to extract public key from cert");
         }
 
         try {
@@ -309,21 +318,21 @@ public function verifySignatureIsCorrectFromCertificate($signature)
             $certSubject = $certInfo["subject"];
 
             if (is_null($certSubject)) {
-                throw new \Exception("Error with certificate - subject cannot be found");
+                throw new SnsSignatureException("Error with certificate - subject cannot be found");
             }
         } catch (\Exception $ex) {
-            throw new \Exception("Unable to verify certificate - error with the certificate subject", null, $ex);
+            throw new SnsSignatureException("Unable to verify certificate - error with the certificate subject", null, $ex);
         }
 
         if (strcmp($certSubject["CN"], $this->expectedCnName)) {
-            throw new \Exception("Unable to verify certificate issued by Amazon - error with certificate subject");
+            throw new SnsSignatureException("Unable to verify certificate issued by Amazon - error with certificate subject");
         }
 
         $result = -1;
         try {
             $result = openssl_verify($this->signatureFields, $signature, $certKey, OPENSSL_ALGO_SHA1);
         } catch (\Exception $ex) {
-            throw new \Exception("Unable to verify signature - error with the verification algorithm", null, $ex);
+            throw new SnsSignatureException("Unable to verify signature - error with the verification algorithm", null, $ex);
         }
 
         return ($result > 0);
@@ -343,7 +352,7 @@ private function getMandatoryField($fieldName)
     {
         $value = $this->getField($fieldName);
         if (is_null($value)) {
-            throw new \Exception("Error with json message - mandatory field " . $fieldName . " cannot be found");
+            throw new SnsMessageException("Error with json message - mandatory field " . $fieldName . " cannot be found");
         }
         return $value;
     }