diff --git a/README.rst b/README.rst
index 3dec40c..54f6dc0 100644
--- a/README.rst
+++ b/README.rst
@@ -281,7 +281,11 @@ The full set of configuration options are:
     - ``message`` - str: The email message (Default: Please see the attached parsedmarc report.)
 - ``s3``
     - ``bucket`` - str: The S3 bucket name
-    - ``path`` - int: The path to upload reports to (Default: /)
+    - ``path`` - str: The path to upload reports to (Default: /)
+    - ``region_name`` - str: The region name (Optional)
+    - ``endpoint_url`` - str: The endpoint URL (Optional)
+    - ``access_key_id`` - str: The access key id (Optional)
+    - ``secret_access_key`` - str: The secret access key (Optional)
 - ``syslog``
     - ``server`` - str: The Syslog server name or IP address
     - ``port`` - int: The UDP port to use (Default: 514)
diff --git a/docs/index.rst b/docs/index.rst
index 9561982..91a6ddc 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -280,7 +280,11 @@ The full set of configuration options are:
 
 - ``s3``
     - ``bucket`` - str: The S3 bucket name
-    - ``path`` - int: The path to upload reports to (Default: /)
+    - ``path`` - str: The path to upload reports to (Default: /)
+    - ``region_name`` - str: The region name (Optional)
+    - ``endpoint_url`` - str: The endpoint URL (Optional)
+    - ``access_key_id`` - str: The access key id (Optional)
+    - ``secret_access_key`` - str: The secret access key (Optional)
 - ``syslog``
     - ``server`` - str: The Syslog server name or IP address
     - ``port`` - int: The UDP port to use (Default: 514)
diff --git a/parsedmarc/cli.py b/parsedmarc/cli.py
index d012d2b..a57d4d7 100644
--- a/parsedmarc/cli.py
+++ b/parsedmarc/cli.py
@@ -92,6 +92,10 @@ def _main():
                 s3_client = s3.S3Client(
                     bucket_name=opts.s3_bucket,
                     bucket_path=opts.s3_path,
+                    region_name=opts.s3_region_name,
+                    endpoint_url=opts.s3_endpoint_url,
+                    access_key_id=opts.s3_access_key_id,
+                    secret_access_key=opts.s3_secret_access_key,
                 )
             except Exception as error_:
                 logger.error("S3 Error: {0}".format(error_.__str__()))
@@ -314,6 +318,10 @@ def _main():
                      smtp_message="Please see the attached DMARC results.",
                      s3_bucket=None,
                      s3_path=None,
+                     s3_region_name=None,
+                     s3_endpoint_url=None,
+                     s3_access_key_id=None,
+                     s3_secret_access_key=None,
                      syslog_server=None,
                      syslog_port=None,
                      gmail_api_credentials_file=None,
@@ -681,6 +689,16 @@ def _main():
                     opts.s3_path = opts.s3_path[:-1]
             else:
                 opts.s3_path = ""
+
+            if "region_name" in s3_config:
+                opts.s3_region_name = s3_config["region_name"]
+            if "endpoint_url" in s3_config:
+                opts.s3_endpoint_url = s3_config["endpoint_url"]
+            if "access_key_id" in s3_config:
+                opts.s3_access_key_id = s3_config["access_key_id"]
+            if "secret_access_key" in s3_config:
+                opts.s3_secret_access_key = s3_config["secret_access_key"]
+
         if "syslog" in config.sections():
             syslog_config = config["syslog"]
             if "server" in syslog_config:
diff --git a/parsedmarc/s3.py b/parsedmarc/s3.py
index 41910ed..dd5b644 100644
--- a/parsedmarc/s3.py
+++ b/parsedmarc/s3.py
@@ -12,12 +12,16 @@ logger = logging.getLogger("parsedmarc")
 class S3Client(object):
     """A client for a Amazon S3"""
 
-    def __init__(self, bucket_name, bucket_path):
+    def __init__(self, bucket_name, bucket_path, region_name, endpoint_url, access_key_id, secret_access_key):
         """
         Initializes the S3Client
         Args:
             bucket_name (str): The S3 Bucket
             bucket_path (str): The path to save reports
+            region_name (str): The region name
+            endpoint_url (str): The endpoint URL
+            access_key_id (str): The access key id
+            secret_access_key (str): The secret access key
         """
         self.bucket_name = bucket_name
         self.bucket_path = bucket_path
@@ -29,7 +33,14 @@ class S3Client(object):
             "end_date",
         ]
 
-        self.s3 = boto3.resource('s3')
+        # https://github.com/boto/boto3/blob/1.24.7/boto3/session.py#L312
+        self.s3 = boto3.resource(
+            's3',
+            region_name=region_name,
+            endpoint_url=endpoint_url,
+            aws_access_key_id=access_key_id,
+            aws_secret_access_key=secret_access_key,
+        )
         self.bucket = self.s3.Bucket(self.bucket_name)
 
     def save_aggregate_report_to_s3(self, report):