diff --git a/django_mailbox/models.py b/django_mailbox/models.py
index 0f0ac9d..55ed6f0 100644
--- a/django_mailbox/models.py
+++ b/django_mailbox/models.py
@@ -32,6 +32,7 @@ from django_mailbox.signals import message_received
 from django_mailbox.transports import Pop3Transport, ImapTransport, \
     MaildirTransport, MboxTransport, BabylTransport, MHTransport, \
     MMDFTransport, GmailImapTransport
+from django_mailbox.transports.registry import registry
 
 logger = logging.getLogger(__name__)
 
@@ -233,6 +234,8 @@ class Mailbox(models.Model):
             conn = MHTransport(self.location)
         elif self.type == 'mmdf':
             conn = MMDFTransport(self.location)
+        else:
+            conn = registry[self.type].from_url(self.uri)
         return conn
 
     def process_incoming_message(self, message):
diff --git a/django_mailbox/transports/__init__.py b/django_mailbox/transports/__init__.py
index 7aeef95..b995258 100644
--- a/django_mailbox/transports/__init__.py
+++ b/django_mailbox/transports/__init__.py
@@ -8,3 +8,4 @@ from django_mailbox.transports.babyl import BabylTransport
 from django_mailbox.transports.mh import MHTransport
 from django_mailbox.transports.mmdf import MMDFTransport
 from django_mailbox.transports.gmail import GmailImapTransport
+from django_mailbox.transports.registry import registry, register
diff --git a/django_mailbox/transports/base.py b/django_mailbox/transports/base.py
index a90af9f..38fdebd 100644
--- a/django_mailbox/transports/base.py
+++ b/django_mailbox/transports/base.py
@@ -9,3 +9,10 @@ class EmailTransport:
         message = email.message_from_bytes(contents)
 
         return message
+
+
+class PluggableEmailTransport(EmailTransport):
+    @classmethod
+    def from_uri(cls, uri):
+        raise NotImplemented("The class does not implement {0}.from_uri, and it should. "
+                             "Overwrite {0}.from_uri.".format(cls.__name__))
diff --git a/django_mailbox/transports/registry.py b/django_mailbox/transports/registry.py
new file mode 100644
index 0000000..4ed847e
--- /dev/null
+++ b/django_mailbox/transports/registry.py
@@ -0,0 +1,8 @@
+registry = {}
+
+
+def register(transport_type):
+    def decorator(f):
+        registry[transport_type] = f
+        return f
+    return decorator