diff --git a/test/Makefile b/test/Makefile
index b8db69d..a6f9c98 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -54,6 +54,10 @@ TESTPROD += mcat
 mcat_SRCS += mcat.cpp
 # not a unittest
 
+TESTPROD += mailbox
+mailbox_SRCS += mailbox.cpp
+# not a unittest
+
 PROD_SYS_LIBS += event_core
 
 PROD_SYS_LIBS_DEFAULT += event_pthreads
diff --git a/test/mailbox.cpp b/test/mailbox.cpp
new file mode 100644
index 0000000..9a05e07
--- /dev/null
+++ b/test/mailbox.cpp
@@ -0,0 +1,62 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvxs is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <iostream>
+
+#include <pvxs/sharedpv.h>
+#include <pvxs/server.h>
+#include <pvxs/nt.h>
+#include <pvxs/log.h>
+
+DEFINE_LOGGER(app, "mailbox");
+
+namespace {
+using namespace pvxs;
+using namespace pvxs::server;
+
+void usage(const char* cmd)
+{
+    std::cerr<<"Usage: "<<cmd<<" <pvname>\n";
+}
+
+} // namespace
+
+int main(int argc, char* argv[])
+{
+    if(argc<=1) {
+        usage(argv[0]);
+        return 1;
+    }
+
+    pvxs::logger_level_set(app.name, pvxs::Level::Info);
+    pvxs::logger_config_env();
+
+    auto initial = nt::NTScalar{TypeCode::Float64}.create();
+    initial["value"] = 42.0;
+
+    auto src(StaticSource::build());
+
+    auto pv(SharedPV::buildMailbox());
+    pv.open(initial);
+
+    src.add(argv[1], pv);
+
+    auto serv = Server::Config::from_env()
+            .build()
+            .addSource("box", src.source());
+
+    auto& conf = serv.config();
+
+    std::cout<<"Serving from :\n";
+    for(auto& iface : conf.interfaces) {
+        std::cout<<"  "<<iface<<"\n";
+    }
+
+    log_printf(app, Info, "Running\n%s", "");
+    serv.run();
+
+    return 0;
+}