diff --git a/pkgs/applications/networking/mailreaders/mswatch/default.nix b/pkgs/applications/networking/mailreaders/mswatch/default.nix
new file mode 100644
index 000000000000..41f0ac2fe488
--- /dev/null
+++ b/pkgs/applications/networking/mailreaders/mswatch/default.nix
@@ -0,0 +1,37 @@
+{ lib
+, stdenv
+, fetchzip
+, pkg-config
+, autoreconfHook
+, bison
+, flex
+, glib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "mswatch";
+  # Stable release won't compile successfully
+  version = "unstable-2018-11-21";
+
+  src = fetchzip {
+    url = "https://sourceforge.net/code-snapshots/svn/m/ms/mswatch/code/mswatch-code-r369-trunk.zip";
+    hash = "sha256-czwwhchTizfgVmeknQGLijYgaFSP/45pD2yhDKj5BKw=";
+  };
+  nativeBuildInputs = [
+    pkg-config
+    autoreconfHook
+    bison # For yacc
+    flex
+  ];
+  buildInputs = [
+    glib
+  ];
+
+  meta = with lib; {
+    description = "A command-line Linux utility that efficiently directs mail synchronization between a pair of mailboxes.";
+    homepage = "https://mswatch.sourceforge.net/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ doronbehar ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bef5de9b8de2..9d1d858365a0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -429,6 +429,8 @@ with pkgs;
 
   chatgpt-retrieval-plugin = callPackage ../servers/chatgpt-retrieval-plugin { };
 
+  mswatch = callPackage ../applications/networking/mailreaders/mswatch { };
+
   chef-cli = callPackage ../tools/misc/chef-cli { };
 
   checkov = callPackage ../development/tools/analysis/checkov {