diff --git a/pkgs/development/ocaml-modules/colombe/default.nix b/pkgs/development/ocaml-modules/colombe/default.nix
new file mode 100644
index 000000000000..d0ed2b870e54
--- /dev/null
+++ b/pkgs/development/ocaml-modules/colombe/default.nix
@@ -0,0 +1,41 @@
+{
+  alcotest,
+  angstrom,
+  buildDunePackage,
+  crowbar,
+  emile,
+  fetchurl,
+  fmt,
+  ipaddr,
+  lib,
+}:
+
+let
+  pname = "colombe";
+  version = "0.12.0";
+in
+buildDunePackage {
+  inherit pname version;
+  minimalOCamlVersion = "4.03";
+  src = fetchurl {
+    url = "https://github.com/mirage/colombe/releases/download/v${version}/colombe-${version}.tbz";
+    hash = "sha256-9g9l0wTzlXtESNeoBxhjMxlX0bRFY19T2+PN1lZ7ojE=";
+  };
+  propagatedBuildInputs = [
+    angstrom
+    emile
+    fmt
+    ipaddr
+  ];
+  doCheck = true;
+  checkInputs = [
+    alcotest
+    crowbar
+  ];
+  meta = {
+    description = "SMTP protocol according to RFC5321 without extensions";
+    homepage = "https://github.com/mirage/colombe";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.vog ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index e7b4290548a8..293b6d6a16dc 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -262,6 +262,8 @@ let
 
         coin = callPackage ../development/ocaml-modules/coin { };
 
+        colombe = callPackage ../development/ocaml-modules/colombe { };
+
         color = callPackage ../development/ocaml-modules/color { };
 
         colors = callPackage ../development/ocaml-modules/colors { };