diff --git a/pkgs/development/python-modules/flask-mailman/default.nix b/pkgs/development/python-modules/flask-mailman/default.nix
new file mode 100644
index 0000000000000..aa8ffae24370a
--- /dev/null
+++ b/pkgs/development/python-modules/flask-mailman/default.nix
@@ -0,0 +1,46 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, poetry-core
+, mkdocs-material-extensions
+, flask
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "flask-mailman";
+  version = "0.3.0";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "waynerv";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-cfLtif+48M6fqOkBbi4PJRFpf9FRXCPesktFQky34eU=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  propagatedBuildInputs = [
+    flask
+    mkdocs-material-extensions
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "flask_mailman" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/waynerv/flask-mailman";
+    description = "Flask extension providing simple email sending capabilities.";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ gador ];
+  };
+}
diff --git a/pkgs/development/python-modules/flask-security-too/default.nix b/pkgs/development/python-modules/flask-security-too/default.nix
index e2094568b6581..4c1b46fc86bb1 100644
--- a/pkgs/development/python-modules/flask-security-too/default.nix
+++ b/pkgs/development/python-modules/flask-security-too/default.nix
@@ -9,7 +9,8 @@
 # extras: common
 , bcrypt
 , bleach
-, flask_mail
+, flask-mailman
+, qrcode
 
 # extras: fsqla
 , flask-sqlalchemy
@@ -19,7 +20,6 @@
 # extras: mfa
 , cryptography
 , phonenumbers
-, pyqrcode
 
 # propagates
 , blinker
@@ -39,6 +39,7 @@
 , peewee
 , pony
 , pytestCheckHook
+, python-dateutil
 , zxcvbn
 }:
 
@@ -71,7 +72,8 @@ buildPythonPackage rec {
     common = [
       bcrypt
       bleach
-      flask_mail
+      flask-mailman
+      qrcode
     ];
     fsqla = [
       flask-sqlalchemy
@@ -81,7 +83,6 @@ buildPythonPackage rec {
     mfa = [
       cryptography
       phonenumbers
-      pyqrcode
     ];
   };
 
@@ -93,6 +94,7 @@ buildPythonPackage rec {
     peewee
     pony
     pytestCheckHook
+    python-dateutil
     zxcvbn
   ]
   ++ passthru.optional-dependencies.babel
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c25db1beea00d..8f93db3af9e7a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3360,6 +3360,8 @@ in {
 
   flask_mail = callPackage ../development/python-modules/flask-mail { };
 
+  flask-mailman = callPackage ../development/python-modules/flask-mailman { };
+
   flask_marshmallow = callPackage ../development/python-modules/flask-marshmallow { };
 
   flask_migrate = callPackage ../development/python-modules/flask-migrate { };