diff --git a/nixos/modules/services/monitoring/smartd.nix b/nixos/modules/services/monitoring/smartd.nix
index c345ec48a018..8388527a268d 100644
--- a/nixos/modules/services/monitoring/smartd.nix
+++ b/nixos/modules/services/monitoring/smartd.nix
@@ -18,7 +18,7 @@ let
     ${optionalString nm.enable ''
       {
       ${pkgs.coreutils}/bin/cat << EOF
-      From: smartd on ${host} <root>
+      From: smartd on ${host} <${nm.sender}>
       To: undisclosed-recipients:;
       Subject: SMART error on $SMARTD_DEVICESTRING: $SMARTD_FAILTYPE
 
@@ -129,6 +129,16 @@ in
             description = "Whenever to send e-mail notifications.";
           };
 
+          sender = mkOption {
+            default = "root";
+            example = "example@domain.tld";
+            type = types.str;
+            description = ''
+              Sender of the notification messages.
+              Acts as the value of <literal>email</email> in the emails' <literal>From: ... <email></literal> field.
+            '';
+          };
+
           recipient = mkOption {
             default = "root";
             type = types.str;