diff --git a/home/git.nix b/home/git.nix
index db57843..4b11a36 100644
--- a/home/git.nix
+++ b/home/git.nix
@@ -1,7 +1,9 @@
 user:
-{ ... }: {
+{ pkgs, ... }: {
   programs.git = {
     enable = true;
+    /* for git send-email support */
+    package = pkgs.gitAndTools.gitFull;
     userName = user.git.name;
     userEmail = user.git.email;
     delta = {
@@ -20,6 +22,13 @@ user:
       push = {
         default = "simple";
       };
+      sendemail = {
+        smtpserver = "${pkgs.msmtp}/bin/msmtp";
+      };
+    };
+    signing = {
+      key = "1FFE431282F4B8CC0A7579167FB009175885FC76";
+      signByDefault = true;
     };
   };
 }