diff --git a/modules/common/mailcow.nix b/modules/common/mailcow.nix
new file mode 100644
index 0000000..681573f
--- /dev/null
+++ b/modules/common/mailcow.nix
@@ -0,0 +1,26 @@
+{ config, lib, pkgs, ... }: let
+  mailDomains = [
+    "clicks.codes"
+    "coded.codes"
+    "hopescaramels.com"
+    "trans.gg"
+  ];
+  mailACMEHosts = [
+    "mail.clicks.codes"
+    "mail.coded.codes"
+    "mail.trans.gg"
+    "mail.hopescaramels.com"
+  ] ++ (
+    builtins.concatMap
+      (domain: [ domain "mail.${domain}" "imap.${domain}" "smtp.${domain}" ])
+      mailDomains
+  );
+in {
+  security.acme = {
+    certs = lib.pipe mailACMEHosts [
+      (map (name: { inherit name; value = {}; }))
+      builtins.listToAttrs
+    ];
+    defaults.postRun = "cp -r $(pwd) /opt/mailcow-dockerized/data/assets/ssl/";
+  };
+}