diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..cb7c8b7
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module git.bivouac.wiki/use/mailer
+
+go 1.22.5
diff --git a/kv.go b/kv.go
new file mode 100644
index 0000000..6e69163
--- /dev/null
+++ b/kv.go
@@ -0,0 +1,3 @@
+package mailer
+
+// kv interface (for unsubscribe links)
diff --git a/smtp.go b/smtp.go
new file mode 100644
index 0000000..7fd029f
--- /dev/null
+++ b/smtp.go
@@ -0,0 +1,3 @@
+package mailer
+
+// smtp code