diff --git a/Cargo.toml b/Cargo.toml
index c2e7d95c..2f66bc18 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ default = [
   "imap",
   #"maildir",
   #"notmuch",
-  "smtp",
+  #"smtp",
   #"sendmail",
   #"keyring",
   #"oauth2",