diff --git a/modules/services/imapnotify.nix b/modules/services/imapnotify.nix
index a79cba35e..63e61e7c7 100644
--- a/modules/services/imapnotify.nix
+++ b/modules/services/imapnotify.nix
@@ -72,6 +72,7 @@ let
       inherit (account.imap) host;
       inherit port;
       tls = account.imap.tls.enable;
+      tlsOptions.starttls = account.imap.tls.useStartTls;
       username = account.userName;
       passwordCmd =
         lib.concatMapStringsSep " " lib.escapeShellArg account.passwordCommand;
diff --git a/tests/modules/services/imapnotify/imapnotify-config.json b/tests/modules/services/imapnotify/imapnotify-config.json
new file mode 100644
index 000000000..21276857d
--- /dev/null
+++ b/tests/modules/services/imapnotify/imapnotify-config.json
@@ -0,0 +1 @@
+{"boxes":["Inbox"],"host":"imap.example.com","onNewMail":"@notmuch@/bin/notmuch new\n","passwordCmd":"'password-command'","port":993,"tls":true,"tlsOptions":{"starttls":false},"username":"home.manager"}
\ No newline at end of file
diff --git a/tests/modules/services/imapnotify/imapnotify.nix b/tests/modules/services/imapnotify/imapnotify.nix
index c607c042c..5a9e2b003 100644
--- a/tests/modules/services/imapnotify/imapnotify.nix
+++ b/tests/modules/services/imapnotify/imapnotify.nix
@@ -35,5 +35,10 @@ with lib;
     serviceFileNormalized="$(normalizeStorePaths "$serviceFile")"
     assertFileExists $serviceFile
     assertFileContent $serviceFileNormalized ${./imapnotify.service}
+
+    configFile="home-files/.config/imapnotify/imapnotify-hm-example.com-config.json"
+    configFileNormalized="$(normalizeStorePaths "$configFile")"
+    assertFileExists $configFile
+    assertFileContent $configFileNormalized ${./imapnotify-config.json}
   '';
 }