diff --git a/app/src/main/java/eu/faircode/email/DnsBlockList.java b/app/src/main/java/eu/faircode/email/DnsBlockList.java
index bdb240f000..588e9f29cd 100644
--- a/app/src/main/java/eu/faircode/email/DnsBlockList.java
+++ b/app/src/main/java/eu/faircode/email/DnsBlockList.java
@@ -162,6 +162,10 @@ public class DnsBlockList {
         return (hasDomain ? false : null);
     }
 
+    static Boolean isJunk(Context context, String domain) {
+        return isJunk(context, domain, false, BLOCK_LISTS);
+    }
+
     private static boolean isJunk(Context context, String host, boolean numeric, List<BlockList> blocklists) {
         synchronized (cache) {
             CacheEntry entry = cache.get(host);
diff --git a/app/src/main/java/eu/faircode/email/FragmentDialogOpenLink.java b/app/src/main/java/eu/faircode/email/FragmentDialogOpenLink.java
index 73e240e225..33af42aa2b 100644
--- a/app/src/main/java/eu/faircode/email/FragmentDialogOpenLink.java
+++ b/app/src/main/java/eu/faircode/email/FragmentDialogOpenLink.java
@@ -403,6 +403,31 @@ public class FragmentDialogOpenLink extends FragmentDialogBase {
             tvSuspicious.setVisibility(Helper.isSingleScript(host) ? View.GONE : View.VISIBLE);
         }
 
+        if (BuildConfig.DEBUG &&
+                tvSuspicious.getVisibility() != View.VISIBLE) {
+            Bundle args = new Bundle();
+            args.putString("host", host);
+
+            new SimpleTask<Boolean>() {
+                @Override
+                protected Boolean onExecute(Context context, Bundle args) throws Throwable {
+                    String host = args.getString("host");
+                    return DnsBlockList.isJunk(context, host);
+                }
+
+                @Override
+                protected void onExecuted(Bundle args, Boolean blocklist) {
+                    if (blocklist != null && blocklist)
+                        tvSuspicious.setVisibility(View.VISIBLE);
+                }
+
+                @Override
+                protected void onException(Bundle args, Throwable ex) {
+                    // Ignored
+                }
+            }.execute(this, args, "link:blocklist");
+        }
+
         grpDifferent.setVisibility(
                 host == null || thost == null || host.equalsIgnoreCase(thost)
                         ? View.GONE : View.VISIBLE);