diff --git a/app/src/main/java/eu/faircode/email/ContactInfo.java b/app/src/main/java/eu/faircode/email/ContactInfo.java
index 1080dcd361..4f1ef9339f 100644
--- a/app/src/main/java/eu/faircode/email/ContactInfo.java
+++ b/app/src/main/java/eu/faircode/email/ContactInfo.java
@@ -873,22 +873,35 @@ public class ContactInfo {
         }
     }
 
+    static Uri getLookupUri(List<Address> addresses) {
+        return getLookupUri(addresses.toArray(new Address[0]));
+    }
+
     static Uri getLookupUri(Address[] addresses) {
         if (addresses == null)
             return null;
 
         for (Address from : addresses) {
             String email = ((InternetAddress) from).getAddress();
-            if (!TextUtils.isEmpty(email)) {
-                Lookup lookup = emailLookup.get(email.toLowerCase(Locale.ROOT));
-                if (lookup != null)
-                    return lookup.uri;
-            }
+            if (TextUtils.isEmpty(email))
+                continue;
+
+            Lookup lookup = emailLookup.get(email.toLowerCase(Locale.ROOT));
+            if (lookup != null)
+                return lookup.uri;
         }
 
         return null;
     }
 
+    static Uri getLookupUri(String email) {
+        if (TextUtils.isEmpty(email))
+            return null;
+
+        Lookup lookup = emailLookup.get(email.toLowerCase(Locale.ROOT));
+        return (lookup == null ? null : lookup.uri);
+    }
+
     static Address[] fillIn(Address[] addresses, boolean prefer_contact, boolean only_contact) {
         if (addresses == null)
             return null;
diff --git a/app/src/main/java/eu/faircode/email/DnsBlockList.java b/app/src/main/java/eu/faircode/email/DnsBlockList.java
index 6da9ddcc2d..03430ae105 100644
--- a/app/src/main/java/eu/faircode/email/DnsBlockList.java
+++ b/app/src/main/java/eu/faircode/email/DnsBlockList.java
@@ -155,6 +155,9 @@ public class DnsBlockList {
     }
 
     static Boolean isJunk(Context context, List<Address> addresses) {
+        if (ContactInfo.getLookupUri(addresses) != null)
+            return false;
+
         boolean hasDomain = false;
         for (Address address : addresses) {
             String email = ((InternetAddress) address).getAddress();
@@ -165,6 +168,7 @@ public class DnsBlockList {
             if (isJunk(context, domain, false, BLOCK_LISTS))
                 return true;
         }
+
         return (hasDomain ? false : null);
     }
 
@@ -172,6 +176,14 @@ public class DnsBlockList {
         String domain = null;
         if ("mailto".equalsIgnoreCase(uri.getScheme())) {
             MailTo email = MailTo.parse(uri.toString());
+
+            String to = email.getTo();
+            if (TextUtils.isEmpty(to))
+                return null;
+
+            if (ContactInfo.getLookupUri(to) != null)
+                return false;
+
             domain = UriHelper.getEmailDomain(email.getTo());
         } else
             domain = uri.getHost();