diff --git a/app/Maildispatcher/Data/MailEntry.php b/app/Maildispatcher/Data/MailEntry.php
index e54c7a3d..e51807bd 100644
--- a/app/Maildispatcher/Data/MailEntry.php
+++ b/app/Maildispatcher/Data/MailEntry.php
@@ -10,4 +10,9 @@ class MailEntry extends Data
     {
         $this->email = strtolower($email);
     }
+
+    public function is(self $mailEntry): bool
+    {
+        return $this->email === $mailEntry->email;
+    }
 }
diff --git a/app/Mailgateway/Types/Type.php b/app/Mailgateway/Types/Type.php
index cab82bda..d1123215 100644
--- a/app/Mailgateway/Types/Type.php
+++ b/app/Mailgateway/Types/Type.php
@@ -79,8 +79,9 @@ abstract class Type
      */
     public function sync(string $name, string $domain, Collection $results): void
     {
+        $members = $this->list($name, $domain);
         foreach ($results as $result) {
-            if ($this->search($name, $domain, $result->email)) {
+            if ($members->first(fn ($member) => $member->is($result))) {
                 continue;
             }
 
@@ -88,7 +89,7 @@ abstract class Type
         }
 
         $this->list($name, $domain)
-             ->filter(fn ($listEntry) => null === $results->first(fn ($r) => $r->email === $listEntry->email))
+             ->filter(fn ($listEntry) => $results->doesntContain(fn ($r) => $r->is($listEntry)))
              ->each(fn ($listEntry) => $this->remove($name, $domain, $listEntry->email));
     }