diff --git a/db/migrate/20210217154129_remove_orphan_inbox_members_from_inboxes.rb b/db/migrate/20210217154129_remove_orphan_inbox_members_from_inboxes.rb
new file mode 100644
index 000000000..6dbd89ce8
--- /dev/null
+++ b/db/migrate/20210217154129_remove_orphan_inbox_members_from_inboxes.rb
@@ -0,0 +1,13 @@
+class RemoveOrphanInboxMembersFromInboxes < ActiveRecord::Migration[6.0]
+  def change
+    Account.all.map do |account|
+      user_ids = account.users.all.map(&:id)
+      inboxes = account.inboxes
+      inboxes.each do |inbox|
+        inbox.inbox_members.each do |inbox_member|
+          inbox_member.destroy! unless user_ids.include?(inbox_member.user_id)
+        end
+      end
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 8b7476907..a9bf11747 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_02_12_154240) do
+ActiveRecord::Schema.define(version: 2021_02_17_154129) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"