diff --git a/app/builders/messages/facebook/message_builder.rb b/app/builders/messages/facebook/message_builder.rb
index 24b6d9e70..c7608399e 100644
--- a/app/builders/messages/facebook/message_builder.rb
+++ b/app/builders/messages/facebook/message_builder.rb
@@ -91,15 +91,17 @@ class Messages::Facebook::MessageBuilder < Messages::Messenger::MessageBuilder
 
   def fallback_params(attachment)
     {
-      fallback_title: attachment['title'],
+      fallback_title: attachment['title'] || attachment.dig('payload', 'title'),
       external_url: attachment['url'] || attachment.dig('payload', 'url')
     }
   end
 
   # Facebook shared posts point to page URLs, not downloadable media URLs.
+  # Both `share` and `post` attachment types carry a page URL rather than a media file,
+  # so map them to `fallback` (which keeps the title/link without attempting a download).
   # Keep this Facebook-only so Messenger/Instagram share attachments still use the parent media handling.
   def normalize_file_type(type)
-    return :fallback if type.to_sym == :share
+    return :fallback if [:share, :post].include?(type.to_sym)
 
     super
   end
diff --git a/spec/builders/messages/facebook/message_builder_spec.rb b/spec/builders/messages/facebook/message_builder_spec.rb
index 7718d23eb..0468c2c09 100644
--- a/spec/builders/messages/facebook/message_builder_spec.rb
+++ b/spec/builders/messages/facebook/message_builder_spec.rb
@@ -212,6 +212,12 @@ describe Messages::Facebook::MessageBuilder do
         attachment: { type: 'share', title: 'Shared Facebook post', payload: { url: 'https://www.facebook.com/example/posts/123' } },
         title: 'Shared Facebook post',
         url: 'https://www.facebook.com/example/posts/123'
+      },
+      {
+        source_id: 'm_post_test',
+        attachment: { type: 'post', payload: { title: 'Shared post caption', url: 'https://www.facebook.com/example/posts/456' } },
+        title: 'Shared post caption',
+        url: 'https://www.facebook.com/example/posts/456'
       }
     ].each do |message_data|
       it "stores #{message_data[:attachment][:type]} attachments as fallback links" do