# Attachments

### How HubSpot Attachments Work

Attachments are always associated with an Engagement object, such as a call, note, or similar interaction. They can be linked to both Standard and Custom objects in HubSpot.

<figure><img src="https://2867423571-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfJjIdV9cuW6K8asJjTPJ%2Fuploads%2FnmyyQG9ju2qJ2g0bO0jA%2FScreen%20Shot%202024-10-14%20at%203.52.48%20PM.png?alt=media&#x26;token=a82cf086-9637-4c3f-8dfb-2a6fadb2aa92" alt=""><figcaption></figcaption></figure>

Syncing Attachments in Stacksync:

* At least one Engagement object needs to be synced along with the Attachments object. For example, to sync all attachments linked specifically to Calls, you must sync both *Calls* and *Attachments*.
* To sync all attachments regardless of the engagement object they are associated with, you need to sync *all objects*. However, syncing all objects is not recommended unless it is necessary, as this can result in syncing unnecessary data.