> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.aiconnected.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Attachments

> Attach files and documents to outbound messages sent by Personas.

Personas can attach files to outbound emails and messages. Attachments are passed as base64-encoded content or as a signed URL from your connected storage provider.

## Example

```json theme={null}
{
  "to": "client@example.com",
  "subject": "Your contract is ready",
  "attachments": [
    {
      "filename": "contract.pdf",
      "content": "<base64-encoded-content>",
      "type": "application/pdf"
    }
  ]
}
```

<Info>
  Maximum attachment size is 25MB per message. For larger files, use a signed URL instead.
</Info>