MailAttachmentGet

Summary

• Retrieves a specific attachment. File attachments include content as Base64.

Graph Endpoint

• GET /me/messages/{messageId}/attachments/{attachmentId}

Parameters

Required

• messageId: string

• attachmentId: string

Usage (app.businessFunction)

app.businessFunction({
  functionName: 'MicrosoftGraph',
  methodName: 'Mail',
  operation: 'AttachmentGet',
  parameters: {
    messageId: 'AAMkAGI2N...',
    attachmentId: 'AQQkADk2...'
  }
})

Response

{
  "attachment": {
    "id": "AQQkADk2...",
    "name": "report.pdf",
    "contentType": "application/pdf",
    "size": 123456,
    "contentBytesBase64": "JVBERi0xLjQKJc..." 
  }
}

Notes

• Non‑file attachments (e.g., item references) may not include contentBytesBase64.