| Name | Type | Description | Notes |
|---|---|---|---|
| file | String | The file to be attached. Must be multipart/form-data. The maximum file size is 4 MB. Files with the following extensions are supported: .pdf, .csv, .png, .xlsx, .xls, .doc, .docx, .msg, .jpg, .txt, .htm, .html, .eml, .pptx, .gif, .rtf, .xml, .jpeg, .log, .cls |