# UploadAttachmentOptions ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **contentId** | **String** | Optional contentId for file. | [optional] **contentType** | **String** | Optional contentType for file. For instance `application/pdf` | [optional] **filename** | **String** | Optional filename to save upload with. Will be the name that is shown in email clients | [optional] **base64Contents** | **String** | Base64 encoded string of file contents. Typically this means reading the bytes or string content of a file and then converting that to a base64 encoded string. For examples of how to do this see https://www.mailslurp.com/guides/base64-file-uploads/ | [[Back to Model list]](../README#documentation-for-models) [[Back to API list]](../README#documentation-for-api-endpoints) [[Back to README]](../README)