The file name of the attachment.
def get_attachment_filename(attachment_index: int) -> str: ... def set_attachment_filename(attachment_index: int, value: str) -> None: ...
The file name of the attachment. If incoming_directory has been specified, the attachment will be written to the specified directory and the name will be provided by this property. Otherwise, this will contain the name of the attachment as described in the attachment_headers.
The attachment_index parameter specifies the index of the item in the array. The size of the array is controlled by the attachment_count property.