/**
 * Lob
 * The Lob API is organized around REST. Our API is designed to have predictable, resource-oriented URLs and uses HTTP response codes to indicate any API errors. <p> Looking for our [previous documentation](https://lob.github.io/legacy-docs/)?
 *
 * The version of the OpenAPI document: 1.3.0
 * Contact: lob-openapi@lob.com
 *
 * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
 * https://openapi-generator.tech
 * Do not edit the class manually.
 */
import { MailType } from "./mail-type";
/**
 * Properties that the letters in your Creative should have.
 * @export
 * @class LetterDetailsWritable
 */
export declare class LetterDetailsWritable {
    constructor(input?: any);
    /**
     * Specifies the location of the address information that will show through the double-window envelope.
     * @type {string}
     * @memberof LetterDetailsWritable
     */
    "address_placement"?: LetterDetailsWritableAddressPlacementEnum;
    /**
     * A single-element array containing an existing card id in a string format. See [cards](#tag/Cards) for more information.
     * @type {Array<string>}
     * @memberof LetterDetailsWritable
     */
    "cards": Array<string> | null;
    /**
     * Set this key to `true` if you would like to print in color. Set to `false` if you would like to print in black and white.
     * @type {boolean}
     * @memberof LetterDetailsWritable
     */
    "color": boolean;
    /**
     * Set this attribute to `true` for double sided printing, or `false` for for single sided printing. Defaults to `true`.
     * @type {boolean}
     * @memberof LetterDetailsWritable
     */
    "double_sided"?: boolean;
    /**
     * Add an extra service to your letter.
     * @type {string}
     * @memberof LetterDetailsWritable
     */
    "extra_service"?: string;
    /**
     *
     * @type {MailType}
     * @memberof LetterDetailsWritable
     */
    "mail_type"?: MailType;
    /**
     *
     * @type {boolean}
     * @memberof LetterDetailsWritable
     */
    "return_envelope"?: boolean;
    /**
     * Accepts an envelope ID for any customized envelope with available inventory.
     * @type {string}
     * @memberof LetterDetailsWritable
     */
    private "_custom_envelope"?;
    get custom_envelope(): string | null;
    set custom_envelope(newValue: string | null);
    toJSON(): {};
}
/**
 * @export
 * @enum {string}
 */
export declare enum LetterDetailsWritableAddressPlacementEnum {
    TopFirstPage = "top_first_page",
    InsertBlankPage = "insert_blank_page",
    BottomFirstPageCenter = "bottom_first_page_center",
    BottomFirstPage = "bottom_first_page"
}
/**
 * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
 * https://openapi-generator.tech
 * Do not edit the class manually.
 */