import { type LaunchCenterProPhotoAttachment, type LaunchCenterProXCallback } from './shared';
/**
 * Email payload definition.
 */
type Email = LaunchCenterProXCallback & {
    /**
     * Email recipient.
     */
    to?: string;
    /**
     * Email subject.
     */
    subject?: string;
    /**
     * Email body.
     */
    body?: string;
    /**
     * Email CC recipient.
     */
    cc?: string;
    /**
     * Email BCC recipient.
     */
    bcc?: string;
    /**
     * Photo attachment source.
     */
    attach?: LaunchCenterProPhotoAttachment;
};
/**
 * Start a Launch Center Pro email action.
 *
 * @param payload Email payload.
 * @returns Launch Center Pro email URL.
 * @example
 * email({ to: 'sample@contrast.co', subject: 'Last Photo', body: '', cc: '', bcc: '', attach: 'photo:last' })
 * // => 'launch://email?to=sample%40contrast.co&subject=Last%20Photo&body=&cc=&bcc=&attach=photo%3Alast'
 * @link https://help.contrast.co/hc/en-us/articles/200611883-x-callback-url-Support
 */
export declare function email(payload?: Email): string;
export {};