import { AbstractContent } from './abstract-content';
import { IEmailContent, IFile } from '../../types';
/**
 * Implementation of email content.
 */
export declare class EmailContent extends AbstractContent implements IEmailContent {
    subject: string;
    html?: string;
    text?: string;
    attachments?: IFile[];
    cc?: string[];
    bcc?: string[];
    /**
     * Returns a new `EmailContent` that can be used to send audio, image, video, or document media to your customer.
     *
     * @param subject The subject of the e-mail to be sent.
     * @param html The content to be sent in HTML format.
     * @param text The content to be sent in plain text format.
     * @param attachments Files to be attached in the e-mail.
     */
    constructor(subject: string, attachments?: IFile[], html?: string, text?: string);
}