import { IGateway } from '../interfaces';
import { Attachment, Content, SendGridAttachment, SendgridOptions } from '../types';
export declare class SendgridGateway implements IGateway {
    private readonly sendgridOptions;
    private readonly logger;
    constructor(sendgridOptions: SendgridOptions);
    send(to: string, content: Content): Promise<void>;
    prepareAttachments(attachments: Attachment[]): SendGridAttachment[];
}