import { Attachment } from 'nodemailer/lib/mailer';
export declare abstract class BaseMail {
    private details;
    private attachments;
    abstract get subject(): string;
    abstract get to(): string | string[];
    get from(): string;
    get cc(): string | string[];
    abstract get template(): string;
    data(): Record<string, any>;
    get options(): {};
    listAttachments(): Attachment[];
    addAttachment(attachment: Attachment): this;
    get content(): string;
    set content(newContent: string);
}