export type Attachment = {
    content: Buffer | string;
    filename: string;
    mimeType: string;
    /** If set and content is string, then encodes the content to a Buffer using the specified encoding */
    encoding?: 'base64';
};
export type Content = {
    subject?: string;
    html: string;
    plain?: string;
    attachments?: Attachment[];
};
export type MailContentOptions = {
    htmlPath: string;
    plain?: string;
    plainPath?: string;
    subject?: string;
    subjectPath?: string;
    attachments?: Attachment[];
};