/**
 * Open email payload definition.
 */
type OpenEmail = {
    /**
     * The RFC compliant email ID.
     *
     * @example '<CABc123xyz@mail.gmail.com>'
     */
    id: string;
};
/**
 * Open an email in the default email client using hook://email/ URL.
 *
 * @param payload Open email payload.
 * @returns Hookmark open email URL.
 * @example
 * openEmail({
 *   id: '<CABc123xyz@mail.gmail.com>',
 * })
 * // => 'hook://email/?id=%3CCABc123xyz@mail.gmail.com%3E'
 * @link https://hookproductivity.com/help/integration/url-scheme-selection-principles
 */
export declare function openEmail(payload: OpenEmail): string;
export {};