import type { PayloadEmailAdapter } from 'payload';
import { type GraphAdapterArgs } from './graphAdapter.js';
import { type PanelSmtpAdapterArgs } from './panelSmtpAdapter.js';
export type MailAdapterArgs = {
    fallbackFromAddress?: string;
    fallbackFromName?: string;
    graph?: GraphAdapterArgs;
    smtp?: PanelSmtpAdapterArgs;
};
/**
 * Dispatcher email adapter: wired into the config ONCE, but picks the transport
 * (SMTP or Graph) per send by reading `emailTransport` from SiteIntegrations.
 * This is what makes the choice switchable in the panel — Payload builds the
 * email adapter at boot and can't swap it at runtime, so instead of choosing
 * between two adapters at boot we install one that delegates on every send.
 *
 * Availability guard: Graph only runs if its agency credentials exist in env
 * (this is *our* Exchange). If the panel says 'graph' but env isn't set up,
 * we DON'T silently fail — we log clearly and fall back to SMTP, so a client
 * flipping the switch without the backing config still gets mail out (over SMTP)
 * rather than silent nothing. If neither is usable, the send reports an error.
 *
 * @example
 * // payload.config.ts
 * import { mailAdapter } from '@intecion/ipal-kit'
 * email: mailAdapter()
 */
export declare const mailAdapter: (args?: MailAdapterArgs) => PayloadEmailAdapter;