import type { PayloadEmailAdapter } from 'payload';
export type GraphAdapterArgs = {
    fallbackFromAddress?: string;
    fallbackFromName?: string;
};
/**
 * Payload email adapter that sends through Microsoft Graph (our Exchange),
 * using app-only client-credentials auth. Drop-in alternative to
 * panelSmtpAdapter — same PayloadEmailAdapter contract, so payload.sendEmail
 * and the form-builder's submission emails work unchanged.
 *
 * Split of configuration (deliberate):
 * - Graph credentials (tenant/client/secret/sender) = AGENCY secrets, from env.
 *   The client never sees or sets them — it's our Exchange, one mailbox
 *   (GRAPH_SENDER, e.g. forms@intecion.pl) for every project.
 * - From-display + recipient = per-project, from the panel (SiteIntegrations),
 *   so an editor controls how the mail is labelled and where it lands.
 *
 * Wiring: email: process.env.GRAPH_CLIENT_ID ? graphAdapter() : panelSmtpAdapter()
 *
 * Azure setup (one-time, our side): App registration → Mail.Send APPLICATION
 * permission → admin consent → in Exchange, grant the app "Send As" on the
 * shared mailbox GRAPH_SENDER.
 */
export declare const graphAdapter: (args?: GraphAdapterArgs) => PayloadEmailAdapter;