import type { AccountConfig } from "../accounts.js";
import type { SenderAuth } from "../providers/interface.js";
import { strictAddress } from "../providers/headers.js";
export interface TaintInfo {
    sender: string;
    tool: string;
    at: string;
}
/** What a tool knows about one rendered message: its From header and the receiving server's authentication evidence, if any. */
export interface SenderEvidence {
    from: string;
    auth?: SenderAuth;
}
export declare const senderAddress: typeof strictAddress;
export declare function isTainted(account: string): TaintInfo | undefined;
export declare function clearTaint(account?: string): void;
export declare function markTainted(account: string, config: AccountConfig | undefined, tool: string, sender: string): void;
export declare function authservIdFor(config: AccountConfig): string | undefined;
export declare function dmarcPasses(results: string[] | undefined, address: string, authservId: string | undefined): boolean;
export declare function isTrustedSender(config: AccountConfig | undefined, evidence: SenderEvidence): boolean;
export declare function noteSenders(account: string, config: AccountConfig | undefined, tool: string, evidence: SenderEvidence[]): void;