export interface RelayRecord {
  names: Set<string>;
  replyTos: Set<string>;
}

export declare const explicitSends: Map<string, RelayRecord>;

export function addrName(addr: string): string;
export function noteExplicitSend(sessionID: string | undefined, to: string, replyTo: string): void;
export function shouldSkipAutoRelay(
  sent: RelayRecord | undefined,
  replyTo: string,
  mailID?: string
): boolean;