interface FetchBodyParams {
    accountId: string;
    mailbox?: string;
    uid?: number;
    message_id?: string;
    folder?: "inbox" | "sent";
}
/**
 * Retrieve the complete decoded body of one message — no 500-char cap.
 * Addressed by UID (with optional folder) or by Message-ID. The preview
 * tools (email-read/email-search/email-fetch) stay preview-only; this is
 * the path for reading or acting on a message's actual content.
 */
export declare function emailFetchBody(params: FetchBodyParams): Promise<string>;
export {};
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