/**
 * Terminal presenters for the email CLI. Pure string builders (no I/O) so they
 * are unit-testable and so the command layer stays thin. Colour is opt-in and
 * off by default for non-TTY output (pipes, tests); the command layer passes
 * `color: process.stdout.isTTY && !process.env.NO_COLOR`.
 */
import type { Email, EmailMeta, Mailbox, PaginatedResult } from '../types/index.js';
interface Opts {
    color: boolean;
}
export declare function formatSize(bytes: number): string;
/** A one-line-per-message listing with flag glyphs, aligned columns. */
export declare function formatEmailList(result: PaginatedResult<EmailMeta>, mailbox: string, opts: Opts): string;
/** A full message: headers, body (text preferred, HTML stripped otherwise), attachments. */
export declare function formatEmailFull(email: Email, opts: Opts): string;
/** Mailbox listing with unread/total counts when the server reported them. */
export declare function formatMailboxes(boxes: Mailbox[], opts: Opts): string;
export {};
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