/**
 * 邮箱适配器
 *
 * 支持 IMAP+SMTP、Exchange Online (Microsoft Graph)、Exchange 自建 (EWS)。
 * 工具通过 executorType(email-*) 路由到 work-client 运行时执行器（见 mcp.service）。
 *
 * 字段读取兼容规范键（emailProtocol / smtp* / imap* / exchange* / ews*）。
 */
import type { DataSourceConfig, DiscoveredTool, ConnectionTestResult, DataSourceAdapter, MCPServerConfig } from '../types.js';
export declare class EmailAdapter implements DataSourceAdapter {
    readonly type: "email";
    readonly label = "\u90AE\u7BB1";
    readonly drivers: string[];
    testConnection(config: DataSourceConfig): Promise<ConnectionTestResult>;
    private testImap;
    private testExchange;
    private testEws;
    discoverTools(_config: DataSourceConfig): Promise<DiscoveredTool[]>;
    generateManifest(config: DataSourceConfig, _tools?: DiscoveredTool[]): Record<string, unknown>;
    generateMCPServerConfigs(_config: DataSourceConfig, _tools?: DiscoveredTool[]): MCPServerConfig[];
}
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