export interface ImapConfig {
    host: string;
    port: number;
    user: string;
    password: string;
}
export interface ImapEnvelope {
    uid: number;
    seq: number;
    from: string;
    to: string;
    subject: string;
    date: string;
    flags: string[];
    size: number;
    messageId: string;
}
export interface ImapFolder {
    name: string;
    delimiter: string;
    flags: string[];
}
export declare class ImapClient {
    private config;
    private socket;
    private tagCounter;
    private buffer;
    private responseResolve;
    private pendingLines;
    private pendingTag;
    private connected;
    constructor(config: ImapConfig);
    private nextTag;
    connect(): Promise<void>;
    private processBuffer;
    private commandTimeout;
    private sendCommand;
    login(): Promise<void>;
    listFolders(): Promise<ImapFolder[]>;
    selectFolder(folder: string): Promise<{
        exists: number;
        recent: number;
    }>;
    fetchEnvelopes(start: number, count: number): Promise<ImapEnvelope[]>;
    fetchEnvelopesByUid(uids: number[]): Promise<ImapEnvelope[]>;
    private parseEnvelopes;
    private parseEnvelopeParts;
    private extractAddress;
    fetchBody(uid: number): Promise<string>;
    search(criteria: string): Promise<number[]>;
    setFlags(uid: number, flags: string, mode?: '+' | '-'): Promise<void>;
    deleteMessage(uid: number): Promise<void>;
    moveMessage(uid: number, destFolder: string): Promise<void>;
    createFolder(name: string): Promise<void>;
    deleteFolder(name: string): Promise<void>;
    getUnreadCount(folder?: string): Promise<number>;
    decodeHeader(value: string): string;
    private sanitizeImapInput;
    private escapeQuoted;
    logout(): Promise<void>;
    disconnect(): void;
}