import { Email } from '../models/Email';
import { EmailSearchFilters } from '../types';
import { MessageCollection } from './MessageCollection';
export declare class EmailCollection extends MessageCollection {
    static readonly _itemClass: typeof Email;
    /**
     * Get email by RFC 822 Message-ID
     */
    getByMessageId(accountId: string, messageId: string): Promise<Email | null>;
    /**
     * Get emails by account
     */
    getByAccount(accountId: string): Promise<Email[]>;
    /**
     * Get emails by folder
     */
    getByFolder(folderId: string): Promise<Email[]>;
    /**
     * Get emails by thread
     */
    getByThread(threadId: string): Promise<Email[]>;
    /**
     * Get unread emails
     */
    getUnread(accountId?: string): Promise<Email[]>;
    /**
     * Get flagged emails
     */
    getFlagged(accountId?: string): Promise<Email[]>;
    /**
     * Get emails with attachments
     */
    getWithAttachments(accountId?: string): Promise<Email[]>;
    /**
     * Get recent emails
     */
    getRecent(limit?: number, accountId?: string): Promise<Email[]>;
    /**
     * Count emails in a folder
     */
    countByFolder(folderId: string): Promise<number>;
    /**
     * Count unread emails in a folder
     */
    countUnreadByFolder(folderId: string): Promise<number>;
    /**
     * Count unread emails for an account
     */
    countUnreadByAccount(accountId: string): Promise<number>;
    /**
     * Search emails with email-specific filters.
     * Alias: `search()` for backward compatibility.
     */
    search(query: string, filters?: EmailSearchFilters): Promise<Email[]>;
    /**
     * Search emails with email-specific filters
     */
    searchEmails(query: string, filters?: EmailSearchFilters): Promise<Email[]>;
    /**
     * Mark all emails in a folder as read
     */
    markFolderRead(folderId: string): Promise<void>;
    /**
     * Delete emails by folder
     */
    deleteByFolder(folderId: string): Promise<number>;
    /**
     * Get email statistics for an account
     */
    getAccountStats(accountId: string): Promise<{
        total: number;
        unread: number;
        flagged: number;
        withAttachments: number;
        byType: Record<string, number>;
    }>;
    findByTenant(tenantId: string): Promise<Email[]>;
    findGlobal(): Promise<Email[]>;
    findWithGlobals(tenantId: string): Promise<Email[]>;
}
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