type GmailClient = any;
import type { MailProvider, ProviderCapabilities, EmailSummary, EmailMessage, EmailThread, Label, SendOptions, ReplyOptions, ForwardOptions, DraftOptions, DraftSummary, UnreadCount, ExportedMessage } from "./interface.js";
export type GmailEncodeOptions = SendOptions & {
    inReplyTo?: string;
    references?: string;
};
export declare function buildEmailBuffer(to: string[], subject: string, body: string, options?: GmailEncodeOptions): Buffer;
export declare function shouldUseMediaUpload(raw: Buffer, options?: GmailEncodeOptions): boolean;
export declare class GmailProvider implements MailProvider {
    private gmail;
    readonly type = "gmail";
    readonly capabilities: ProviderCapabilities;
    constructor(gmail: GmailClient);
    private sendAsCache?;
    /**
     * Gmail silently falls back to the primary address when the From header
     * names an address that isn't a verified send-as alias, so a wrong sender
     * looks like a successful send. Check up front and fail loudly instead.
     * Pending (unverified) aliases are rejected; Gmail will not send as them.
     */
    assertCanSendAs(from: string): Promise<void>;
    searchMessages(query: string, maxResults?: number, folder?: string): Promise<EmailSummary[]>;
    findMessageIds(query: string, folder?: string, maxResults?: number): Promise<string[]>;
    readMessage(messageId: string): Promise<EmailMessage>;
    private fetchMessage;
    readThread(threadId: string): Promise<EmailThread>;
    sendMessage(to: string[], subject: string, body: string, options?: SendOptions): Promise<string>;
    replyToMessage(messageId: string, body: string, options?: ReplyOptions): Promise<string>;
    forwardMessage(messageId: string, to: string[], options?: ForwardOptions): Promise<string>;
    createDraft(to: string[], subject: string, body: string, options?: DraftOptions): Promise<string>;
    trashMessages(messageIds: string[]): Promise<void>;
    listLabels(): Promise<Label[]>;
    createLabel(name: string): Promise<Label>;
    deleteLabel(labelId: string): Promise<void>;
    resolveLabelIds(labels: string[], opts?: {
        create?: boolean;
    }): Promise<string[]>;
    labelNamesById(): Promise<Map<string, string>>;
    modifyLabels(messageId: string, add: string[], remove: string[]): Promise<void>;
    batchModifyLabels(messageIds: string[], add: string[], remove: string[]): Promise<void>;
    downloadAttachment(messageId: string, attachmentId: string): Promise<{
        filename: string;
        data: Buffer;
        mimeType: string;
    }>;
    inboxSummary(): Promise<{
        total: number;
        unread: number;
        recent: EmailSummary[];
    }>;
    markRead(messageId: string, read: boolean): Promise<void>;
    starMessage(messageId: string, starred: boolean): Promise<void>;
    archiveMessage(messageId: string): Promise<void>;
    listDrafts(maxResults?: number): Promise<DraftSummary[]>;
    hasCorrespondedWith(address: string): Promise<boolean>;
    getDraftRecipients(draftId: string): Promise<string[]>;
    draftFingerprint(draftId: string): Promise<string>;
    sendDraft(draftId: string): Promise<string>;
    countUnreadByLabel(): Promise<UnreadCount[]>;
    exportMessage(messageId: string): Promise<ExportedMessage>;
    messagesSince(since: string, folder?: string, maxResults?: number): Promise<EmailSummary[]>;
    get gmailApi(): any;
}
export {};