import * as z from "zod";
/**
 * Adds Gmail labels to one or many messages.
 *
 * Accepts label display names or immutable IDs and returns the modified message
 * IDs for action chaining.
 */
export declare const addGmailLabel: import("../../..").DefinedAction<z.ZodObject<{
    labels: z.ZodPipe<z.ZodUnion<readonly [z.ZodString, z.ZodArray<z.ZodString>]>, z.ZodTransform<string[], string | string[]>>;
    messageIds: z.ZodPipe<z.ZodUnion<readonly [z.ZodString, z.ZodArray<z.ZodString>]>, z.ZodTransform<string[], string | string[]>>;
}, z.core.$strip>, z.ZodArray<z.ZodString>, "google", false, never>;
//# sourceMappingURL=add-label.d.ts.map