import type { EmailValue } from "./types";
export declare const formatEmailInputOption: (email: string) => EmailValue;
export declare const pruneDuplicates: (existing: EmailValue[], newEmailStrings: string[]) => {
    uniqueEmails: EmailValue[];
    duplicates: string[];
};
export declare const filterValidEmails: (emails: EmailValue[]) => EmailValue[];
export declare const pluralizeEmail: (count: number) => string;
export declare const formatDuplicateWarning: (duplicates: string[]) => string;