export declare enum MAIL_MODULE_CONSTANTS {
    DEFAULT_CONNECTION = "default",
    OPTIONS_TOKEN = "mailModuleOptionsToken",
    GATEWAYS_TOKEN = "mailModuleGatewaysToken"
}
export declare enum GATEWAY {
    SMTP = "smtp",
    SLACK = "slack",
    CONSOLE = "console",
    SENDGRID = "sendgrid",
    RESEND = "resend"
}