The IRS does not send emails or texts to taxpayers concerning the status of the tax refund. The 21 days is only an IRS target, it is not a guarantee that you will receive a refund after 21 days from being received by the IRS.
Once a tax return has been Accepted by the IRS or a State, TurboTax receives no further information concerning the tax return or the status of any tax refund.
If accepted by the IRS use the federal tax refund website to check the refund status - https://www.irs.gov/refunds
