The IRS warned earlier this month to stay vigilant as scammers work year-round: https://www.irs.gov/newsroom/irs-warning-scammers-work-year-round-stay-vigilant

If you receive an e-mail from CCH-ReturnNotification@wolterskluwer.com with the subject: “2021 Electronic Return Accepted by the IRS” – it is a real confirmation and not a scam. This e-mail message is generated from our tax software provider to let you know that the IRS has received your return. There is no action required.