If you're having trouble opening a DAT file, I'll show you a simple and free way to do it. This method works on both Mac and PC. Just open your browser and go to winmaildat.com. It's a straightforward ...

WASHINGTON, DC - APRIL 15: The Internal Revenue Service (IRS) building stands on April 15, 2019 in Washington, DC. April 15 is the deadline in the United States for residents to file their income tax ...