Hi Steve D2.
Being able to email your employees their paystubs is a great way to provide their payroll information as soon as you run payroll. I'd be happy to go over why the windat file is sent.
As stated earlier Windat is caused by an error with Microsoft Outlook. This is due to Outlook not being able to understand the file format and instead sends it instead as a Windat. I recommend following the steps in this article on how to troubleshoot this issue. If these steps don't resolve the issue I suggest trying a different email or contacting Microsoft to get this resolved.
If you have any questions let us know and we'd be happy to help.
