This guide explains why winmail.dat files appear, how to prevent them by configuring Outlook settings, and why older devices sometimes struggle to open PDFs. It also clarifies that properly sent HTML emails cannot be converted into winmail.dat files by recipients, making it a sender-controlled issue.

When you open an email saved to your downloads folder, Outlook may prompt you to save changes when closing it....

If you’ve emailed an invoice and it’s not showing in Law App under the correct file, the issue is usually...