These are instructions on how to open winmail.dat attachment files on a Mac. You may need to do this if you've received a trusted email attachment from a Windows user that can't be opened on your Mac.

This message indicates something is wrong with the Mail Downloads folder’s permissions. Mail has stymied some people after they upgrade macOS and try to open attachments. Instead of the attachment ...

Email still plays an important role in sending important updates, sharing important documents, and mediating professional relationships. and sending important file attachments. In the Gmail app, you ...