We suggest the following fixes if you get This is not a valid file name error in Outlook when sending email: Remove invalid special characters from the file name ...

When you send an email message from a Microsoft Outlook client that is configured incorrectly, the receiver may receive an attachment with the name winmail.dat. This is a binary attachment that ...

I need to send a bunch of HTML emails with a binar y attachmend and it would be easiest if I could do it from the command-line.<BR><BR>I know that I can easily send emails w/ attachments using "mutt ...