Why cannot see the attachment in mail ? If the email has attachment, user cannot see the attachment in mail. That may have compatibility issues or the attachment is blocked by anti-virus software. Please zip the file and try it again. Prev Next Related Post: How to set up an email account in Outlook for Mac ?How to set up an email account in Mac Mail?Email Problem of China UsersWhat is Webmail?How to activate the Global SMTP port Outlook Express?Why the email attachment become winmail.dat ?