- On the File menu, click New, and then click Mail Message.
- On the Message tab, in the Include group, click Attach File.
- In the Insert File dialog box, browse to and select the file that you want to attach, and then click Insert.
If you don't see the file that you want in the appropriate folder, make sure that All files (*.*) is selected in the Files of type box, and that Windows Explorer is configured to show file name extensions.
Note: You can also attach file from the new message's Insert tab.
Important: By default, Outlook blocks potentially unsafe attachments (including .bat, .exe, .vbs, and .js files) that might contain viruses. If you attach such a file to an e-mail message, you will be asked whether you want to send a potentially unsafe attachment. If you answer Yes, Outlook will send the attachment. If you answer No, you can then remove the potentially unsafe attachment.