Purchase Order can send documents via email in two different manners. You can pick the method you wish to use on the configuration form:
The default method is Direct via SMTP server.
This gives the best-looking result on the receiving end with most email programs because the email body is actually in true .HTML format, with your logo graphic encoded right in. The first time you use the method, you must specify an SMTP server:
By default, you are sent a "Blind Carbon Copy" (BCC) of the order so that you can file it in your email program's normal "sent items" folder.
Note that if you put your vendor's email address in their PO "To:" record (along with company name and surface address), the direct email option will find it and automatically put it in the email "To:" field for you!
You may put multiple addresses in all address fields, separated by commas.
You may also attach a file to the e-mail with the File Attachment button [...] below the memo field (not shown). Use this to send things like W9 forms, etc.
The other method is System MAPI client.
This method starts up your default MAPI system email program (such as Outlook) and adds the document and your logo graphic as attachments. The drawback of this is that the recipient must go through some extra steps in their end to view the order.