Also,
Outlook 2000 uses what Microsoft calls Auto Format Reply. Due to the variety of message formats supported by different e-mail clients, Outlook 2000 ensures that e-mail recipients receive replies they can read easily. When users reply to a message, Outlook automatically uses the format of the original message. This is especially frustrating if you receive HTML e-mail and wish to send Plain Text e-mail.
To override the default for any individual message, click on the "Format" menu within the message and choose the desired format. Outlook 2000 lets you select the e-mail format for a mail message in what they call one-off editor switching. You can start a new message in a different format than the standard one by selecting New Mail Message Using from the Actions menu.
Outlook doesn't have any way to select the mail format to use when sending mail to a particular recipient when you use the drop-down list on a Contact item or an Address list entry.
NOTE: A problem you may encounter when you open an incoming e-mail message, you may see a blank message or three less than symbols (<<<) displayed instead of the message text.
In some cases, depending on the Internet e-mail software used, the message may contain other random, unrelated characters or the message body may be blank.
Microsoft describes this behavior in the Knowledge Base article (OL2000: Message Received from Outlook Express 5 May Contain Unrelated Characters)
NOTE: You may notice that plain text messages do not word wrap properly when you print the message, or view it in print preview. To resolve this problem you may need to obtain Microsoft Office 2000 Service Release 1/1a (SR-1/SR-1a).
Microsoft describes this behavior in the Knowledge Base article (OL2000: Plain Text Messages Word Wrap Incorrectly When Printed)
WARNING: If you are using a version of Outlook 2000 that has been installed with the corporate workgroup installation you may discover that when you set e-mail to send "Plain Text" that it has been changed to "Quoted-Printable" instead of 7-bit or ASCII.
WARNING: If you send messages with multiple file attachments to America Online (AOL) users, they do not receive the messages in a readable format. AOL combines the text of the message and the attachments into a single MIME (.mim) file.
AOL users who receive messages as MIME files can open them using WinZip in Classic mode. The message text and all of the attachments are displayed intact.
Microsoft describes this behavior in the Knowledge Base article (OL2000: Messages with Multiple Attachments Sent to AOL Users Do Not Display Correctly)