Comments: Line length is an issue in plain text format messages and in rich-text format (RTF) messages sent to recipients whose entries in your address book are not set up for RTF. It is not an issue in HTML messages, unless you send an HTML message to someone whose mail program can’t display HTML (such as Outlook 97). Mail may use a “content-transfer-encoding” called “quotedprintable,” which does not have a fixed line length. Some e-mail programs cannot wrap “quoted-printable” text and, therefore, display it all as one long line. On the other hand, if you send mail using a fixed line length, when recipients reply and using “Internet-style” quoting, the resulting message may have lines that wrap with just one or two words on a line.
Solution: The default setting in Outlook 2003 is to insert a hard return at the end of each line in a plain text message. This causes long URLs to be unusable in the received message. You can turn off these hard returns (and, by default, use quoted-printable encoding) by adding a WrapLines entry to the Windows registry. Here’s how it’s done, as described in the MSKB article available at http://support.microsoft.com/?id=823921:
1. Locate, and then click the following registry key: HKEY_Current_User\Software\Microsoft\Office\11.0\Common\MailSettings
2. In the right-pane, double-click the WrapLinesDWORD value.
3. Note the value that appears in the Value Data box.
4. If the WrapLines value is set to a non-zero value or is not present (the default setting), plain text lines are wrapped before the e-mail message is encoded. In this situation, you must create the WrapLines value. To do so, follow these steps:
a. Locate, and then click the following registry key: HKEY_Current_User\Software\Microsoft\Office\11.0\Common\MailSettings
b. On the Edit menu, click Add Value.
c. In the Value Name box, type WrapLines.
d. Click REG_DWORD in the Data Type drop-down list, and then click OK.
e. In the Data box, type 0, and then click OK.
If the WrapLines value is set to 0, no line-wrapping is performed before the e-mail message is encoded.