-enter Emacs. The mode line of the displayed window shows the date and
-any holidays that fall on that date.
+enter Emacs. @xref{Init File}. The mode line of the displayed window
+shows the date and any holidays that fall on that date.
+
+@findex diary-mail-entries
+@vindex diary-mail-days
+ Many users like to receive notice of events in their diary as email.
+To send such mail to yourself, use the command @kbd{M-x
+diary-mail-entries}. A prefix argument specifies how many days
+(starting with today) to check; otherwise, the variable
+@code{diary-mail-days} says how many days.