A script to be run before fetching the mail. The syntax is the same as
the @code{:program} keyword. This can also be a function to be run.
+One popular way to use this is to set up an SSH tunnel to access the
+@acronym{POP} server. Here's an example:
+
+@lisp
+(pop :server "127.0.0.1"
+ :port 1234
+ :user "foo"
+ :password "secret"
+ :prescript
+ "nohup ssh -f -L 1234:pop.server:110 remote.host sleep 3600 &")
+@end lisp
+
@item :postscript
A script to be run after fetching the mail. The syntax is the same as
the @code{:program} keyword. This can also be a function to be run.