+To use the tool, imap.folder and either imap.tunnel or imap.host must be set
+to appropriate values.
+
+Variables
+~~~~~~~~~
+
+imap.folder::
+ The folder to drop the mails into, which is typically the Drafts
+ folder. For example: "INBOX.Drafts", "INBOX/Drafts" or
+ "[Gmail]/Drafts". Required to use imap-send.
+
+imap.tunnel::
+ Command used to setup a tunnel to the IMAP server through which
+ commands will be piped instead of using a direct network connection
+ to the server. Required when imap.host is not set to use imap-send.
+
+imap.host::
+ A URL identifying the server. Use a `imap://` prefix for non-secure
+ connections and a `imaps://` prefix for secure connections.
+ Ignored when imap.tunnel is set, but required to use imap-send
+ otherwise.
+
+imap.user::
+ The username to use when logging in to the server.
+
+imap.password::
+ The password to use when logging in to the server.
+
+imap.port::
+ An integer port number to connect to on the server.
+ Defaults to 143 for imap:// hosts and 993 for imaps:// hosts.
+ Ignored when imap.tunnel is set.
+
+imap.sslverify::
+ A boolean to enable/disable verification of the server certificate
+ used by the SSL/TLS connection. Default is `true`. Ignored when
+ imap.tunnel is set.
+
+Examples
+~~~~~~~~
+
+Using tunnel mode: