<h2>SMTP forwarding</h2>
-<p>Fetchmails multidrop and rewrite options will process addresses
+<p>Fetchmail's multidrop and rewrite options will process addresses
received from remote sites. Special care must be taken so these
features cannot be abused to relay mail to foreign sites.</p>
have been read <em>by this client</em> – and that is exactly what
we need to do.</p>
-<p>If fetchmail is supposed to retrieve all
-mail from a mailbox reliably, without being disturbed by someone
-occasionally using another client on another host, or a webmailer, or
-similar, then <em>client</em>-side tracking of the state is
-indispensable. This is also needed to match behavior to ETRN and ODMR.</p>
+<p>If fetchmail is supposed to retrieve all mail from a mailbox
+reliably, without being disturbed by someone occasionally using another
+client on another host, or a webmailer, or similar, then
+<em>client</em>-side tracking of the state is indispensable. This is
+also needed to match behavior to ETRN and ODMR or to support read-only
+mailboxes in --keep mode.</p>
<h3>Present and future</h3>