diff --git a/en_US/howto/dovecot.imapsieve.md b/en_US/howto/dovecot.imapsieve.md
index db16deb1..f5448dba 100644
--- a/en_US/howto/dovecot.imapsieve.md
+++ b/en_US/howto/dovecot.imapsieve.md
@@ -2,6 +2,11 @@
 
 [TOC]
 
+!!! attention
+
+    This feature is enabled by default if your iRedMail server was deployed
+    with our [iRedMail Easy platform](https://www.iredmail.org/easy.html).
+
 ## Summary
 
 Dovecot offers plugin `imap_sieve` to run sieve script for spam/virus scanning,
diff --git a/html/dovecot.imapsieve.html b/html/dovecot.imapsieve.html
index 2c58a728..d46c62fb 100644
--- a/html/dovecot.imapsieve.html
+++ b/html/dovecot.imapsieve.html
@@ -37,6 +37,11 @@
 </li>
 </ul>
 </div>
+<div class="admonition attention">
+<p class="admonition-title">Attention</p>
+<p>This feature is enabled by default if your iRedMail server was deployed
+with our <a href="https://www.iredmail.org/easy.html">iRedMail Easy platform</a>.</p>
+</div>
 <h2 id="summary">Summary</h2>
 <p>Dovecot offers plugin <code>imap_sieve</code> to run sieve script for spam/virus scanning,
 it's useful to let end users report spam/ham messages within webmail or MUA,