diff --git a/FAQ.md b/FAQ.md
index 0f92314015..4984d83cc9 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -3955,6 +3955,8 @@ Reformatting and displaying such messages will take too long. You can try to use
Experimental features can be enabled in the miscellaneous-settings tab page.
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*Send hard bounce (version 1.1477+)*
Send a [Delivery Status Notification](https://tools.ietf.org/html/rfc3464) (=hard bounce) via the reply/answer menu.
diff --git a/index.html b/index.html
index d32769aa74..e37594c7f5 100644
--- a/index.html
+++ b/index.html
@@ -2017,6 +2017,7 @@ category:promotions
(125) What are the current experimental features?
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Experimental features can be enabled in the miscellaneous-settings tab page.
+Send hard bounce (version 1.1477+)
Send a Delivery Status Notification (=hard bounce) via the reply/answer menu.
Hard bounces will mostly be processed automatically because they affect the reputation of the email provider. The bounce address (=Return-Path header) is mostly very specific, so the email server can determine the sending account.