diff --git a/FAQ.md b/FAQ.md
index 8384a746b8..a76b4c1c2f 100644
--- a/FAQ.md
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@@ -3411,6 +3411,8 @@ Synchronization for subscribed folders can therefore be disable, saving folder c
**(163) What is message classification?**
+**This is an experimental feature**
+
Message classification will attempt to automatically group emails into classes, based on their contents,
using [Bayesian statistics](https://en.wikipedia.org/wiki/Bayesian_statistics).
In the context of FairEmail, a folder is a class.
@@ -3432,6 +3434,8 @@ Moving a message from another email client will not result in reclassification b
Classification is optimized to use as little resources as possible, but will inevitably use some extra battery power.
+You can delete all classification data by turning classification three times off.
+
Automatic message classification is a pro feature, except for the spam folder.