POP3 doesn't support folders

FAQ.md

@@ -304,6 +304,7 @@ Fonts, sizes, colors, etc should be material design whenever possible.
 * [(167) How can I use DeepL?](#user-content-faq167)
 * [(168) What is a spam block list?](#user-content-faq168)
 * [(169) Why does the app not start automatically?](#user-content-faq169)
+* [(170) Why can't folders be created with POP3?](#user-content-faq170)
 
 [I have another question.](#user-content-support)
 
@@ -3783,6 +3784,23 @@ So, if the app isn't started automatically, please check the Android settings.
 
 For example for Huawei/EMUI, please [see here](https://dontkillmyapp.com/huawei) for a guide.
 
+<br>
+
+<a name="faq170"></a>
+**(170) Why can't folders be created with POP3?**
+
+The POP3 protocol has commands to download and delete messages from the inbox only.
+There are no commands to access any other folder.
+
+Creating a local folder only and storing messages on your device only is a bad idea
+because losing or breaking your device would mean losing your messages.
+Therefore this isn't supportable.
+
+Please note that FairEmail doesn't store a copy of your messages in the cloud for privacy reasons.
+
+If you want to store messages in folders, please use IMAP,
+so that there is always a copy of the messages on the email server.
+
 <br />
 
 <h2><a name="get-support"></a>Get support</h2>

app/src/main/java/eu/faircode/email/FragmentFolders.java

@@ -212,7 +212,8 @@ public class FragmentFolders extends FragmentBase {
             public void onClick(View v) {
                 Boolean pop = (Boolean) v.getTag();
                 if (pop != null && pop) {
-                    ToastEx.makeText(v.getContext(), R.string.title_pop_folders, Toast.LENGTH_LONG).show();
+                    Helper.viewFAQ(v.getContext(), 170, true);
+                    //ToastEx.makeText(v.getContext(), R.string.title_pop_folders, Toast.LENGTH_LONG).show();
                     return;
                 }