Added POP3 block sender notice

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

@@ -83,6 +83,7 @@ public class FragmentDialogJunk extends FragmentDialogBase {
         final View view = LayoutInflater.from(context).inflate(R.layout.dialog_junk, null);
         final TextView tvMessage = view.findViewById(R.id.tvMessage);
         final ImageButton ibInfoProvider = view.findViewById(R.id.ibInfoProvider);
+        final TextView tvPopHint = view.findViewById(R.id.tvPopHint);
         final CheckBox cbBlockSender = view.findViewById(R.id.cbBlockSender);
         final CheckBox cbBlockDomain = view.findViewById(R.id.cbBlockDomain);
         final ImageButton ibMore = view.findViewById(R.id.ibMore);
@@ -119,6 +120,8 @@ public class FragmentDialogJunk extends FragmentDialogBase {
             }
         });
 
+        tvPopHint.setVisibility(imap ? View.GONE : View.VISIBLE);
+
         cbBlockSender.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

app/src/main/res/layout/dialog_junk.xml

@@ -49,6 +49,18 @@
             app:srcCompat="@drawable/twotone_info_24"
             app:tint="?attr/colorAccent" />
 
+        <eu.faircode.email.FixedTextView
+            android:id="@+id/tvPopHint"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:text="@string/title_junk_pop_hint"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="bold"
+            app:layout_constraintEnd_toStartOf="@+id/ibInfoProvider"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/tvJunkHint" />
+
         <CheckBox
             android:id="@+id/cbBlockSender"
             android:layout_width="wrap_content"
@@ -57,7 +69,7 @@
             android:text="@string/title_block_sender"
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvJunkHint" />
+            app:layout_constraintTop_toBottomOf="@id/tvPopHint" />
 
         <CheckBox
             android:id="@+id/cbBlockDomain"

app/src/main/res/values/strings.xml

@@ -91,6 +91,10 @@
     </plurals>
     <string name="title_ask_spam_who">Treat message from %1$s as spam?</string>
     <string name="title_junk_hint">Your email provider is responsible for filtering spam. An email app does not have all the data needed to do this reliably.</string>
+    <string name="title_junk_pop_hint">
+        Messages from blocked senders will not be downloaded.
+        If "Leave messages on server" is not enabled, these messages will be lost permanently!
+    </string>
 
     <string name="title_block">Block %1$s</string>
     <string name="title_block_sender">Block sender</string>