diff --git a/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java b/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
index af26da3db8..4a4e5838ec 100644
--- a/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
+++ b/app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java
@@ -23,7 +23,6 @@ import android.app.Dialog;
 import android.app.TimePickerDialog;
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.os.Build;
 import android.os.Bundle;
 import android.text.format.DateFormat;
 import android.view.LayoutInflater;
@@ -92,6 +91,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
 
     private SwitchCompat swCheckAuthentication;
     private SwitchCompat swCheckTls;
+    private ImageButton ibCheckTlsInfo;
     private SwitchCompat swCheckReply;
     private SwitchCompat swCheckMx;
     private SwitchCompat swCheckBlocklist;
@@ -163,6 +163,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
 
         swCheckAuthentication = view.findViewById(R.id.swCheckAuthentication);
         swCheckTls = view.findViewById(R.id.swCheckTls);
+        ibCheckTlsInfo = view.findViewById(R.id.ibCheckTlsInfo);
         swCheckReply = view.findViewById(R.id.swCheckReply);
         swCheckMx = view.findViewById(R.id.swCheckMx);
         swCheckBlocklist = view.findViewById(R.id.swCheckBlocklist);
@@ -395,6 +396,13 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
             }
         });
 
+        ibCheckTlsInfo.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Helper.viewFAQ(v.getContext(), 176);
+            }
+        });
+
         swCheckReply.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
diff --git a/app/src/main/res/layout/fragment_options_synchronize.xml b/app/src/main/res/layout/fragment_options_synchronize.xml
index 5ff99588e3..b2962cc490 100644
--- a/app/src/main/res/layout/fragment_options_synchronize.xml
+++ b/app/src/main/res/layout/fragment_options_synchronize.xml
@@ -770,6 +770,17 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/swCheckTls" />
 
+                <eu.faircode.email.FixedImageButton
+                    android:id="@+id/ibCheckTlsInfo"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:contentDescription="@string/title_info"
+                    android:tooltipText="@string/title_info"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvCheckTlsHint"
+                    app:srcCompat="@drawable/twotone_info_24" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swCheckReply"
                     android:layout_width="0dp"
@@ -779,7 +790,7 @@
                     android:text="@string/title_advanced_check_reply_domain"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/tvCheckTlsHint"
+                    app:layout_constraintTop_toBottomOf="@id/ibCheckTlsInfo"
                     app:switchPadding="12dp" />
 
                 <eu.faircode.email.FixedTextView