diff --git a/app/Attachment.php b/app/Attachment.php
index df77e3ff..3de5ca4b 100644
--- a/app/Attachment.php
+++ b/app/Attachment.php
@@ -238,13 +238,33 @@ class Attachment extends Model
         }
         $attachments = self::whereIn('id', $attachment_ids)->get();
 
+        // Delete from disk
+        self::deleteForever($attachments);
+    }
+
+    /**
+     * Delete attachments by thread IDs.
+     */
+    public static function deleteByThreadIds($thread_ids)
+    {
+        if (!count($thread_ids)) {
+            return;
+        }
+        $attachments = self::whereIn('thread_id', $thread_ids)->get();
+
+        // Delete from disk
+        self::deleteForever($attachments);
+    }
+
+    public static function deleteForever($attachments)
+    {
         // Delete from disk
         foreach ($attachments as $attachment) {
             Storage::delete($attachment->getStorageFilePath());
         }
 
         // Delete from DB
-        self::whereIn('id', $attachment_ids)->delete();
+        self::whereIn('id', $attachments->pluck('id')->toArray())->delete();
     }
 
     /**
diff --git a/app/Conversation.php b/app/Conversation.php
index 6ac359e6..83d7b4ef 100644
--- a/app/Conversation.php
+++ b/app/Conversation.php
@@ -1343,6 +1343,27 @@ class Conversation extends Model
         \Eventy::action('conversation.status_changed', $this, $user, $changed_on_reply = false, $prev_status);
     }
 
+    public function deleteForever()
+    {
+        self::deleteConversationsForever([$this->id]);
+    }
+
+    public static function deleteConversationsForever($conversation_ids)
+    {
+        \Eventy::action('conversations.before_delete_forever', $conversation_ids);
+
+        //$conversation_ids = $conversations->pluck('id')->toArray();
+
+        // Delete attachments.
+        $thread_ids = Thread::whereIn('conversation_id', $conversation_ids)->pluck('id')->toArray();
+        Attachment::deleteByThreadIds($thread_ids);
+
+        // Delete threads.
+        Thread::whereIn('conversation_id', $conversation_ids)->delete();
+        // Delete conversations.
+        Conversation::whereIn('id', $conversation_ids)->delete();
+    }
+
     // /**
     //  * Get conversation meta data as array.
     //  */
diff --git a/app/Http/Controllers/ConversationsController.php b/app/Http/Controllers/ConversationsController.php
index 7741b7cd..18935cc2 100644
--- a/app/Http/Controllers/ConversationsController.php
+++ b/app/Http/Controllers/ConversationsController.php
@@ -1431,6 +1431,32 @@ class ConversationsController extends Controller
                 }
                 break;
 
+            // Delete conversation forever
+            case 'delete_conversation_forever':
+                $conversation = Conversation::find($request->conversation_id);
+                if (!$conversation) {
+                    $response['msg'] = __('Conversation not found');
+                } elseif (!$user->can('delete', $conversation)) {
+                    $response['msg'] = __('Not enough permissions');
+                }
+
+                if (!$response['msg']) {
+                    $folder_id = $conversation->getCurrentFolder();
+                    $mailbox = $conversation->mailbox;
+
+                    $conversation->deleteForever();
+
+                    // Recalculate only old and new folders
+                    $mailbox->updateFoldersCounters();
+
+                    $response['redirect_url'] = route('mailboxes.view.folder', ['id' => $conversation->mailbox_id, 'folder_id' => $folder_id]);
+
+                    $response['status'] = 'success';
+
+                    \Session::flash('flash_success_floating', __('Conversation deleted'));
+                }
+                break;
+
             // Restore conversation
             case 'restore_conversation':
                 $conversation = Conversation::find($request->conversation_id);
diff --git a/public/js/main.js b/public/js/main.js
index 59bf4107..66d42589 100644
--- a/public/js/main.js
+++ b/public/js/main.js
@@ -955,7 +955,7 @@ function initConversation()
 		});
 
 	    // Delete conversation
-	    jQuery(".conv-delete").click(function(e){
+	    jQuery(".conv-delete,.conv-delete-forever").click(function(e){
 	    	var confirm_html = '<div>'+
 			'<div class="text-center">'+
 			'<div class="text-larger margin-top-10">'+Lang.get("messages.confirm_delete_conversation")+'</div>'+
@@ -966,13 +966,18 @@ function initConversation()
     		'</div>'+
     		'</div>';
 
+    		var action = 'delete_conversation';
+    		if ($(this).hasClass('conv-delete-forever')) {
+    			action = 'delete_conversation_forever';
+    		}
+
 			showModalDialog(confirm_html, {
 				on_show: function(modal) {
 					modal.children().find('.delete-conversation-ok:first').click(function(e) {
 						modal.modal('hide');
 						fsAjax(
 							{
-								action: 'delete_conversation',
+								action: action,
 								conversation_id: getGlobalAttr('conversation_id')
 							},
 							laroute.route('conversations.ajax'),
diff --git a/resources/views/conversations/view.blade.php b/resources/views/conversations/view.blade.php
index ed2a9ca9..e424ddc2 100644
--- a/resources/views/conversations/view.blade.php
+++ b/resources/views/conversations/view.blade.php
@@ -31,7 +31,11 @@
                                 <li><a href="{{ route('conversations.ajax_html', ['action' =>
                                             'move_conv']) }}?conversation_id={{ $conversation->id }}" data-trigger="modal" data-modal-title="{{ __("Move Conversation") }}" data-modal-no-footer="true" data-modal-on-show="initMoveConv"><i class="glyphicon glyphicon-log-out"></i> {{ __("Move") }}</a></li>
                             @endif
-                            <li><a href="#" class="conv-delete"><i class="glyphicon glyphicon-trash"></i> {{ __("Delete") }}</a></li>
+                            @if ($conversation->state != App\Conversation::STATE_DELETED)
+                                <li><a href="#" class="conv-delete"><i class="glyphicon glyphicon-trash"></i> {{ __("Delete") }}</a></li>
+                            @else
+                                <li><a href="#" class="conv-delete-forever"><i class="glyphicon glyphicon-trash"></i> {{ __("Delete Forever") }}</a></li>
+                            @endif
                             @action('conversation.append_action_buttons', $conversation, $mailbox)
                         </ul>
                     </div>