diff --git a/README.md b/README.md
index 2bd1bec..09126a3 100644
--- a/README.md
+++ b/README.md
@@ -135,7 +135,7 @@ The page must call `[[!Sendex? &id=...]]` (any newsletter id is fine). Query par
 | `code` | yes | `sxSubscriber.code` |
 | `newsletter_id` | no | Same as newsletter id; avoids confusion with MODX resource `id`. Snippet resolves the owner newsletter from `code` if the snippet `&id` differs. |
 
-Default letter template links to `site_start` with `sx_action`, `newsletter_id`, and `code`.
+Default letter template uses `[[+unsubscribe_url]]` (built at send time via `makeUrl` on `sendex_unsubscribe_page` or `site_start`). Do **not** nest `[[++site_start]]` inside `[[~…]]` — that becomes `[[~[[57]]]]` and logs "Bad link tag".
 
 ## Cron
 
diff --git a/core/components/sendex/docs/changelog.txt b/core/components/sendex/docs/changelog.txt
index 4ff2c16..6fea2e6 100644
--- a/core/components/sendex/docs/changelog.txt
+++ b/core/components/sendex/docs/changelog.txt
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [2.0.1-pl] - 2026-07-29
 
 ### Fixed
+- Email templates: nested `[[~[[++site_start]]]]` unsubscribe links became `[[~[[57]]]]` and logged "Bad link tag". Queue body render now provides `[[+unsubscribe_url]]`, flattens residual nested `[[~[[N]]]]` before parse, and documents `sendex_unsubscribe_page` (fallback: `site_start`).
 - [#119] Mgr row-action icon buttons (edit/disable/send/remove) did nothing when the click hit the inner `<i>`: shared `SelectionMixin.onClick` now finds the button via `getTarget('button')`, resolves the row via `findRowIndex`, and reads the action from `data-action`.
 - [#114] Mgr newsletter create appeared to hang on «Загружается…» and the grid stayed empty after reload (row was saved; duplicate-name error on retry). Newsletter `getlist` no longer uses JOIN/subquery SQL (subscriber count and template name are added in `prepareRow`); grid refresh after save is deferred so the create window can close first; `getlist`/`get` accept `view_sendex` as well as `view_document`; create `beforeSet()` returns strict `true` for MODX 3. Image column renderer uses `Sendex.utils.escapeHtmlAttr` (ExtJS does not keep grid scope for column renderers).
 - [#111] Mgr row-action and menu icons no longer force `font-family: "Font Awesome 5 Free"` (Sendex does not load FA5); icons inherit the mgr icon font on MODX 2.3+/3.x or bundled FA4 on older MODX.
diff --git a/core/components/sendex/elements/templates/template.sendex.tpl b/core/components/sendex/elements/templates/template.sendex.tpl
index aa355ac..486be1f 100644
--- a/core/components/sendex/elements/templates/template.sendex.tpl
+++ b/core/components/sendex/elements/templates/template.sendex.tpl
@@ -52,12 +52,12 @@
 <hr>
 
 <h1>Link for unsubscribe</h1>
-Link must lead to a page that calls the Sendex snippet. Required query params:
-<code>sx_action=unsubscribe</code>, <code>code</code> (subscriber code). Optional:
-<code>newsletter_id</code> (same as <code>[[+newsletter.id]]</code>; the snippet also resolves the newsletter from <code>code</code> if the snippet <code>&id</code> differs).
-<br/>
-<pre>&#91;&#91;~id_of_resource?scheme=`full`&sx_action=`unsubscribe`&newsletter_id=`&#91;&#91;+newsletter.id&#93;&#93;`&code=`&#91;&#91;+subscriber.code&#93;&#93;`&#93;&#93;</pre>
+<p>Prefer the ready-made placeholder (built in PHP — avoids nested link tags):</p>
+<pre>&#91;&#91;+unsubscribe_url&#93;&#93;</pre>
+<p>Example:</p>
+<a href="[[+unsubscribe_url]]">Unsubscribe from this newsletter</a>
 
-<br/><br/>
-For example (works on site_start even when the snippet &id is another newsletter):<br/>
-<a href="[[~[[++site_start]]?scheme=`full`&sx_action=`unsubscribe`&newsletter_id=`[[+newsletter.id]]`&code=`[[+subscriber.code]]`]]">Unsubscribe from this newsletter</a>
+<p>If you build the URL yourself, use a numeric resource id (not <code>[[++site_start]]</code> inside <code>[[~…]]</code>).
+Required query params: <code>sx_action=unsubscribe</code>, <code>code</code>. Optional: <code>newsletter_id</code>.</p>
+<pre>&#91;&#91;~id_of_resource?scheme=`full`&sx_action=`unsubscribe`&newsletter_id=`&#91;&#91;+newsletter.id&#93;&#93;`&code=`&#91;&#91;+subscriber.code&#93;&#93;`&#93;&#93;</pre>
+<p>Optional system setting <code>sendex_unsubscribe_page</code> overrides <code>site_start</code> for <code>[[+unsubscribe_url]]</code>.</p>
diff --git a/core/components/sendex/model/sendex/sxqueuebodyrenderer.class.php b/core/components/sendex/model/sendex/sxqueuebodyrenderer.class.php
index a803adf..45b2ee3 100644
--- a/core/components/sendex/model/sendex/sxqueuebodyrenderer.class.php
+++ b/core/components/sendex/model/sendex/sxqueuebodyrenderer.class.php
@@ -62,8 +62,9 @@ public static function render($xpdo, $newsletter, $subscriber)
         }
 
         $scriptProperties = array(
-            'newsletter' => $newsletter->toArray(),
-            'subscriber' => $subscriber->toArray(),
+            'newsletter'      => $newsletter->toArray(),
+            'subscriber'      => $subscriber->toArray(),
+            'unsubscribe_url' => self::buildUnsubscribeUrl($xpdo, $newsletter, $subscriber),
         );
 
         $userId = (int) $subscriber->get('user_id');
@@ -82,6 +83,9 @@ public static function render($xpdo, $newsletter, $subscriber)
         $template->_output = '';
         $body = $template->process($scriptProperties);
 
+        // Nested [[~[[++site_start]]]] becomes [[~[[57]]]] after ++ expands — invalid link tag.
+        $body = self::flattenNestedResourceLinks($body, (int) $xpdo->getOption('site_start'));
+
         /** @var modParser|null $parser */
         $parser = sxModxCompat::getParser($xpdo);
         if ($parser && $parser instanceof modParser) {
@@ -92,6 +96,62 @@ public static function render($xpdo, $newsletter, $subscriber)
         return $body;
     }
 
+    /**
+     * Absolute unsubscribe URL for email templates (avoids nested [[~[[++site_start]]]]).
+     *
+     * @param object $xpdo
+     * @param object $newsletter
+     * @param object $subscriber
+     * @return string
+     */
+    public static function buildUnsubscribeUrl($xpdo, $newsletter, $subscriber)
+    {
+        $resourceId = (int) $xpdo->getOption('sendex_unsubscribe_page', null, 0);
+        if ($resourceId <= 0) {
+            $resourceId = (int) $xpdo->getOption('site_start');
+        }
+        if ($resourceId <= 0 || !method_exists($xpdo, 'makeUrl')) {
+            return '';
+        }
+
+        $params = array(
+            'sx_action'     => 'unsubscribe',
+            'newsletter_id' => (int) $newsletter->get('id'),
+            'code'          => (string) $subscriber->get('code'),
+        );
+
+        $url = $xpdo->makeUrl($resourceId, '', $params, 'full');
+
+        return is_string($url) ? $url : '';
+    }
+
+    /**
+     * Rewrite [[~[[++site_start]]…]] / residual [[~[[123]]…]] into [[~123…]].
+     *
+     * @param string $body
+     * @param int $siteStart
+     * @return string
+     */
+    public static function flattenNestedResourceLinks($body, $siteStart)
+    {
+        $siteStart = (int) $siteStart;
+        if ($siteStart <= 0 || !is_string($body) || $body === '') {
+            return $body;
+        }
+
+        $body = preg_replace(
+            '/\[\[~\s*\[\[\+\+site_start\]\]/',
+            '[[~' . $siteStart,
+            $body
+        );
+
+        return preg_replace(
+            '/\[\[~\s*\[\[(\d+)\]\]/',
+            '[[~$1',
+            $body
+        );
+    }
+
     /**
      * @param object $xpdo
      * @param object $queue sxQueue-like
diff --git a/tests/Stubs/FakeModX.php b/tests/Stubs/FakeModX.php
index b303afc..1be77cf 100644
--- a/tests/Stubs/FakeModX.php
+++ b/tests/Stubs/FakeModX.php
@@ -565,6 +565,29 @@ public function getTableName($class)
         return $class;
     }
 
+    /**
+     * @param int|string $id
+     * @param string $context
+     * @param array|string $args
+     * @param mixed $scheme
+     * @return string
+     */
+    public function makeUrl($id, $context = '', $args = array(), $scheme = -1)
+    {
+        if (is_array($args)) {
+            $query = http_build_query($args);
+        } else {
+            $query = (string) $args;
+        }
+
+        $url = 'https://example.com/index.php?id=' . (int) $id;
+        if ($query !== '') {
+            $url .= '&' . $query;
+        }
+
+        return $url;
+    }
+
     /**
      * @return FakePdoConnection
      */
diff --git a/tests/Unit/QueueBodyRendererTest.php b/tests/Unit/QueueBodyRendererTest.php
index 51abf03..d2b6521 100644
--- a/tests/Unit/QueueBodyRendererTest.php
+++ b/tests/Unit/QueueBodyRendererTest.php
@@ -113,4 +113,63 @@ public function testDeliverMailRendersCompactBodyAtSendTime()
         $this->assertTrue(sxQueueSender::deliverMail($queue));
         $this->assertSame('Body for send@example.com', $mail->sets[modMail::MAIL_BODY]);
     }
+
+    public function testFlattenNestedResourceLinksRewritesSiteStartAndNumericNesting()
+    {
+        $nested = '<a href="[[~[[++site_start]]?scheme=`full`&sx_action=`unsubscribe`]]">x</a>';
+        $this->assertSame(
+            '<a href="[[~57?scheme=`full`&sx_action=`unsubscribe`]]">x</a>',
+            sxQueueBodyRenderer::flattenNestedResourceLinks($nested, 57)
+        );
+
+        $residual = '[[~[[57]]?code=`abc`]]';
+        $this->assertSame(
+            '[[~57?code=`abc`]]',
+            sxQueueBodyRenderer::flattenNestedResourceLinks($residual, 57)
+        );
+    }
+
+    public function testBuildUnsubscribeUrlUsesSiteStartAndParams()
+    {
+        $this->modx->options['site_start'] = 57;
+
+        $newsletter = new TestableNewsletter($this->modx);
+        $newsletter->set('id', 1);
+
+        $subscriber = new sxSubscriber($this->modx);
+        $subscriber->fromArray(array(
+            'id'            => 2,
+            'newsletter_id' => 1,
+            'code'          => 'deadbeef',
+            'email'         => 'a@example.com',
+        ));
+
+        $url = sxQueueBodyRenderer::buildUnsubscribeUrl($this->modx, $newsletter, $subscriber);
+
+        $this->assertStringContainsString('id=57', $url);
+        $this->assertStringContainsString('sx_action=unsubscribe', $url);
+        $this->assertStringContainsString('newsletter_id=1', $url);
+        $this->assertStringContainsString('code=deadbeef', $url);
+    }
+
+    public function testBuildUnsubscribeUrlPrefersSendexUnsubscribePage()
+    {
+        $this->modx->options['site_start'] = 57;
+        $this->modx->options['sendex_unsubscribe_page'] = 12;
+
+        $newsletter = new TestableNewsletter($this->modx);
+        $newsletter->set('id', 3);
+
+        $subscriber = new sxSubscriber($this->modx);
+        $subscriber->fromArray(array(
+            'id'            => 4,
+            'newsletter_id' => 3,
+            'code'          => 'c0de',
+            'email'         => 'b@example.com',
+        ));
+
+        $url = sxQueueBodyRenderer::buildUnsubscribeUrl($this->modx, $newsletter, $subscriber);
+        $this->assertStringContainsString('id=12', $url);
+        $this->assertStringNotContainsString('id=57', $url);
+    }
 }
diff --git a/tests/Unit/UnsubscribeResolveTest.php b/tests/Unit/UnsubscribeResolveTest.php
index 0f3aef5..698625f 100644
--- a/tests/Unit/UnsubscribeResolveTest.php
+++ b/tests/Unit/UnsubscribeResolveTest.php
@@ -78,9 +78,11 @@ public function testTemplateIncludesNewsletterIdQueryParam()
             dirname(__DIR__, 2) . '/core/components/sendex/elements/templates/template.sendex.tpl'
         );
 
+        $this->assertStringContainsString('[[+unsubscribe_url]]', $template);
         $this->assertStringContainsString('sx_action=`unsubscribe`', $template);
-        $this->assertStringContainsString('newsletter_id=`[[+newsletter.id]]`', $template);
-        $this->assertStringContainsString('code=`[[+subscriber.code]]`', $template);
+        $this->assertStringContainsString('newsletter_id=`&#91;&#91;+newsletter.id&#93;&#93;`', $template);
+        $this->assertStringContainsString('code=`&#91;&#91;+subscriber.code&#93;&#93;`', $template);
+        $this->assertStringNotContainsString('[[~[[++site_start]]', $template);
     }
 
     public function testSnippetResolvesByCodeBeforeUnsubscribe()