diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbc99ef..25255d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,21 @@
 2. Then, change the addon's version constraint to `^3.0`
 3. If you have any references to `DoubleThreeDigital` within your site in relation to this addon, replace it with `DuncanMcClean`
 
+## v2.1.3 (2023-04-21)
+
+### What's new
+
+- Added `{{ guest-entries:success }}` tag #53 #48
+
+### What's fixed
+
+- Fixed `error_redirect` parameter #51 #49
+- Fixed an issue when using title formats on collections #52 #50
+
+### Breaking changes
+
+The `success` key added in the last release has been reverted, in favour of the new `{{ guest-entries:success }}` tag. Apologies for any inconvenience.
+
 ## v2.1.2 (2023-04-17)
 
 ### What's improved
diff --git a/docs/tags.md b/docs/tags.md
index 28e371b..d66d145 100644
--- a/docs/tags.md
+++ b/docs/tags.md
@@ -106,10 +106,10 @@ If you'd like to show any errors after a user has submitted the Guest Entries fo
 
 ### Success
 
-If you'd like to show a success message after a user has submitted a Guest entry, you can test for the session success key. 
+If you'd like to show a success message after a user has submitted the Guest Entries form, you can use the `{{ guest-entries:success }}` tag, like shown below:
 
 ```antlers
-{{ if {session:has key="success"} }}
+{{ if {guest-entries:success} }}
     Well done buddy!
 {{ /if }}
 ```
diff --git a/src/Http/Controllers/GuestEntryController.php b/src/Http/Controllers/GuestEntryController.php
index e6e9e36..d1ad59d 100644
--- a/src/Http/Controllers/GuestEntryController.php
+++ b/src/Http/Controllers/GuestEntryController.php
@@ -43,12 +43,6 @@ public function store(StoreRequest $request)
             ->locale($this->guessSiteFromRequest($request))
             ->published(false);
 
-        if ($request->has('slug')) {
-            $entry->slug($request->get('slug'));
-        } else {
-            $entry->slug(Str::slug($request->get('title')));
-        }
-
         if ($collection->dated()) {
             $this->ignoredParameters[] = 'date';
             $entry->date($request->get('date') ?? now());
@@ -70,13 +64,19 @@ public function store(StoreRequest $request)
             );
         }
 
+        if ($request->has('slug')) {
+            $entry->slug($request->get('slug'));
+        } elseif ($collection->entryBlueprint()->hasField('title')) {
+            $entry->slug(
+                Str::slug($request->get('title') ?? $entry->autoGeneratedTitle(), '-', $entry->site()->lang())
+            );
+        }
+
         $entry->touch();
 
         event(new GuestEntryCreated($entry));
 
-        return $this->withSuccess($request, [
-            'success' => true,
-        ]);
+        return $this->withSuccess($request);
     }
 
     public function update(UpdateRequest $request)
@@ -149,9 +149,7 @@ public function update(UpdateRequest $request)
 
         event(new GuestEntryUpdated($entry));
 
-        return $this->withSuccess($request, [
-            'success' => true,
-        ]);
+        return $this->withSuccess($request);
     }
 
     public function destroy(DestroyRequest $request)
@@ -166,9 +164,7 @@ public function destroy(DestroyRequest $request)
 
         event(new GuestEntryDeleted($entry));
 
-        return $this->withSuccess($request, [
-            'success' => true,
-        ]);
+        return $this->withSuccess($request);
     }
 
     protected function processField(Field $field, $key, $value, $request): mixed
@@ -337,22 +333,10 @@ protected function withSuccess(Request $request, array $data = [])
             return response()->json($data);
         }
 
+        $request->session()->put('guest-entries.success', true);
+
         return $request->_redirect ?
             redirect($request->_redirect)->with($data)
             : back()->with($data);
     }
-
-    protected function withErrors(Request $request, string $errorMessage)
-    {
-        if ($request->wantsJson()) {
-            return response()->json([
-                'status' => 'error',
-                'message' => $errorMessage,
-            ]);
-        }
-
-        return $request->_error_redirect
-            ? redirect($request->_error_redirect)->withErrors($errorMessage, 'guest-entries')
-            : back()->withErrors($errorMessage, 'guest-entries');
-    }
 }
diff --git a/src/Http/Requests/Concerns/HandleFailedValidation.php b/src/Http/Requests/Concerns/HandleFailedValidation.php
new file mode 100644
index 0000000..fe69d47
--- /dev/null
+++ b/src/Http/Requests/Concerns/HandleFailedValidation.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace DoubleThreeDigital\GuestEntries\Http\Requests\Concerns;
+
+trait HandleFailedValidation
+{
+    /**
+     * Get the URL to redirect to on a validation error.
+     *
+     * @return string
+     */
+    protected function getRedirectUrl()
+    {
+        if ($this->has('_error_redirect')) {
+            return $this->get('_error_redirect');
+        }
+
+        return parent::getRedirectUrl();
+    }
+}
diff --git a/src/Http/Requests/DestroyRequest.php b/src/Http/Requests/DestroyRequest.php
index 2a54b9e..3807021 100644
--- a/src/Http/Requests/DestroyRequest.php
+++ b/src/Http/Requests/DestroyRequest.php
@@ -8,7 +8,8 @@
 
 class DestroyRequest extends FormRequest
 {
-    use Concerns\WhitelistedCollections;
+    use Concerns\WhitelistedCollections,
+        Concerns\HandleFailedValidation;
 
     public function authorize()
     {
diff --git a/src/Http/Requests/StoreRequest.php b/src/Http/Requests/StoreRequest.php
index 2c23c7f..fe83e32 100644
--- a/src/Http/Requests/StoreRequest.php
+++ b/src/Http/Requests/StoreRequest.php
@@ -4,11 +4,13 @@
 
 use DuncanMcClean\GuestEntries\Rules\CollectionExists;
 use Illuminate\Foundation\Http\FormRequest;
+use Statamic\Facades\Collection;
 
 class StoreRequest extends FormRequest
 {
     use Concerns\AcceptsFormRequests,
-        Concerns\WhitelistedCollections;
+        Concerns\WhitelistedCollections,
+        Concerns\HandleFailedValidation;
 
     public function authorize()
     {
@@ -24,7 +26,11 @@ public function rules()
             '_redirect' => ['nullable', 'string'],
             '_error_redirect' => ['nullable', 'string'],
             '_request' => ['nullable', 'string'],
-            'slug' => ['required_without:title'],
+            'slug' => [
+                Collection::find($this->get('_collection'))->autoGeneratesTitles()
+                    ? null
+                    : 'required_without:title',
+            ],
         ];
 
         if ($formRequest = $this->get('_request')) {
diff --git a/src/Http/Requests/UpdateRequest.php b/src/Http/Requests/UpdateRequest.php
index c6590be..e2db64c 100644
--- a/src/Http/Requests/UpdateRequest.php
+++ b/src/Http/Requests/UpdateRequest.php
@@ -9,7 +9,8 @@
 class UpdateRequest extends FormRequest
 {
     use Concerns\AcceptsFormRequests,
-        Concerns\WhitelistedCollections;
+        Concerns\WhitelistedCollections,
+        Concerns\HandleFailedValidation;
 
     public function authorize()
     {
diff --git a/src/Tags/Concerns/FormBuilder.php b/src/Tags/Concerns/FormBuilder.php
index d3d182b..27a8678 100644
--- a/src/Tags/Concerns/FormBuilder.php
+++ b/src/Tags/Concerns/FormBuilder.php
@@ -26,6 +26,10 @@ protected function createForm(string $action, array $data = [], string $method =
             $html .= $this->redirectField();
         }
 
+        if ($this->params->get('error_redirect') != null) {
+            $html .= $this->errorRedirectField();
+        }
+
         if ($this->params->get('request') != null) {
             $html .= $this->requestField();
         }
@@ -61,6 +65,11 @@ private function redirectField()
         return '<input type="hidden" name="_redirect" value="'.$this->params->get('redirect').'" />';
     }
 
+    private function errorRedirectField()
+    {
+        return '<input type="hidden" name="_error_redirect" value="'.$this->params->get('error_redirect').'" />';
+    }
+
     private function requestField()
     {
         return '<input type="hidden" name="_request" value="'.$this->params->get('request').'" />';
@@ -73,8 +82,8 @@ private function params(): array
                 return $params[$param] = $redirect;
             }
         })->filter()
-        ->values()
-        ->all();
+            ->values()
+            ->all();
     }
 
     /**
diff --git a/src/Tags/GuestEntriesTag.php b/src/Tags/GuestEntriesTag.php
index 02d24fb..ffa5356 100644
--- a/src/Tags/GuestEntriesTag.php
+++ b/src/Tags/GuestEntriesTag.php
@@ -97,4 +97,9 @@ public function hasErrors()
     {
         return session()->has('errors');
     }
+
+    public function success(): bool
+    {
+        return session()->get('guest-entries.success', false);
+    }
 }
diff --git a/tests/Http/Controllers/GuestEntryControllerTest.php b/tests/Http/Controllers/GuestEntryControllerTest.php
index 0fe4343..d9442e6 100644
--- a/tests/Http/Controllers/GuestEntryControllerTest.php
+++ b/tests/Http/Controllers/GuestEntryControllerTest.php
@@ -36,8 +36,7 @@
             'title' => 'This is great',
             'slug' => 'this-is-great',
         ])
-        ->assertRedirect()
-        ->assertSessionHas('success');
+        ->assertRedirect();
 
     $entry = Entry::all()->last();
 
@@ -65,6 +64,24 @@
     $this->assertSame($entry->slug(), 'this-is-fantastic');
 });
 
+it('can store entry when collection has title format', function () {
+    Collection::make('comments')->titleFormats(['default' => 'BLAH {{ name }}'])->save();
+
+    $this
+        ->post(route('statamic.guest-entries.store'), [
+            '_collection' => 'comments',
+            'name' => 'So, I was sitting there and somebody came up to me and I asked them something.',
+        ])
+        ->assertRedirect();
+
+    $entry = Entry::all()->last();
+
+    $this->assertNotNull($entry);
+    $this->assertSame($entry->collectionHandle(), 'comments');
+    $this->assertSame($entry->get('title'), 'BLAH So, I was sitting there and somebody came up to me and I asked them something.');
+    $this->assertSame($entry->slug(), 'blah-so-i-was-sitting-there-and-somebody-came-up-to-me-and-i-asked-them-something');
+});
+
 it('can store entry with custom form request', function () {
     Collection::make('comments')->save();
 
@@ -119,14 +136,14 @@
     Collection::make('comments')->save();
 
     $this
-            ->post(route('statamic.guest-entries.store'), [
-                '_collection' => 'comments',
-                '_redirect' => '/whatever',
-                '_error_redirect' => '/whatever-else',
-                'title' => 'This is great',
-                'slug' => 'this-is-great',
-            ])
-            ->assertRedirect();
+        ->post(route('statamic.guest-entries.store'), [
+            '_collection' => 'comments',
+            '_redirect' => '/whatever',
+            '_error_redirect' => '/whatever-else',
+            'title' => 'This is great',
+            'slug' => 'this-is-great',
+        ])
+        ->assertRedirect();
 
     $entry = Entry::all()->last();
 
@@ -449,60 +466,60 @@
     AssetContainer::make('assets')->disk('local')->save();
 
     Blueprint::make('comments')
-            ->setNamespace('collections.comments')
-            ->setContents([
-                'title' => 'Comments',
-                'sections' => [
-                    'main' => [
-                        'display' => 'main',
-                        'fields' => [
-                            [
-                                'handle' => 'title',
-                                'field' => [
-                                    'type' => 'text',
-                                ],
+        ->setNamespace('collections.comments')
+        ->setContents([
+            'title' => 'Comments',
+            'sections' => [
+                'main' => [
+                    'display' => 'main',
+                    'fields' => [
+                        [
+                            'handle' => 'title',
+                            'field' => [
+                                'type' => 'text',
                             ],
-                            [
-                                'handle' => 'slug',
-                                'field' => [
-                                    'type' => 'slug',
-                                ],
+                        ],
+                        [
+                            'handle' => 'slug',
+                            'field' => [
+                                'type' => 'slug',
                             ],
-                            [
-                                'handle' => 'attachments',
-                                'field' => [
-                                    'mode' => 'list',
-                                    'container' => 'assets',
-                                    'restrict' => false,
-                                    'allow_uploads' => true,
-                                    'show_filename' => true,
-                                    'display' => 'Attachment',
-                                    'type' => 'assets',
-                                    'icon' => 'assets',
-                                    'listable' => 'hidden',
-                                ],
+                        ],
+                        [
+                            'handle' => 'attachments',
+                            'field' => [
+                                'mode' => 'list',
+                                'container' => 'assets',
+                                'restrict' => false,
+                                'allow_uploads' => true,
+                                'show_filename' => true,
+                                'display' => 'Attachment',
+                                'type' => 'assets',
+                                'icon' => 'assets',
+                                'listable' => 'hidden',
                             ],
                         ],
                     ],
                 ],
-            ])
-            ->save();
+            ],
+        ])
+        ->save();
 
     Collection::make('comments')->save();
 
     $this->withoutExceptionHandling();
 
     $this
-            ->post(route('statamic.guest-entries.store'), [
-                '_collection' => 'comments',
-                'title' => 'This is great',
-                'slug' => 'this-is-great',
-                'attachments' => [
-                    UploadedFile::fake()->create('foobar.png'),
-                    UploadedFile::fake()->create('barfoo.jpg'),
-                ],
-            ])
-            ->assertRedirect();
+        ->post(route('statamic.guest-entries.store'), [
+            '_collection' => 'comments',
+            'title' => 'This is great',
+            'slug' => 'this-is-great',
+            'attachments' => [
+                UploadedFile::fake()->create('foobar.png'),
+                UploadedFile::fake()->create('barfoo.jpg'),
+            ],
+        ])
+        ->assertRedirect();
 
     $entry = Entry::all()->last();
 
@@ -987,8 +1004,7 @@
             '_id' => 'allo-mate-idee',
             'record_label' => 'Unknown',
         ])
-        ->assertRedirect()
-        ->assertSessionHas('success');
+        ->assertRedirect();
 
     $entry = Entry::find('allo-mate-idee');
 
@@ -999,6 +1015,36 @@
     $this->assertSame($entry->slug(), 'allo-mate');
 });
 
+it('can update entry if collection has title format', function () {
+    Collection::make('albums')->titleFormats(['default' => '{{ artist }} - {{ name }}'])->save();
+
+    Entry::make()
+        ->id('allo-mate-idee')
+        ->collection('albums')
+        ->slug('allo-mate')
+        ->data([
+            'title' => 'Guvna B - Allo Mate!',
+            'name' => 'Allo Mate!',
+            'artist' => 'Guvna B',
+        ])
+        ->save();
+
+    $this
+        ->post(route('statamic.guest-entries.update'), [
+            '_collection' => 'albums',
+            '_id' => 'allo-mate-idee',
+            'record_label' => 'Unknown',
+            'name' => 'Allo Mate',
+        ])
+        ->assertRedirect();
+
+    $entry = Entry::find('allo-mate-idee');
+
+    $this->assertNotNull($entry);
+    $this->assertSame($entry->collectionHandle(), 'albums');
+    $this->assertSame($entry->get('title'), 'Guvna B - Allo Mate');
+});
+
 it('can update entry with custom form request', function () {
     Collection::make('albums')->save();
 
@@ -1940,22 +1986,21 @@
     Collection::make('albums')->save();
 
     Entry::make()
-            ->id('allo-mate-idee')
-            ->collection('albums')
-            ->slug('allo-mate')
-            ->data([
-                'title' => 'Allo Mate!',
-                'artist' => 'Guvna B',
-            ])
-            ->save();
+        ->id('allo-mate-idee')
+        ->collection('albums')
+        ->slug('allo-mate')
+        ->data([
+            'title' => 'Allo Mate!',
+            'artist' => 'Guvna B',
+        ])
+        ->save();
 
     $this
         ->delete(route('statamic.guest-entries.destroy'), [
             '_collection' => 'albums',
             '_id' => 'allo-mate-idee',
         ])
-        ->assertRedirect()
-        ->assertSessionHas('success');
+        ->assertRedirect();
 
     $entry = Entry::find('allo-mate-idee');
 
diff --git a/tests/Tags/GuestEntriesTagTest.php b/tests/Tags/GuestEntriesTagTest.php
index e9ecf88..6c5ec2e 100644
--- a/tests/Tags/GuestEntriesTagTest.php
+++ b/tests/Tags/GuestEntriesTagTest.php
@@ -81,6 +81,24 @@
     $usage = $tag->create();
 })->throws(CollectionNotFoundException::class);
 
+it('returns create guest entry form with redirect and error_redirect hidden inputs', function () use (&$tag) {
+    Collection::make('guestbook')->save();
+
+    $tag->setParameters([
+        'collection' => 'guestbook',
+        'redirect' => '/thank-you',
+        'error_redirect' => '/error',
+    ]);
+
+    $usage = $tag->create();
+
+    assertStringContainsString('http://localhost/!/guest-entries/create', $usage);
+    assertStringContainsString('<input type="hidden" name="_token"', $usage);
+    assertStringContainsString('<input type="hidden" name="_collection" value="guestbook"', $usage);
+    assertStringContainsString('<input type="hidden" name="_redirect" value="/thank-you"', $usage);
+    assertStringContainsString('<input type="hidden" name="_error_redirect" value="/error"', $usage);
+});
+
 it('returns update guest entry form', function () use (&$tag) {
     Collection::make('guestbook')->save();
 
@@ -263,6 +281,33 @@
     assertStringContainsString('<textarea name="comment">Something can go here</textarea>', $usage);
 });
 
+it('returns update guest entry form with redirect and error_redirect hidden inputs', function () use (&$tag) {
+    Collection::make('guestbook')->save();
+
+    Entry::make()
+        ->collection('guestbook')
+        ->id('hello')
+        ->slug('hello')
+        ->data(['title' => 'Hello World'])
+        ->save();
+
+    $tag->setParameters([
+        'collection' => 'guestbook',
+        'id' => 'hello',
+        'redirect' => '/thank-you',
+        'error_redirect' => '/error',
+    ]);
+
+    $usage = $tag->update();
+
+    assertStringContainsString('http://localhost/!/guest-entries/update', $usage);
+    assertStringContainsString('<input type="hidden" name="_token"', $usage);
+    assertStringContainsString('<input type="hidden" name="_collection" value="guestbook"', $usage);
+    assertStringContainsString('<input type="hidden" name="_id" value="hello"', $usage);
+    assertStringContainsString('<input type="hidden" name="_redirect" value="/thank-you"', $usage);
+    assertStringContainsString('<input type="hidden" name="_error_redirect" value="/error"', $usage);
+});
+
 it('returns delete guest entry form', function () use (&$tag) {
     Collection::make('guestbook')->save();
 
@@ -420,3 +465,30 @@
     assertStringContainsString('<h2>Delete Guestbook Entry: Hello World</h2>', $usage);
     assertStringContainsString('<button type="submit">DELETE</button>', $usage);
 });
+
+it('returns delete guest entry form with redirect and error_redirect hidden inputs', function () use (&$tag) {
+    Collection::make('guestbook')->save();
+
+    Entry::make()
+        ->collection('guestbook')
+        ->id('hello')
+        ->slug('hello')
+        ->data(['title' => 'Hello World'])
+        ->save();
+
+    $tag->setParameters([
+        'collection' => 'guestbook',
+        'id' => 'hello',
+        'redirect' => '/thank-you',
+        'error_redirect' => '/error',
+    ]);
+
+    $usage = $tag->delete();
+
+    assertStringContainsString('http://localhost/!/guest-entries/delete', $usage);
+    assertStringContainsString('<input type="hidden" name="_token"', $usage);
+    assertStringContainsString('<input type="hidden" name="_collection" value="guestbook"', $usage);
+    assertStringContainsString('<input type="hidden" name="_id" value="hello"', $usage);
+    assertStringContainsString('<input type="hidden" name="_redirect" value="/thank-you"', $usage);
+    assertStringContainsString('<input type="hidden" name="_error_redirect" value="/error"', $usage);
+});