diff --git a/app/Circle.php b/app/Circle.php
index fdce9fcd0..e4b6d3087 100644
--- a/app/Circle.php
+++ b/app/Circle.php
@@ -7,6 +7,7 @@ use Illuminate\Database\Eloquent\Model;
 class Circle extends Model
 {
     protected $fillable = [
+        'profile_id',
     	'name',
     	'description',
     	'bcc',
diff --git a/app/Http/Controllers/UserInviteController.php b/app/Http/Controllers/UserInviteController.php
new file mode 100644
index 000000000..c9f83301f
--- /dev/null
+++ b/app/Http/Controllers/UserInviteController.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Auth;
+use App\UserInvite;
+use Illuminate\Support\Str;
+
+class UserInviteController extends Controller
+{
+	public function __construct()
+	{
+		abort_if(!config('pixelfed.user_invites.enabled'), 404);
+	}
+
+	public function create(Request $request)
+	{
+		abort_unless(Auth::check(), 403);
+		return view('settings.invites.create');
+	}
+
+	public function show(Request $request)
+	{
+		abort_unless(Auth::check(), 403);
+		$invites = UserInvite::whereUserId(Auth::id())->paginate(10);
+		$limit = config('pixelfed.user_invites.limit.total');
+		$used = UserInvite::whereUserId(Auth::id())->count();
+		return view('settings.invites.home', compact('invites', 'limit', 'used'));
+	}
+
+	public function store(Request $request)
+	{
+		abort_unless(Auth::check(), 403);
+		$this->validate($request, [
+			'email' => 'required|email|unique:users|unique:user_invites',
+			'message' => 'nullable|string|max:500',
+			'tos'	=> 'required|accepted'
+		]);
+
+		$invite = new UserInvite;
+		$invite->user_id = Auth::id();
+		$invite->profile_id = Auth::user()->profile->id;
+		$invite->email = $request->input('email');
+		$invite->message = $request->input('message');
+		$invite->key = (string) Str::uuid();
+		$invite->token = str_random(32);
+		$invite->save();
+
+		return redirect(route('settings.invites'));
+	}
+}
diff --git a/app/Transformer/Api/StatusTransformer.php b/app/Transformer/Api/StatusTransformer.php
index 3710aa1ff..16b1a8de0 100644
--- a/app/Transformer/Api/StatusTransformer.php
+++ b/app/Transformer/Api/StatusTransformer.php
@@ -17,35 +17,33 @@ class StatusTransformer extends Fractal\TransformerAbstract
 
     public function transform(Status $status)
     {
-        return Cache::remember('transform:status:'. $status->url(), 60, function() use($status) {
-            return [
-                'id'                        => (string) $status->id,
-                'uri'                       => $status->url(),
-                'url'                       => $status->url(),
-                'in_reply_to_id'            => $status->in_reply_to_id,
-                'in_reply_to_account_id'    => $status->in_reply_to_profile_id,
-                'reblog'                    => $status->reblog_of_id || $status->in_reply_to_id ? $this->transform($status->parent()) : null,
-                'content'                   => $status->rendered ?? $status->caption,
-                'created_at'                => $status->created_at->format('c'),
-                'emojis'                    => [],
-                'reblogs_count'             => $status->shares()->count(),
-                'favourites_count'          => $status->likes()->count(),
-                'reblogged'                 => $status->shared(),
-                'favourited'                => $status->liked(),
-                'muted'                     => null,
-                'sensitive'                 => (bool) $status->is_nsfw,
-                'spoiler_text'              => $status->cw_summary,
-                'visibility'                => $status->visibility,
-                'application'               => [
-                    'name'      => 'web',
-                    'website'   => null
-                 ],
-                'language'                  => null,
-                'pinned'                    => null,
+        return [
+            'id'                        => (string) $status->id,
+            'uri'                       => $status->url(),
+            'url'                       => $status->url(),
+            'in_reply_to_id'            => $status->in_reply_to_id,
+            'in_reply_to_account_id'    => $status->in_reply_to_profile_id,
+            'reblog'                    => $status->reblog_of_id || $status->in_reply_to_id ? $this->transform($status->parent()) : null,
+            'content'                   => $status->rendered ?? $status->caption,
+            'created_at'                => $status->created_at->format('c'),
+            'emojis'                    => [],
+            'reblogs_count'             => $status->shares()->count(),
+            'favourites_count'          => $status->likes()->count(),
+            'reblogged'                 => $status->shared(),
+            'favourited'                => $status->liked(),
+            'muted'                     => null,
+            'sensitive'                 => (bool) $status->is_nsfw,
+            'spoiler_text'              => $status->cw_summary,
+            'visibility'                => $status->visibility,
+            'application'               => [
+                'name'      => 'web',
+                'website'   => null
+             ],
+            'language'                  => null,
+            'pinned'                    => null,
 
-                'pf_type'          => $status->type ?? $status->setType(),
-            ];
-        });
+            'pf_type'          => $status->type ?? $status->setType(),
+        ];
     }
 
     public function includeAccount(Status $status)
diff --git a/app/UserInvite.php b/app/UserInvite.php
new file mode 100644
index 000000000..c8761a775
--- /dev/null
+++ b/app/UserInvite.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class UserInvite extends Model
+{
+    public function url()
+    {
+    	$path = '/i/invite/code';
+    	$url = url($path, [$this->key, $this->token]);
+    	return $url;
+    }
+}
diff --git a/config/hashing.php b/config/hashing.php
index 6ea081a61..81cd9df0b 100644
--- a/config/hashing.php
+++ b/config/hashing.php
@@ -29,7 +29,7 @@ return [
     */
 
     'bcrypt' => [
-        'rounds' => 10,
+        'rounds' => env('BCRYPT_COST', 10),
     ],
 
     /*
@@ -44,9 +44,9 @@ return [
     */
 
     'argon' => [
-        'memory'  => 1024,
-        'threads' => 2,
-        'time'    => 2,
+        'memory'  => env('ARGON_MEM', 1024),
+        'threads' => env('ARGON_THREADS', 2),
+        'time'    => env('ARGON_TIME', 2),
     ],
 
 ];
diff --git a/database/migrations/2019_02_15_033323_create_user_invites_table.php b/database/migrations/2019_02_15_033323_create_user_invites_table.php
new file mode 100644
index 000000000..62bfbd5b5
--- /dev/null
+++ b/database/migrations/2019_02_15_033323_create_user_invites_table.php
@@ -0,0 +1,39 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateUserInvitesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('user_invites', function (Blueprint $table) {
+            $table->bigIncrements('id');
+            $table->bigInteger('user_id')->unsigned()->index();
+            $table->bigInteger('profile_id')->unsigned()->index();
+            $table->string('email')->unique()->index();
+            $table->text('message')->nullable();
+            $table->string('key');
+            $table->string('token');
+            $table->timestamp('valid_until')->nullable();
+            $table->timestamp('used_at')->nullable()->index();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('user_invites');
+    }
+}