diff --git a/utils/.gitignore b/utils/.gitignore
new file mode 100644
index 0000000..7aa99c1
--- /dev/null
+++ b/utils/.gitignore
@@ -0,0 +1,2 @@
+vendor
+config.php
diff --git a/utils/README.md b/utils/README.md
new file mode 100644
index 0000000..ba13171
--- /dev/null
+++ b/utils/README.md
@@ -0,0 +1,8 @@
+# Utils
+## Send emails
+To send emails, run `php sendEmails.php < users.csv`, where `users.csv` has a
+form similar to the `sample.csv` file.
+
+Before you do that, you should copy `config.default.php` to `config.php` and
+set up the Mailgun API keys. You might also have to change the template ID in
+the `sendEmails.php` file.
diff --git a/utils/composer.json b/utils/composer.json
new file mode 100644
index 0000000..fe40b60
--- /dev/null
+++ b/utils/composer.json
@@ -0,0 +1,5 @@
+{
+    "require": {
+        "mailjet/mailjet-apiv3-php": "^1.5"
+    }
+}
diff --git a/utils/composer.lock b/utils/composer.lock
new file mode 100644
index 0000000..04a1f86
--- /dev/null
+++ b/utils/composer.lock
@@ -0,0 +1,678 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "673cae3065e4f8b691bba505f4ef2aad",
+    "packages": [
+        {
+            "name": "guzzlehttp/guzzle",
+            "version": "7.5.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/guzzle.git",
+                "reference": "b50a2a1251152e43f6a37f0fa053e730a67d25ba"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/b50a2a1251152e43f6a37f0fa053e730a67d25ba",
+                "reference": "b50a2a1251152e43f6a37f0fa053e730a67d25ba",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "guzzlehttp/promises": "^1.5",
+                "guzzlehttp/psr7": "^1.9 || ^2.4",
+                "php": "^7.2.5 || ^8.0",
+                "psr/http-client": "^1.0",
+                "symfony/deprecation-contracts": "^2.2 || ^3.0"
+            },
+            "provide": {
+                "psr/http-client-implementation": "1.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.1",
+                "ext-curl": "*",
+                "php-http/client-integration-tests": "^3.0",
+                "phpunit/phpunit": "^8.5.29 || ^9.5.23",
+                "psr/log": "^1.1 || ^2.0 || ^3.0"
+            },
+            "suggest": {
+                "ext-curl": "Required for CURL handler support",
+                "ext-intl": "Required for Internationalized Domain Name (IDN) support",
+                "psr/log": "Required for using the Log middleware"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "7.5-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/functions_include.php"
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Jeremy Lindblom",
+                    "email": "jeremeamia@gmail.com",
+                    "homepage": "https://github.com/jeremeamia"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                }
+            ],
+            "description": "Guzzle is a PHP HTTP client library",
+            "keywords": [
+                "client",
+                "curl",
+                "framework",
+                "http",
+                "http client",
+                "psr-18",
+                "psr-7",
+                "rest",
+                "web service"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/guzzle/issues",
+                "source": "https://github.com/guzzle/guzzle/tree/7.5.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/guzzle",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-08-28T15:39:27+00:00"
+        },
+        {
+            "name": "guzzlehttp/promises",
+            "version": "1.5.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/promises.git",
+                "reference": "b94b2807d85443f9719887892882d0329d1e2598"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/b94b2807d85443f9719887892882d0329d1e2598",
+                "reference": "b94b2807d85443f9719887892882d0329d1e2598",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5"
+            },
+            "require-dev": {
+                "symfony/phpunit-bridge": "^4.4 || ^5.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.5-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/functions_include.php"
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\Promise\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                }
+            ],
+            "description": "Guzzle promises library",
+            "keywords": [
+                "promise"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/promises/issues",
+                "source": "https://github.com/guzzle/promises/tree/1.5.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/promises",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-08-28T14:55:35+00:00"
+        },
+        {
+            "name": "guzzlehttp/psr7",
+            "version": "2.4.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/psr7.git",
+                "reference": "67c26b443f348a51926030c83481b85718457d3d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/67c26b443f348a51926030c83481b85718457d3d",
+                "reference": "67c26b443f348a51926030c83481b85718457d3d",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0",
+                "psr/http-factory": "^1.0",
+                "psr/http-message": "^1.0",
+                "ralouphie/getallheaders": "^3.0"
+            },
+            "provide": {
+                "psr/http-factory-implementation": "1.0",
+                "psr/http-message-implementation": "1.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.1",
+                "http-interop/http-factory-tests": "^0.9",
+                "phpunit/phpunit": "^8.5.29 || ^9.5.23"
+            },
+            "suggest": {
+                "laminas/laminas-httphandlerrunner": "Emit PSR-7 responses"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "2.4-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Psr7\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://sagikazarmark.hu"
+                }
+            ],
+            "description": "PSR-7 message implementation that also provides common utility methods",
+            "keywords": [
+                "http",
+                "message",
+                "psr-7",
+                "request",
+                "response",
+                "stream",
+                "uri",
+                "url"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/psr7/issues",
+                "source": "https://github.com/guzzle/psr7/tree/2.4.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/psr7",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-10-26T14:07:24+00:00"
+        },
+        {
+            "name": "mailjet/mailjet-apiv3-php",
+            "version": "v1.5.8",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/mailjet/mailjet-apiv3-php.git",
+                "reference": "747518ce0eebf64d27e9903441a255c85472a139"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/mailjet/mailjet-apiv3-php/zipball/747518ce0eebf64d27e9903441a255c85472a139",
+                "reference": "747518ce0eebf64d27e9903441a255c85472a139",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "guzzlehttp/guzzle": "^7.4.4",
+                "php": "^7.2|^8.0",
+                "psr/http-client": "^1.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "^1.4",
+                "php-coveralls/php-coveralls": "^2.0",
+                "phpunit/phpunit": "^8|^9"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Mailjet": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mailjet",
+                    "email": "dev@mailjet.com",
+                    "homepage": "https://dev.mailjet.com"
+                }
+            ],
+            "description": "PHP wrapper for the Mailjet API",
+            "homepage": "https://github.com/mailjet/mailjet-apiv3-php/",
+            "keywords": [
+                "Mailjet",
+                "api",
+                "email",
+                "php",
+                "v3"
+            ],
+            "support": {
+                "issues": "https://github.com/mailjet/mailjet-apiv3-php/issues",
+                "source": "https://github.com/mailjet/mailjet-apiv3-php/tree/v1.5.8"
+            },
+            "time": "2022-10-15T16:24:08+00:00"
+        },
+        {
+            "name": "psr/http-client",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-client.git",
+                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-client/zipball/2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
+                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0 || ^8.0",
+                "psr/http-message": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP clients",
+            "homepage": "https://github.com/php-fig/http-client",
+            "keywords": [
+                "http",
+                "http-client",
+                "psr",
+                "psr-18"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-client/tree/master"
+            },
+            "time": "2020-06-29T06:28:15+00:00"
+        },
+        {
+            "name": "psr/http-factory",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-factory.git",
+                "reference": "12ac7fcd07e5b077433f5f2bee95b3a771bf61be"
+            },
+            "dist": {
+                "type": "zip",
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+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.0.0",
+                "psr/http-message": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interfaces for PSR-7 HTTP message factories",
+            "keywords": [
+                "factory",
+                "http",
+                "message",
+                "psr",
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+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-factory/tree/master"
+            },
+            "time": "2019-04-30T12:38:16+00:00"
+        },
+        {
+            "name": "psr/http-message",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+            },
+            "dist": {
+                "type": "zip",
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+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
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+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
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+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-message/tree/master"
+            },
+            "time": "2016-08-06T14:39:51+00:00"
+        },
+        {
+            "name": "ralouphie/getallheaders",
+            "version": "3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/getallheaders.git",
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+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "require-dev": {
+                "php-coveralls/php-coveralls": "^2.1",
+                "phpunit/phpunit": "^5 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/getallheaders.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "A polyfill for getallheaders.",
+            "support": {
+                "issues": "https://github.com/ralouphie/getallheaders/issues",
+                "source": "https://github.com/ralouphie/getallheaders/tree/develop"
+            },
+            "time": "2019-03-08T08:55:37+00:00"
+        },
+        {
+            "name": "symfony/deprecation-contracts",
+            "version": "v3.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/deprecation-contracts.git",
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+                "thanks": {
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+                }
+            },
+            "autoload": {
+                "files": [
+                    "function.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "A generic function and convention to trigger deprecation notices",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/deprecation-contracts/tree/v3.1.1"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-02-25T11:15:52+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
+}
diff --git a/utils/config.default.php b/utils/config.default.php
new file mode 100644
index 0000000..09bf517
--- /dev/null
+++ b/utils/config.default.php
@@ -0,0 +1,4 @@
+<?php
+// Copy this file to config.php and fill in the details.
+$API_CLIENT = '';
+$API_SECRET = '';
diff --git a/utils/sample.csv b/utils/sample.csv
new file mode 100644
index 0000000..831587f
--- /dev/null
+++ b/utils/sample.csv
@@ -0,0 +1,3 @@
+nom,curs,grau,contrasenya,correu
+Persona 1,3,1,123456,persona1@example.com
+Persona 2,1,4,123456,persona2@example.com
diff --git a/utils/sendEmails.php b/utils/sendEmails.php
new file mode 100644
index 0000000..f93db90
--- /dev/null
+++ b/utils/sendEmails.php
@@ -0,0 +1,49 @@
+<?php
+	$inscrits = array_map('str_getcsv', file('php://stdin'));
+	array_shift($inscrits);
+
+	require 'config.php';
+	require 'vendor/autoload.php';
+	use \Mailjet\Resources;
+	$mj = new \Mailjet\Client($API_CLIENT, $API_SECRET, true, ['version' => 'v3.1']);
+
+	$messages = [];
+	foreach ($inscrits as $inscrit) {
+		$nom = $inscrit[0];
+		$pass = $inscrit[3];
+		$email = $inscrit[4];
+		$messages[] = [
+			'From' => [
+				'Email' => "vuit@operacio236.ml",
+				'Name' => "Octavi de Planta 8",
+			],
+			'To' => [
+				[
+					'Name' => $nom,
+					'Email' => $email,
+				]
+			],
+			'TemplateID' => 4405516,
+			'TemplateLanguage' => true,
+			'Subject' => "Arriba la Carrot Cake!",
+			'Variables' => [
+				'name' => $nom,
+				'pass' => $pass,
+			],
+			'TrackOpens' => 'disabled',
+			'TrackClicks' => 'disabled',
+			'CustomCampaign' => 'carrotcake',
+		];
+	}
+
+	$body = [
+		'Messages' => $messages
+	];
+	$response = $mj->post(Resources::$Email, ['body' => $body]);
+	if ($response->success()) {
+		echo json_encode($response->getData());
+	} else {
+		echo "ERROR:".PHP_EOL;
+		var_dump($response->getData());
+	}
+?>