Laravel Mail Builder (dophp/laravel-mail-builder)

A modular, Outlook-bulletproof email building, auditing, and compilation engine for Laravel applications.

Requires PHP 8.3+ and Laravel 12 or 13. Maintained by doPHP.

Key Features

• 29 Modular Responsive Slots: Pre-built responsive components that collapse smoothly to 100% width on mobile devices, with Microsoft Outlook MSO conditional table compatibility.
• Universal Compilation Engine: Compile modular slots or structured EmailDocument instances into inlined responsive HTML (EmailSlotCompiler) or interactive AMP for Email (AmpEmailCompiler).
• Liquid-Style Personalization: Fast token interpolation supporting uppercase, lowercase, capitalize, date formatting, currency, number, pluralize, default values, and inline conditionals ({% if condition %}...{% else %}...{% endif %}).
• Deliverability & Spam Auditor: Automatic pre-flight auditing calculating spam trigger scores, missing unsubscribe headers, image-to-text ratios, dark mode color inversion contrast, and live DNS deliverability checks (SPF, DMARC, BIMI).
• Multi-Device Screenshot Simulation: Adapter interface for testing email rendering across Outlook Windows (120 DPI), Apple Mail iOS 17 Dark Mode, macOS Sonoma, and Gmail Android.
• Theme & Typography Engine: Built-in design system presets (Corporate Slate, Midnight Indigo, Emerald SaaS, Warm Sunset, Monochrome Minimal) with automatic Google Fonts web font imports and Outlook fallback font stacks.
• Bidirectional Ingestion: Export templates to HTML, Plain Text, MJML, or ZIP packages—and reverse-parse external raw HTML or standard MJML into native modular slots.
• WCAG 2.1 AA Contrast Auditor: Exact mathematical relative luminance algorithm evaluating text and button contrast compliance.
• Enterprise Transport: Send via TemplateMailable with RFC 8058 1-click unsubscribe headers, custom attachments, and automatic CID (Content-ID) inline image embedding.
• Filament Visual Builder: Full Filament builder schema component with audience targeting and conditional visibility rules.

Installation

composer require dophp/laravel-mail-builder

Publish configuration and views (optional):

php artisan vendor:publish --tag=mail-builder-config
php artisan vendor:publish --tag=mail-builder-views

Configuration

config/mail-builder.php sets the default layout theme (width, fonts, colors) and the footer identity used when a slot doesn't provide one:

MAIL_BUILDER_COMPANY_NAME="Acme Inc."   # defaults to APP_NAME
MAIL_BUILDER_ADDRESS="123 Example St, Springfield"

CAN-SPAM and similar laws require a physical mailing address in marketing email, so set MAIL_BUILDER_ADDRESS or pass address to each footer slot.

Quick Start

1. Building and Compiling an Email

use DoPHP\MailBuilder\MailBuilder;
use DoPHP\MailBuilder\Enums\SlotType;

// Fluent EmailDocument API
$doc = MailBuilder::document(
    subject: 'Welcome to the Platform, {{ contact.first_name }}!',
    previewText: 'Get started with your new account in 3 easy steps.'
);

$doc->append(SlotType::Header, [
    'brand_name' => 'Acme Corp',
    'logo_url' => 'https://example.com/logo.png',
]);

$doc->append(SlotType::Hero, [
    'title' => 'Accelerate Your Workflow',
    'subtitle' => 'Everything you need to deliver world-class projects.',
    'button_text' => 'Get Started',
    'button_url' => 'https://example.com/onboarding',
]);

$doc->append(SlotType::TwoColumn, [
    'left_title' => 'Cloud Infrastructure',
    'left_body' => 'Deploy high-availability services across 30+ edge regions.',
    'right_title' => 'RevOps Analytics',
    'right_body' => 'Real-time pipeline tracking and automated revenue forecasting.',
    'reverse_stack_on_mobile' => true,
]);

$doc->append(SlotType::AppBadges, [
    'heading' => 'Download Our Mobile App',
    'app_store_url' => 'https://apps.apple.com/app/acme',
    'google_play_url' => 'https://play.google.com/store/apps/acme',
]);

$doc->append(SlotType::Footer, [
    'company_name' => 'Acme Inc.',
    'address' => '548 Market St, San Francisco, CA',
    'unsubscribe_url' => '{{ unsubscribe_url }}',
]);

// Compile to responsive inlined HTML
$html = MailBuilder::compile($doc);

// Extract plain text fallback
$plainText = MailBuilder::plainText($doc);

2. Personalization & Merge Tags

Personalization supports dot-notation object paths, Liquid filters, and inline conditionals:

$template = "Hello {{ contact.first_name | capitalize }}! Member since {{ contact.created_at | date: 'F Y' }}. Balance: {{ account.balance | currency: 'USD' }}. {% if contact.is_vip %}Your VIP bonus is ready.{% else %}Upgrade today.{% endif %}";

$interpolated = MailBuilder::interpolate($template, [
    'contact' => [
        'first_name' => 'alexandra',
        'created_at' => '2026-03-15 10:00:00',
        'is_vip' => true,
    ],
    'account' => [
        'balance' => 1250.00,
    ],
]);

Built-in tags are {{unsubscribe_url}}, {{current_year}}, and {{web_view_url}}. Register your application's own tags so they appear in the Filament builder's tag picker and in previews:

use DoPHP\MailBuilder\MergeTags\MergeTagRegistry;

// In a service provider's register() method
$this->callAfterResolving(MergeTagRegistry::class, function (MergeTagRegistry $registry): void {
    $registry->register('Customer', [
        '{{customer.first_name}}' => 'Customer first name',
        '{{customer.plan}}' => 'Subscription plan',
    ], [
        // Sample values used when previewing templates
        'customer' => ['first_name' => 'Alex', 'plan' => 'Pro'],
    ]);
});

Available Filters:

• capitalize, title, lower, upper, trim
• date: 'Format' (PHP date() formatting)
• currency: 'USD'
• number: 2 (decimal places)
• pluralize: 'item', 'items'
• truncate: 50
• default: 'fallback value'

3. Ingestion (HTML & MJML Import)

Import external templates into editable modular slots:

// Ingest raw HTML
$docFromHtml = MailBuilder::importHtml($rawHtml, 'Imported Newsletter');

// Ingest standard MJML
$docFromMjml = MailBuilder::importMjml($mjmlCode, 'Imported Campaign');

// Compile imported documents directly
$compiledHtml = MailBuilder::compile($docFromMjml);

4. Deliverability, Performance & Accessibility Audits

// 1. Run Pre-flight Deliverability & Spam Audit
$audit = MailBuilder::audit($html);
if (! $audit->passes) {
    // Inspect $audit->critical_issues, $audit->warnings, and $audit->spam_score
}

// 2. WCAG 2.1 AA/AAA Color Contrast Audit
$contrast = MailBuilder::wcagContrast('#2563eb', '#ffffff');
// Returns: ['ratio' => 4.56, 'aa_normal' => true, 'rating' => 'AA']

$themeAudit = MailBuilder::auditContrast($themeArray);

// 3. Render Performance Benchmark
$benchmark = MailBuilder::benchmarkRender($html);
// Returns: dom_nodes_count, nested_table_depth, 3G/4G/5G download times

// 4. Sender Domain DNS Validation
$dns = MailBuilder::validateDns('yourdomain.com');
// Checks: SPF, DMARC (p=reject/quarantine), and BIMI

5. Sending Emails via TemplateMailable

use DoPHP\MailBuilder\Mail\TemplateMailable;
use Illuminate\Support\Facades\Mail;

Mail::to('user@example.com')->send(
    new TemplateMailable(
        template: $doc,
        data: [
            'contact' => ['first_name' => 'Sarah'],
            'unsubscribe_url' => 'https://example.com/unsubscribe/token',
        ],
        subjectLine: 'Exclusive Offer for {{ contact.first_name }}',
        embedCidImages: true // Embeds local & base64 images as MIME CID parts
    )
);

6. Filament Visual Builder Integration

Requires filament/forms ^5.0. To integrate the modular slot builder into any Filament Resource:

use DoPHP\MailBuilder\Filament\Components\EmailSlotBuilder;

public static function form(Schema $schema): Schema
{
    return $schema->components([
        EmailSlotBuilder::make('slots'),
    ]);
}

Supported Slot Types (29 Total)

Testing

composer install
composer test      # Pest, via Orchestra Testbench
composer analyse   # PHPStan level 8 with Larastan

License

The MIT License (MIT). See LICENSE.md.