Resend - email delivery, audiences and operations

[maximus]

Hi everyone,

I’m releasing Resend, a ProcessWire module for transactional email, audience management and delivery operations through the Resend API.

It works as a regular ProcessWire WireMail provider for everyday site email, while also exposing Resend-specific domains, contacts, segments, topics, templates, broadcasts, webhooks and delivery diagnostics inside the ProcessWire admin.

What Resend does

• Sends ProcessWire mail through the Resend API as a WireMail provider.
• Supports transactional and batch sends, scheduling, cancellation, idempotency keys and tags.
• Manages sending domains and provides DNS setup guidance for SPF, MX, TXT and CNAME records.
• Manages contacts, segments, contact properties and topic subscriptions.
• Creates, edits, publishes and duplicates templates.
• Creates, edits, sends and schedules broadcasts.
• Receives and verifies Resend webhooks at /resend-webhook/.
• Stores webhook events locally for inspection and site automation.
• Lists sent and received email, attachments, API logs and delivery signals.
• Includes safe simulator sends using resend.dev recipients.
• Encrypts API keys and webhook secrets in a dedicated settings table.
• Bundles ProcessWire language files for English, French, German and Spanish.
• Includes a CLI for diagnostics and scripted operations.

Normal ProcessWire mail API

Existing site code can continue to use wireMail():

$mail = wireMail();
$mail->to('person@example.com')
    ->from('Site <hello@example.com>')
    ->subject('Thanks for your request')
    ->bodyHTML('<p>We received your request.</p>')
    ->send();

Resend-specific options are available when needed:

$mail = wireMail();
$mail->to('person@example.com')
    ->subject('Welcome')
    ->bodyHTML('<p>Hello</p>');

$mail->scheduledAt('in 1 hour');
$mail->addTag('source', 'website');
$mail->idempotencyKey('welcome-' . $page->id);
$mail->send();

Modules that discover providers by a WireMail* class name can select the included WireMail Resend compatibility module.

Requirements

• ProcessWire 3.0.184 or newer
• PHP 8.1 or newer
• A Resend account
• A verified sending domain for production email

Installation

1. Copy the Resend directory to /site/modules/Resend/.
2. Refresh modules in the ProcessWire admin.
3. Install Resend; ProcessResend, ResendWebhooks and WireMailResend are installed automatically.
4. Add the Resend API key and default sender in module settings.
5. Open Setup → Resend and add or verify a sending domain.
6. Use the simulator test screen before sending to real recipients.

Screenshots

 

Links

• GitHub: https://github.com/mxmsmnv/Resend
• Release 1.0.1: https://github.com/mxmsmnv/Resend/releases/tag/v1.0.1
• Documentation: https://github.com/mxmsmnv/Resend/blob/main/DOCUMENTATION.md
• Issues and support: https://github.com/mxmsmnv/Resend/issues

Feedback about WireMail compatibility, delivery workflows and the admin experience is welcome.