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Resend Email

CommunicationsBuilt by cAND/or REST API · API Key Setup: ~5 minutes Includes Client Management

Transactional email for Helix — invoice delivery, ticket notifications, appointment confirmations, and contract e-sign requests. Bring your own Resend API key. Each brand can have its own key. Connect at client level to send on behalf of that client, using their own domain and sending reputation.

Your Organization

Connect Helix to your own Resend Email account. Applies to all users in your MSP — calendar sync, notifications, and staff tools.

Required Credentials

2 fields

API Key

RequiredSecret

Found in Resend Dashboard → API Keys → Create API Key. Use a dedicated key per Helix brand for easy rotation.

Format:re_••••••••••••••••

Enables →

transactional_emaildelivery_webhooks

Default Reply-To Address

Optional

Optional. Email address where client replies are directed. Configurable per brand in Helix Settings → Branding.

Format:service@yourdomain.com

Enables →

transactional_email

Data Flow

2 capabilities

Helix initiates

Vendor notifies Helix

Both directions

// Helix → VendorHelix initiates

Transactional Email

Helix → Vendor

Send invoices, ticket updates, appointment confirmations, and contract requests

ProtocolREST API call

TriggerInvoice sent, ticket created or updated, appointment confirmed, contract ready for signature

AuthAPI Key

You configureYou must verify your sending domain in Resend Dashboard → Domains before emails will be delivered. Resend provides DNS records to add to your domain registrar.

Helix doesEach Helix brand can have its own Resend API key and reply-to address. Configure in App Marketplace → Resend → Brands.

// Vendor → HelixVendor notifies Helix

Delivery Webhooks

Vendor → Helix

Track email delivery, opens, and bounces back into Helix

ProtocolWebhook — Resend posts delivery events to Helix

TriggerEmail delivered, opened, bounced, or spam-reported

AuthWebhook signing secret (auto-generated by Helix on connection)

You configureIn Resend Dashboard → Webhooks, add your Helix webhook endpoint. Select events: email.delivered, email.bounced, email.complained. Helix displays the endpoint URL in App Marketplace → Resend → Setup.

Helix doesBounce events flag the contact email address in Helix. Delivery events are logged on the relevant invoice or ticket.

Client Management

MSP Feature

Connect your clients' Resend Email tenants to manage them directly from their Helix client record — without opening the vendor's admin console. Each client gets their own separate connection.

Ready to connect?

Log into Helix and open App Marketplace to configure this integration.

Open Helix