Overview

Plainform uses a dual email system: Resend for transactional emails and Mailchimp for newsletter management. This combination provides reliable email delivery with professional templates and audience management.

Email Services

Resend (Transactional Emails)

Resend handles automated, one-to-one emails triggered by user actions:

• Order confirmations and receipts
• Welcome emails and onboarding
• Notifications and alerts
• Custom transactional emails

Resend is configured in lib/resend/resend.ts and provides:

• High deliverability rates
• React-based email templates
• Simple API integration
• DNS configuration for custom domains

Mailchimp (Newsletter Management)

Mailchimp manages marketing emails and subscriber lists:

• Newsletter subscriptions
• Marketing campaigns
• Audience segmentation
• Email analytics

Mailchimp is integrated via API in app/api/resend/newsletter/route.ts and provides:

• Subscriber list management
• Campaign creation and scheduling
• Email templates and design tools
• Analytics and reporting

Key Features

• Transactional Emails: Send automated emails using Resend's API
• Newsletter Subscriptions: Manage subscribers with Mailchimp audiences
• Email Templates: Create React-based templates for Resend emails
• DNS Setup: Configure domain settings for email deliverability
• Rate Limiting: Protect newsletter signup endpoint from abuse
• Environment Validation: All API keys validated by t3-env

Architecture

User Action
    ↓
Transactional Email → Resend API → User Inbox
Newsletter Signup → Mailchimp API → Subscriber List

Email templates are stored in emails/ folder and use React components for Resend emails.

Next Steps

• Setup and Configuration - Configure Resend and Mailchimp
• Usage and Integration - Send emails and manage subscribers
• Troubleshooting - Common issues and solutions