Email and mailing

Resend, Postmark, Nodemailer, and Plunk adapters, React Email templates, i18n, and local preview.

Providers

Configure one transactional provider via simulacrum.config.ts and environment variables:

• Resend
• Postmark
• Nodemailer (SMTP)
• Plunk

React Email

Templates live as React components with shared layout and Tailwind-friendly styling. Render to HTML before sending through the active adapter.

Internationalization

Localized templates select copy by locale; keep keys parallel across language files used by next-intl.

Preview

Run the React Email dev preview (email dev script when present) to iterate on templates quickly.

Related guides

• Internationalization
• Notifications