Package Exports

@constructive-io/postmaster
@constructive-io/postmaster/esm/index.js
@constructive-io/postmaster/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@constructive-io/postmaster) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

@constructive-io/postmaster

Mailgun email sender for Constructive services

This package exposes a send helper with the same call shape used by simple-smtp-server (e.g. { to, subject, html, text }).

Installation

npm install @constructive-io/postmaster

Usage

import { send } from '@constructive-io/postmaster';

await send({
  to: 'user@example.com',
  subject: 'Hello',
  html: '<p>Hello World</p>'
});

Environment Variables

Variable	Description	Required
`MAILGUN_KEY`	Mailgun API key	Yes
`MAILGUN_DOMAIN`	Mailgun domain (e.g., `mg.example.com`)	Yes
`MAILGUN_FROM`	Default sender email address	No
`MAILGUN_REPLY`	Default reply-to email address	No
`MAILGUN_DEV_EMAIL`	Development email redirect (all emails sent to this address with original recipient encoded)	No

Development Email Redirect

When MAILGUN_DEV_EMAIL is set, all emails are redirected to that address with the original recipient encoded in the local part. For example, if MAILGUN_DEV_EMAIL=dev@example.com and you send to user@domain.com, the email will be sent to dev+user_at_domain.com@example.com.

API

`send(options, mailgunOverrides?)`

Send an email via Mailgun.

Parameters:

options.to - Recipient email address(es)
options.subject - Email subject
options.html - HTML body (required if no text)
options.text - Plain text body (required if no html)
options.from - Sender email (defaults to MAILGUN_FROM)
options.replyTo - Reply-to address (defaults to MAILGUN_REPLY)
mailgunOverrides - Optional overrides for Mailgun configuration

`resetClient()`

Reset the cached Mailgun client. Useful for testing or when configuration changes.

Education and Tutorials

🚀 Quickstart: Getting Up and Running Get started with modular databases in minutes. Install prerequisites and deploy your first module.
📦 Modular PostgreSQL Development with Database Packages Learn to organize PostgreSQL projects with pgpm workspaces and reusable database modules.
✏️ Authoring Database Changes Master the workflow for adding, organizing, and managing database changes with pgpm.
🧪 End-to-End PostgreSQL Testing with TypeScript Master end-to-end PostgreSQL testing with ephemeral databases, RLS testing, and CI/CD automation.
⚡ Supabase Testing Use TypeScript-first tools to test Supabase projects with realistic RLS, policies, and auth contexts.
💧 Drizzle ORM Testing Run full-stack tests with Drizzle ORM, including database setup, teardown, and RLS enforcement.
🔧 Troubleshooting Common issues and solutions for pgpm, PostgreSQL, and testing.

📦 Package Management

pgpm: 🖥️ PostgreSQL Package Manager for modular Postgres development. Works with database workspaces, scaffolding, migrations, seeding, and installing database packages.

🧪 Testing

pgsql-test: 📊 Isolated testing environments with per-test transaction rollbacks—ideal for integration tests, complex migrations, and RLS simulation.
pgsql-seed: 🌱 PostgreSQL seeding utilities for CSV, JSON, SQL data loading, and pgpm deployment.
supabase-test: 🧪 Supabase-native test harness preconfigured for the local Supabase stack—per-test rollbacks, JWT/role context helpers, and CI/GitHub Actions ready.
graphile-test: 🔐 Authentication mocking for Graphile-focused test helpers and emulating row-level security contexts.
pg-query-context: 🔒 Session context injection to add session-local context (e.g., SET LOCAL) into queries—ideal for setting role, jwt.claims, and other session settings.

🧠 Parsing & AST

pgsql-parser: 🔄 SQL conversion engine that interprets and converts PostgreSQL syntax.
libpg-query-node: 🌉 Node.js bindings for libpg_query, converting SQL into parse trees.
pg-proto-parser: 📦 Protobuf parser for parsing PostgreSQL Protocol Buffers definitions to generate TypeScript interfaces, utility functions, and JSON mappings for enums.
@pgsql/enums: 🏷️ TypeScript enums for PostgreSQL AST for safe and ergonomic parsing logic.
@pgsql/types: 📝 Type definitions for PostgreSQL AST nodes in TypeScript.
@pgsql/utils: 🛠️ AST utilities for constructing and transforming PostgreSQL syntax trees.

Credits

🛠 Built by the Constructive team — creators of modular Postgres tooling for secure, composable backends. If you like our work, contribute on GitHub.

Disclaimer

AS DESCRIBED IN THE LICENSES, THE SOFTWARE IS PROVIDED "AS IS", AT YOUR OWN RISK, AND WITHOUT WARRANTIES OF ANY KIND.

No developer or entity involved in creating this software will be liable for any claims or damages whatsoever associated with your use, inability to use, or your interaction with other users of the code, including any direct, indirect, incidental, special, exemplary, punitive or consequential damages, or loss of profits, cryptocurrencies, tokens, or anything else of value.