SDKs & Libraries

Postscale provides official SDKs for popular programming languages, plus community-maintained libraries for additional platforms.

Official SDKs

Node.js / TypeScript

npm install @postscale/sdk
# or
yarn add @postscale/sdk
# or
pnpm add @postscale/sdk

Usage:

import { Postscale } from '@postscale/sdk';

const postscale = new Postscale('ps_live_your_api_key');

// Send an email
const result = await postscale.emails.send({
  from: 'hello@yourapp.com',
  to: ['user@example.com'],
  subject: 'Welcome!',
  html_body: '<h1>Hello World</h1>',
});

console.log('Email sent:', result.message_id);

Features:

• Full TypeScript support with types for all endpoints
• Promise-based async/await API
• Automatic retries with exponential backoff
• Request/response logging for debugging

Python

pip install postscale
# or
poetry add postscale

Usage:

from postscale import Postscale

client = Postscale(api_key='ps_live_your_api_key')

# Send an email
result = client.emails.send(
    from_email='hello@yourapp.com',
    to=['user@example.com'],
    subject='Welcome!',
    html_body='<h1>Hello World</h1>'
)

print(f'Email sent: {result.message_id}')

Features:

• Python 3.8+ support
• Type hints for IDE autocomplete
• Sync and async clients available
• Automatic retry handling

Go

go get github.com/postscale/postscale-go

Usage:

package main

import (
    "context"
    "fmt"
    "github.com/postscale/postscale-go"
)

func main() {
    client := postscale.NewClient("ps_live_your_api_key")

    result, err := client.Emails.Send(context.Background(), &postscale.SendEmailParams{
        From:     "hello@yourapp.com",
        To:       []string{"user@example.com"},
        Subject:  "Welcome!",
        HtmlBody: "<h1>Hello World</h1>",
    })
    if err != nil {
        panic(err)
    }

    fmt.Printf("Email sent: %s\n", result.MessageID)
}

Features:

• Idiomatic Go API design
• Context support for cancellation
• Structured error types
• Connection pooling

Ruby

gem install postscale
# or add to Gemfile
gem 'postscale'

Usage:

require 'postscale'

client = Postscale::Client.new(api_key: 'ps_live_your_api_key')

result = client.emails.send(
  from: 'hello@yourapp.com',
  to: ['user@example.com'],
  subject: 'Welcome!',
  html_body: '<h1>Hello World</h1>'
)

puts "Email sent: #{result.message_id}"

PHP

composer require postscale/postscale-php

Usage:

<?php

use Postscale\Client;

$client = new Client('ps_live_your_api_key');

$result = $client->emails->send([
    'from' => 'hello@yourapp.com',
    'to' => ['user@example.com'],
    'subject' => 'Welcome!',
    'html_body' => '<h1>Hello World</h1>',
]);

echo "Email sent: " . $result->message_id;

HTTP API

If there's no SDK for your language, you can use the HTTP API directly:

curl -X POST https://api.postscale.io/v1/send \
  -H "Authorization: Bearer ps_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "hello@yourapp.com",
    "to": ["user@example.com"],
    "subject": "Welcome!",
    "html_body": "<h1>Hello World</h1>"
  }'

SDK Configuration

All SDKs support common configuration options:

Example (Node.js):

const postscale = new Postscale('ps_live_your_api_key', {
  timeout: 60000,
  retries: 5,
  debug: true,
});

Community Libraries

Community-maintained libraries (not officially supported):

Webhooks

The SDKs above focus on the request side of the API. Webhook signature verification on the receiver side is a small piece of standard-library HMAC code in any language — see the Webhooks guide for runnable Node and Python verifiers, plus details on the timestamped t=…,v1=… format and how to handle multiple v1= signatures during a rotation grace window.