Drops into whatever you already run.
Official SDKs for every major language, framework guides, no-code connectors, and signed webhooks — so email and currency are live in your stack in minutes.
Grab a key
Create a scoped API key in the dashboard — it works for email and currency.
Install the SDK
One line in your package manager, or call the REST API directly.
Send your first request
Fire /v1/send or /v1/convert and watch it land in the live event log.
OFFICIAL SDKS
Your language, one line to install.
Node.js
npm i @startupaid/sdkPython
pip install startupaidGo
go get startupaid.dev/goRuby
gem install startupaidPHP
composer require startupaid/sdkRust
cargo add startupaidJava
implementation 'dev.startupaid:sdk'cURL / REST
curl https://api.startupaid.devFRAMEWORKS
Next.js
Route handlers and server actions with typed helpers and edge-ready clients.
Django & Rails
First-class server SDKs with async sending and signed webhook verification.
Serverless
Cold-start-friendly clients for AWS Lambda, Cloudflare Workers, and Vercel.
Node & Express
Middleware for inbound webhooks and background send queues out of the box.
PLATFORMS & CRM
Shopify
Trigger transactional email and localized pricing from store and order events.
HubSpot & Salesforce
Sync contacts and fire lifecycle campaigns from CRM stage changes.
Stripe
Receipts, dunning, and currency-aware invoicing driven by billing events.
Slack & Discord
Route delivery alerts and rate-change webhooks straight into your channels.
NO-CODE & AUTOMATION
Zapier
Connect 6,000+ apps — send email or fetch rates without writing code.
Make (Integromat)
Visual scenarios that trigger sends and conversions on any event.
Airtable & Sheets
Drive campaigns and bulk conversions straight from your spreadsheets.
n8n
Self-hosted workflows with a native startupAid node for full control.
WEBHOOKS
Your app, in the loop for every event.
Signed, retried callbacks fire the moment an email is delivered, opened, bounced, or a rate crosses your threshold. Verify with your signing secret and replay any event.
Read webhook docs arrow_forwardPOST https://you.dev/hooks { "type": "email.delivered", "id": "evt_9f2a", "message_id": "msg_a1b2c3", "at": "2026-07-08T09:00:00Z" }
Wire it in before your coffee's cold.
Install an SDK, drop in a key, and send your first request in minutes.
No credit card · 10,000 free emails/month · Cancel anytime