Transactional Email & API

One API call. Straight to the inbox.

Send receipts, password resets and alerts over a clean REST API or SMTP relay — on the same authenticated, warmed infrastructure as your marketing. One platform for every email your product sends.

1API call to send
7languages with examples
SMTPor REST — your call
The big one

Your first send is one POST.

POST to /api/v2/transactional/send with a to, a subject and an HTML body — that is the whole integration. Batch hundreds of messages in a single /batch call, and look up delivery status by ID whenever you need it.

curl, JavaScript, Python, Go, Java, Ruby & PHP examples
02

SMTP relay when you would rather not code.

Point your app or framework at Bluey's SMTP endpoint with a generated credential and start sending — no library, no rewrite. Same authentication, same delivery logs.

03

Every message, logged and searchable.

Delivery, opens, bounces and complaints for every transactional send land in the same dashboard as your campaigns. Look up any message by ID, or wire webhooks for real-time events.

How it works

What it actually looks like.

Three steps from sign-up to send. Nothing in here costs extra, nothing requires a sales call.

01

Grab your API key.

Create a key in settings and pass it in the X-API-Key header. A test mode and a sandbox are there before you touch real traffic.

02

Send with REST or SMTP.

Call /transactional/send (or /batch for many), or point your SMTP client at our relay with a generated credential. Copy-paste examples in seven languages.

03

Track and react.

Check status by email ID, watch delivery and bounces in the dashboard, and subscribe webhooks so your app hears about every event in real time.

analytics · revenue
7d30d90d
Live
Revenue · last 30 days
₹4,28,90018.4%
Open rate
42.1%+3.2pt
Click rate
8.7%+1.4pt
RevenueLast period
Nov 1 – Nov 30
We moved password resets and receipts onto Bluey's API in an afternoon — and finally see product email and marketing in one place.
AN
Arjun NairCTO, Tumble
Before vs after

The day-to-day, side by side.

Two systems or one

A separate transactional provider for product email and a different tool for marketing — two bills, two reputations, two dashboards.

With Bluey

Product and marketing email on one authenticated platform: one bill, one place to look.

Integration effort

Days wiring an SDK, templating and webhook plumbing before the first email leaves.

With Bluey

One authenticated POST — or SMTP — sends your first message in minutes.

Deliverability

Transactional mail on a cold, unknown IP that drops resets into spam.

With Bluey

The same warmed, SPF/DKIM/DMARC-authenticated sending as your campaigns.

Asked a lot

The three things teams check first.

Q1Do you have an SMTP relay or just an API?

Both. Use the REST API (/api/v2/transactional/send and /batch) or generate SMTP credentials and point any app or framework at our relay — same authentication and the same delivery logs either way.

Q2Which languages have examples?

Ready-to-paste snippets for curl, JavaScript, Python, Go, Java, Ruby and PHP. Authentication is a single X-API-Key header, so any HTTP client works.

Q3Can I test before sending real email?

Yes — there is a test mode and a sandbox so you can simulate sends and inspect payloads before switching to live traffic.

Q4Does transactional sending share my marketing reputation?

It runs on the same authenticated domains and warmed infrastructure, so your resets and receipts get the same inbox placement — and everything is visible in one dashboard.

Free · 7 days

Try it on your own list.

Sign up, send a campaign, see what changes. No card, cancel anytime.