Now in public beta — Automations & Broadcasts

The email API
for engineers who ship.

Send transactional email in five lines of code. Built on AWS SES, instrumented end-to-end, with a dashboard you'll actually open.

Get started free See how it works

3,000 emails/mo freeNo credit card requiredSOC 2 Type II

noreply@halcyon.co✓ Delivered

Your monthly summary is ready

Hi Olivia — here's a quick look at how your team performed in April. Send volume is up 12% month over month…

msg_8adca6d9 · to olivia@yahoo.com10:42

support@northwind.dev↗ Opened

Order #4921 confirmed

Thanks for your purchase. We've started preparing your order…

msg_569344fc10:38

team@acme.dev✓ Delivered

Your one-time code is 408 219

Use this code within the next 10 minutes to finish signing in. Didn't request this? You can safely ignore it.

msg_e61ffd91 · 142ms10:44

welcome@layersend.devSending

Welcome to LayerSend, Olivia 👋

You're all set. Verify your sending domain in the dashboard to get to 99.9% deliverability — it takes about two minutes.

POST /v1/emails · 200 OK · 142ms10:45

01 — Send

A single endpoint.
Every transactional flow.

One REST call, scheduled sends, templated payloads, idempotent retries, custom headers and tags — everything you need to wire emails into your backend without leaving your editor.

POST /v1/emailsnode.js

import { LayerSend } from "layersend";

const ls = new LayerSend(process.env.LAYERSEND_KEY);

await ls.emails.send({
  from:    "team@acme.dev",
  to:      "olivia@yahoo.com",
  subject: "Your receipt for order #4921",
  template_id: "tmpl_order_confirmation",
  variables: { first_name: "Olivia", total: "$84.20" },
  tags:    ["order", "shop:eu"],
  scheduled_at: "2026-05-19T09:00:00Z",
  idempotency_key: "ord_4921",
});
// → { id: "msg_3d25742f-51b4-4342-a465-77407b34469a" }

msg_3d25742f · live event streamwebhooks

✓

DeliveredMay 18 · 03:44:01

toolivia@yahoo.comsubjectYour receipt #4921

◷

OpenedMay 18 · 03:44:09

clientApple MailosmacOS 15.3

↗

Link clickedMay 18 · 03:44:22

urlacme.dev/orders/4921

Stream openlive

02 — Platform

Built for engineers,
not for marketers.

A small surface area you can hold in your head. Every feature has a clean primitive on the API and a thoughtful UI in the dashboard — never one without the other.

Transactional email API

One POST /v1/emails. From/to/cc/bcc/reply_to, html or text, headers, tags, idempotency keys, scheduled sends.

Custom domains

Add a domain, copy the DKIM, SPF, and DMARC records, and we verify it the moment DNS propagates.

Scoped API keys

Full access, send-only, or read-only. Per-workspace, per-environment. Revoke instantly with no propagation delay.

Templates with variables

Reusable HTML templates with {{handlebars}} placeholders. Reference by id from any API call.

Real-time logs

Every API request and every email event. Searchable by recipient, status, method, tag. Inspect request and response bodies inline.

Modular webhooks

Subscribe to delivered, opened, clicked, bounced, complained. Replay or filter per workspace.

03 — Deliverability

Reach inboxes.
Not spam folders.

Sender reputation is a system, not a feature. We instrument the entire send path so you can debug why a message hit the inbox — or didn't.

acme.dev

Verified

DKIMls1._domainkey · v=DKIM1; k=rsa; p=MIIBIjANBgkq…✓ verified

SPFv=spf1 include:_spf.layersend.com ~all✓ verified

DMARCv=DMARC1; p=quarantine; rua=mailto:dmarc@…✓ verified

MXinbound.layersend.com (priority 10)◷ pending

Regionus-east-1 (Virginia) · 12ms medianedge

Automatic DKIM signing
Keys are generated and rotated for you on the AWS SES backend. You copy three DNS records once and forget the cryptography exists.
Dynamic suppression list
Hard bounces and complaints are added automatically. Compliant with CAN-SPAM, CASL, and GDPR by default.
Multi-region edge sending
Send from the AWS region closest to your recipient. North America, Europe, and Asia-Pacific points of presence — included on every plan.

04 — Templates

Start from a primitive.
Or bring your own HTML.

Six starter templates ship with every workspace. Edit them visually, version them in the dashboard, reference them by id in code.

Welcome Transactional

welcome@layersend.com → olivia@…

LS LayerSend

Welcome aboard, Olivia 👋

You're all set. We're excited to have you. Verify your email and you'll be ready to start sending.

Verify email →

Verify Transactional

no-reply@layersend.com → olivia@…

LS LayerSend

Confirm your email

Click the button below to confirm olivia@yahoo.com. This link expires in 24 hours.

Confirm email

Reset Transactional

security@layersend.com → olivia@…

LS LayerSend · Security

Reset your password

We got a request to reset your password. Wasn't you? Ignore this email — your password won't change.

Reset password

OTP Transactional

auth@layersend.com → olivia@…

LS LayerSend

Your one-time code

408219

Expires in 10 minutes

Receipt Transactional

orders@layersend.com → olivia@…

LS Order #4921

Thanks, Olivia

Linen tee · M$48.00

Wide pant · 30$92.00

Shipping$8.00

Total$148.00

Digest Marketing

news@layersend.com → olivia@…

LS LayerSend Monthly

What we shipped in AprilFaster send rates and a redesigned logs page.

Customer story · NorthwindHow they cut email infra costs by 40%.

From the changelogIdempotency keys are now GA on all plans.

Broadcast Marketing

team@layersend.com → 18,402 subscribers

LS LayerSend

Introducing LayerSend Forward

A new way to share campaigns with your team before they hit the inbox. Available today, on every paid plan.

Read announcement →

Blank Custom

your-template.html

<mjml><mj-body background-color="#fff"><mj-section><mj-text>Hi {{first_name}},// your design here</mj-text></mj-section>

05 — Pricing

Start free.
Pay only when you scale.

No annual contracts on Free or Pro. Switch tiers from the dashboard. Volume above 1M emails / month routes through a dedicated infrastructure plan — talk to us.

Free

For prototypes, side projects, and the first month of a new product.

$0/ forever

3,000 emails / month included
1 custom domain with DKIM, SPF, DMARC
1 workspace, up to 3 team members
Real-time logs (last 24 hours)
Node.js, Python, Go, Ruby SDKs
Community support

Start free

No credit card required

The email API
for engineers who ship.

A single endpoint.
Every transactional flow.

Built for engineers,
not for marketers.

Transactional email API

Custom domains

Scoped API keys

Templates with variables

Real-time logs

Modular webhooks

Reach inboxes.
Not spam folders.

Start from a primitive.
Or bring your own HTML.

Welcome aboard, Olivia 👋

Confirm your email

Reset your password

Your one-time code

Thanks, Olivia

Introducing LayerSend Forward

Start free.
Pay only when you scale.

Numbers we like.
For now.

Send your first
email today.

The email APIfor engineers who ship.

A single endpoint.Every transactional flow.

Built for engineers,not for marketers.

Transactional email API

Custom domains

Scoped API keys

Templates with variables

Real-time logs

Modular webhooks

Reach inboxes.Not spam folders.

Start from a primitive.Or bring your own HTML.

Welcome aboard, Olivia 👋

Confirm your email

Reset your password

Your one-time code

Thanks, Olivia

Introducing LayerSend Forward

Start free.Pay only when you scale.

Numbers we like.For now.

Send your firstemail today.

The email API
for engineers who ship.

A single endpoint.
Every transactional flow.

Built for engineers,
not for marketers.

Reach inboxes.
Not spam folders.

Start from a primitive.
Or bring your own HTML.

Start free.
Pay only when you scale.

Numbers we like.
For now.

Send your first
email today.