Email API & SMS messaging for developers.

One platform for customer email and SMS messaging across every project. Developers and authorized coding agents use the same scoped keys, simulator, and delivery records.

Get API key Read the quickstart

REST, Node.js, SMTP & SMS
MCP for coding agents
Simulator testing
Multi-project by default

Developers and coding agents read the same surface.

MCP and OpenAPI help coding tools understand the surface. The Node SDK, REST API, and SMTP keep the finished integration ordinary and portable.

ChatGPTMCP apps ClaudeMCP and code AntigravityMCP and skills v0Generated app code Next.jsNode SDK and REST SupabaseREST or SMTP

Integrate today.

Send with the typed Node.js SDK, a direct REST request, or the SMTP settings your app already understands. The same logs and delivery controls sit behind each path.

Explore the docs

import { NoticeAPI } from "noticeapi";

const noticeapi = new NoticeAPI(
  process.env.NOTICEAPI_API_KEY!
);

await noticeapi.emails.send({
  from: "Acme <billing@acme.com>",
  to: "customer@example.com",
  subject: "Your receipt",
  html: "<p>Thanks for your order.</p>",
});

Acceptedmessage_id: 01J…B7M

Build, test, and operate email in one place.

Build, test, and operate email without stitching together a different tool for every stage.

Test the unhappy paths safely.

Simulate delivery, bounce, complaint, and suppression results before a customer is ever involved.

Open the simulator guide

Follow each recipient outcome.

See the request, message, and delivery timeline together so a support question has a concrete answer.

See delivery events

Keep every app in its own lane.

Separate projects, keys, domains, and logs while managing them from one workspace.

See project controls

One quiet place to run the work.

Projects keep each product’s identity and activity separate. Delivery logs show what happened. Suppressions help stop repeat sends before they leave.

Per-project API keys Verified sending domains Searchable recipient logs

ProjectAcme App

Sender verified

Accepted2,482This month

Delivered2,451Outcome tracked

Suppressed9Protected before send

Recent recipientsAll events

Receipt #1042alex@example.comDelivered

Magic sign-in linksam@example.comDelivered

Sandbox bouncedev@example.comSimulated

Give a coding agent a clear email job.

Give an agent a project-scoped key. It can send email, read inbound messages from a verified receiving domain, and inspect delivery records through MCP or REST. You choose the project, domains, and capabilities.

Explore agent access View API reference

Paid packages bring both email paths together.

Start free with transactional email, then move into Pro or Scale for bundled transactional and marketing volume. Additional accepted recipients stay pay as you go.

Free$0/month

3,000 transactional emails
No marketing contacts or automations
Simulator included

Start free

Pro$10/month

25,000 transactional emails
10,000 marketing recipients + contacts
10,000 automation runs

Get API key

Scale$129/month

200,000 transactional emails
200,000 marketing recipients + 100,000 contacts
200,000 automations + 100 domains
90-day history + lower usage rates

Explore Scale

Compare every plan

Before you wire in the API.

Need a detail we missed? Talk with us.

Can I test without sending real email?

Yes. Use the simulator and its test recipients to check delivered, bounced, complained, and suppressed outcomes without contacting a real inbox.

Do transactional and marketing email live together?

Pro and Scale include both paths in one workspace and one subscription. Free includes transactional email and simulator testing.

Can I keep using SMTP?

Yes. Point a compatible app at smtp.noticeapi.com on port 465 with implicit TLS and an API key as the password.

How does the free plan work?

Start with one project, one sending domain, 3,000 transactional emails, and sandbox testing each month. Add a card to activate production sending; Free itself stays at $0.

Email infrastructure that stays understandable.

Start with one project, one API key, and a simulator send.

Get API key Read the quickstart