Communications Infrastructure

Every feature you’d build yourself.Already built.

Automatic retries. Intelligent queues. Real-time webhooks. Contact intelligence. System templates. Everything you need to send at scale. Email works today. SMS and voice launch Q1-Q2 2026.

Most platforms make you choose between features and simplicity.
We built both into the foundation.

99.9%
Delivery rate
<150ms
API response
$0.50
Per 1K credits

No infrastructure to maintain

No cron jobs to babysit.

Built-in infrastructure means zero setup, maximum reliability

Pay for sends, not seats.

Credits never expire. No surprise bills, no complex tier calculations. Start with 3,000 free credits and only pay for what you send.

Queues and retries. Built in.

Queues, retries, and rate limiting built in. No cron jobs, no queue brokers, no custom retry logic to maintain.

Real-time visibility. Zero pipelines.

Real-time dashboard shows delivery status, opens, clicks, bounces. Export-ready analytics without building pipelines.

Templates & Flexibility

Ship emails without waiting on designers.

Most platforms lock you into one format.
We don’t.

System Templates

Email Preview
From:Acme <hello@acme.com>
Subject:Welcome to Acme, Sarah!
Transmit

Welcome, Sarah

Your Acme account is ready. We're excited to have you on board.

sarah@example.com

Get Started

Your choice of format

HTML/Handlebars
Traditional
<h1>Welcome {{firstName}}!</h1>

<p>Thanks for signing up.</p>

<a href="{{confirmUrl}}">
  Confirm your email
</a>

<p class="footer">
  {{companyName}}
</p>
React Email
Modern
export default function Welcome({
  firstName, confirmUrl
}) {
  return (
    <Html>
      <Text>Welcome {firstName}!</Text>
      <Button href={confirmUrl}>
        Confirm email
      </Button>
    </Html>
  );
}
Every system template available in both formats • Live preview for both

Marketing Templates

Pre-built newsletters, announcements, and campaigns

Q1 2026

Drag-and-Drop Editor

Visual editor for teams who prefer no-code

Q1 2026

Automatic retries. Zero babysitting.

Exponential backoff, provider-aware rate limiting, delivery tracking. Your sends work or they retry until they do.

  • Automatic retries with exponential backoff
  • Provider-aware rate limiting and throttling
  • Delivery status tracking for every message
  • No cron jobs or queue brokers to maintain
Message sent
Queue
Automatic retry
Delivered

Subscribe to what matters. Ignore what doesn't.

Granular event subscriptions. Choose which events trigger webhooks. Delivery, engagement, domains — your choice.

  • 15+ event types across email, contacts, and domains
  • Automatic retry with exponential backoff
  • Signed payloads with rotating secrets
  • Dashboard replay without code changes
Event Subscriptions
Choose which events trigger this webhook
Email Events
Email Delivered
Email Opened
Email Clicked
Email Bounced
Contact Events
Contact Created
Contact Unsubscribed
Domain Events
Domain Verified
Domain Failed Verification
Subscribe to individual events or entire categories • Add multiple webhooks with different event filters

Contact profiles built automatically. No CRM glue.

Every send creates or updates records. Full engagement history. Subscription management. Complete timelines. No manual sync required.

  • Automatic contact creation for every message sent
  • Full engagement history: opens, clicks, bounces per contact
  • Email and SMS subscription management
  • Contact-level analytics and segmentation
Sarah Chen
sarah@company.com
Subscribed
Last contacted 2 days ago
24
Emails Sent
18
Opened
12
Clicked
75%
Engagement
Recent Activity
Opened: Product Update - Q1 2026
2 hours ago
Clicked: Weekly Newsletter #47
2 days ago
Delivered: Password Reset
5 days ago

Suppression that actually thinks.

Hard bounces blocked instantly. Soft bounces retry intelligently. Complaints block marketing but allow transactional. Your reputation protected automatically.

  • Auto-suppress hard bounces and complaints instantly
  • Soft bounce retry logic — we keep trying without blocking
  • Transactional override: Send critical emails even to complained users
  • Maintain domain authority and stay compliant automatically
Suppression List
Automatically managed to protect your sending reputation
invalid@domain.com
Hard Bounce
2 days ago
Blocked
Marketing
Blocked
Transactional
Mailbox does not exist — permanently blocked from all sends
user@example.com
Complaint
5 days ago
Blocked
Marketing
Allowed
Transactional
Marked as spam — marketing blocked, transactional still permitted
contact@company.com
Soft Bounce
1 hour ago
Retrying
Marketing
Retrying
Transactional
Mailbox full — will retry automatically without blocking

Real-time analytics. Zero data pipelines.

Per-provider breakdowns, searchable event streams, bounce diagnostics. 30-day bodies, 365-day metadata. Export when you need it.

  • Per-provider delivery and engagement breakdowns
  • Searchable event stream with bounce diagnostics
  • 30-day email bodies, 365-day metadata retention
  • Export-ready data for custom reporting
DELIVERY RATE
99.8%
↑ 0.2% from last week
OPEN RATE
24.3%
↑ 3.1% from last week
CLICK RATE
8.7%
↑ 1.5% from last week
BOUNCE RATE
0.2%
Stable

Swap endpoints. Keep your code.

Drop-in compatible with existing payloads. No code changes required. Compatibility warnings guide adoption. Change the URL, you're done.

  • Works with existing API payloads
  • No code changes required to migrate
  • Compatibility warnings guide incremental adoption
  • Swap endpoints and auth tokens
Using the Transmit SDK
import { Transmit } from 'transmitdev';

const transmit = new Transmit({
  apiKey: process.env.TRANSMIT_API_KEY
});

await transmit.emails.send({
  to: "user@example.com",
  from: "hello@yourdomain.com",
  subject: "Hello"
});

TypeScript SDK available now • Other languages coming soon

DNS that doesn’t waste your time.

Auto-generated DKIM, SPF, and DMARC records. Verification status polling. Copy-paste and we handle the rest.

Step 1

Generate records

We create all DNS records automatically

Step 2

Copy & paste

Add to your DNS provider

Step 3

Auto-verify

We poll and notify when ready

Control costs and compliance

Transparent pricing and built-in guardrails for enterprise-ready operations

Budget controls

  • Org-level rate limits (hourly/daily/monthly)
  • Budget thresholds prevent overspending
  • One-click send pause for any organization

Credit management

  • Credits never expire, no monthly commitments
  • Automatic transaction ledger for finance
  • Transparent consumption tracking

Stop configuring.
Start shipping.

Start sending in minutes. No credit card required.

3,000 free credits • Drop-in compatible