Every channel in one API.
Email, SMS, voice, and chat share the same patterns, the same webhooks, the same credit system. Start with one. Scale to all.
communications infrastructure for the internet
One API for email, SMS, voice, and chat.transmit.dev
Most companies juggle three vendors for this. You won’t. Start with email today, expand to new channels without changing your code.
Credits never expireUse them this month, next month, or next year. Zero waste.
One API, all channelsEmail today. SMS, voice, chat launching Q1-Q2 2026.
No monthly quotasPay for what you use. Not what expires at month-end.
the api you write once
Same code. Every channel.
Email works today. SMS and voice launch Q1-Q2 2026. Same API patterns. Same credits. No rewrites.
index.ts
Production Ready
import { Transmit } from 'transmitdev'; const transmit = new Transmit(process.env.TRANSMIT_API_KEY); // Send transactional emailawait transmit.emails.send({ from: 'hello@yourdomain.com', to: 'user@example.com', subject: 'Welcome!', html: '<p>Thanks for signing up!</p>'}); // That's it. We handle queues and retries.Available now
One API
Same pattern, all channels
Same Credits
Never expire, work everywhere
Built-in Tracking
Opens, clicks, delivery status
built for how you want to build
Powerful capabilities. Simple implementation.
Because complexity should be our problem, not yours. Production-grade infrastructure, real-time tracking, intelligent routing—everything you need to scale from hundreds to millions without changing your code.
One system. All channels.
Send email today, SMS next month—same credits, same predictable pricing. No expiration. No surprises. No fine print.
Production-grade infrastructure.
Real-time tracking, automatic retries, intelligent routing. The complexity handled. The control yours.
One integration unlocks everything.
Add SMS, voice, or chat without rearchitecting. Your code stays clean. Your infrastructure stays simple.
Common problems. Elegant solutions.
Challenge
"Rate limits killed our launch day."
Solution
Intelligent batching and automatic backoff built into every request.
Challenge
"Migration projects take months."
Solution
Drop-in compatible endpoints. Most teams ship in under an hour.
Challenge
"Billing is a black box nightmare."
Solution
Real-time credit tracking. Simple math. No surprise invoices.
consolidate your stack
Stop juggling communication vendors.
Most companies manage three separate vendors for email, SMS, and voice. Different APIs. Different billing. Different dashboards.
One API handles all of it. One credit system. One dashboard.
The traditional approach
Email Provider
Transactional Email
Monthly quotas waste credits
Complex pricing tiers
Separate billing
Voice Provider
Voice Calls
Different API patterns
Separate compliance
Another vendor to manage
SMS Provider
Text Messaging
Credits don't cross-apply
Separate rate limits
Third invoice
The hidden cost of vendor sprawl
3 procurement processes • 3 security reviews • 3 contract renewals • 3 integration points to maintain
The Transmit approach
One API. One invoice. One support team. Credits work across email, SMS, voice, and chat.
No integration glue. No vendor management overhead.
One invoice. One credit system.
Universal credits work across all channels. Pay once, use everywhere. No monthly resets.
Production-grade infrastructure
Multi-region routing, automatic retries, real-time monitoring across every channel.
Same patterns everywhere
Email, SMS, voice, and chat use identical API design. Learn once, use forever.
Unified visibility
One dashboard for all channels. Track every message from a single interface.
From multiple APIs to one consistent interface
Traditional: Different patterns
emailProvider.send()
voiceProvider.call.create()
smsProvider.messages.send()
Three different patterns
Transmit: One pattern
transmit.emails.send()
transmit.voice.call()
transmit.sms.send()
Learn once, use everywhere
Same authentication. Same error handling. Same monitoring.
real-time visibility
See everything in real-time.
Production-ready dashboard with email tracking, analytics, and delivery insights. Know exactly what's happening with every message.
Transmission Timeline
Queued with Transmit
Transmit handed this message to the recipient's provider.
Delivered
Recipient mail server reported successful delivery.
Opened
Tracking pixel loaded for this recipient.
USER AGENT
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246 Mozilla/5.0
Delivered
<150ms latency
99.9%
Uptime
Real-time Tracking
Opens, clicks, delivery status
Credits Never Expire
Buy once, use forever
Built-in Analytics
Track without external tools
Webhook Events
Every delivery event
Launch Partner Success Story
How THIScar saved 75%
in 8 minutes
Early partner consolidated two communication vendors into one API. Zero downtime. Instant cost savings.
75%
Cost Reduction
Consolidated two vendors
8
Minutes
Total migration time
99.9%
Deliverability
Production-grade from day one
0
Downtime
Zero service interruption
Private Beta Launch Partner
"We consolidated two vendors into Transmit and cut communication costs by 75%. Migration took 8 minutes — swapped API endpoints, deployed, done."
CTO, THIScar.com
The 8-minute migration
Drop-in compatible. Same response format. Here's exactly what they did.
1
Update base URL
// Update API endpoint https://api.transmit.dev // Drop-in compatible
2 minutes
2
Replace API key
// Environment variable update TRANSMIT_API_KEY=xmit_live_...
1 minute
3
Deploy & verify
npm run build npm run deploy # ✅ All tests passing
5 minutes
Ready to be our next success story?
Get the same results. Migration support included with your first 3,000 credits.
Early access program • limited availability
Build the future with us.
We’re production-ready for email and actively building SMS and voice. Join now and help shape the platform. Your input influences what we build next.
3,000 free credits to start building
No credit card required. Credits never expire. Use them as you grow.
Direct input on SMS & voice APIs
Shape the platform before it ships. Your feedback influences what we build next.
Direct access to the founding team
Private channel with the builders. Deploy-day questions answered in minutes, not hours.
Early access to new channels
First to try SMS, voice, and chat as they launch. Same credits, same API.
Founding member pricing locked in
$0.50 per 1K credits through 2026. Your rate doesn't change as we grow.
Migration support included
We handle templates, webhooks, and suppressions. You focus on shipping.
Most platforms say “scale with us” but haven’t built the foundation to mean it.
We have.
Pricing
$0.50 / 1K credits
Credits
Never expire
Access
Founding team direct
Most infrastructure decisions take weeks of evaluation.
This one takes an afternoon.
Start building today.
3,000 free credits. Full API access. No credit card required. When you’re ready to migrate, we handle templates, webhooks, and suppression lists for you.
No wasteCredits never expire. Pay only for what you send.
Fast migrationMost teams ship in under an hour. Drop-in compatible.
Direct supportEarly members get direct line to the founding team.