Want us to handle everything? Try Managed Mode →
Bring Your Own Cloud

Your infrastructure.
Our platform.

Connect your AWS account. Keep full control.

All the power of Transmit with your own cloud infrastructure.
Your reputation. Your data. Your rules.

View Pricing
Setup in 2 minutesYour AWS accountIAM role connect
Pay AWS Direct
~$0.10 per 1K emails
Your Reputation
100% yours to control
Unlimited Volume
Scale with your quota

Deliverability

We obsess over inbox placement

Most platforms leave deliverability to you. We built it into the core. Automatic and included on every plan.

99.2%
Inbox placement
<0.1%
Spam rate
<200ms
API latency
100%
Your reputation

Domain Warmup

New domain? We auto-ramp your sending volume over weeks, building trust with inbox providers.

  • Auto-increasing daily limits
  • Health score monitoring
  • ISP-specific pacing

Email Validation

Block invalid, disposable, and risky addresses before they hurt your reputation.

  • Syntax & MX validation
  • Disposable email detection
  • Risk scoring

Reputation Isolation

Your sending reputation is yours alone. Isolated infrastructure means other senders can't drag you down.

  • Isolated sending pools
  • Per-domain reputation
  • No shared IP risk

Included on every plan. No add-ons. No surprises.

One Platform

Every email. One API.

Stop duct-taping SendGrid for transactional, Mailchimp for campaigns, and custom code for inbound. One platform handles it all.

Transactional

Password resets, receipts, notifications. Sub-200ms API. Bounces handled automatically.

Learn more

Marketing

Campaigns, newsletters, drip sequences. Segment users. Schedule sends. Track opens and clicks.

Learn more

Inbound

Receive replies and support emails. Parse content. Route to webhooks or store in your inbox.

Learn more
curl -X POST https://api.xmit.sh/email/send \
  -H "Authorization: Bearer xmit_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "hello@yourapp.com",
    "to": "user@example.com",
    "subject": "Welcome to YourApp",
    "html": "<h1>Welcome!</h1><p>Thanks for signing up.</p>"
  }'

Why developers switch

From Postmark

Same developer experience. Same inbox rates. 1/10th the price. No luxury tax for good deliverability.

Start with Transmit →

From SendGrid

No shared IPs. No blacklist risk from other senders. Your reputation stays yours with isolated sending pools.

Start with Transmit →

From Amazon SES

Keep SES power, add the ops layer. Templates, logs, analytics, warmup, and sequences. Your AWS account, our platform.

Start with Transmit →
AI-Powered

Design emails by describing them

Stop fighting with drag-and-drop editors. Describe your email in plain text, iterate in seconds, and export production-ready HTML.

Multi-model AI

GPT-4o, Claude, or Gemini. Pick your model.

Brand kits

Define colors, tone, and logo once. Apply everywhere.

BYOK for AI

Use your own API keys. Control your costs.

Try Composer
Composer

"Create a welcome email for new users. Friendly tone, include a CTA to complete their profile. Use our brand colors."

v3 • 2.3s generation
GPT-4oReady

Your AI agent speaks email now

Manage campaigns, templates, and contacts from Claude, Cursor, or any MCP-compatible client.

18 tools, 2 workflows

"Create a welcome email template with firstName and companyName variables, then send a test to me@example.com"

For SaaS Teams

Your users are already contacts

Stop exporting CSVs from your auth provider. Connect once, and every new signup automatically becomes an email contact.

1

Connect your auth provider

Paste your API key. We encrypt it with AES-256-GCM.

2

Users sync automatically

Every 6 hours, new signups become contacts. No code changes.

3

Start sending

Transactional, campaigns, automations. All your users, ready to go.

View integration docs

Clerk

Available

Auth0

Available

Supabase

Coming soon

Firebase

Coming soon

Cognito

Coming soon

Okta

Coming soon
Auto-sync every 6 hours
New users become contacts automatically

Pricing

Save $5,400 - $16,200/year

vs SendGrid. 3x-25x more volume. Your infrastructure.

ServiceMonthly (5M emails)AnnualWhat's Included
AWS SES alone
$500$6,000Sending only. DIY everything.
SendGrid
$1,100-2,000$13,200-24,000Managed + vendor lock-in.
Postmark
$1,500+$18,000+Premium + vendor lock-in.
SES + TransmitBest Value
$650 (Total)$7,800Full stack on your SES.

$5,400 - $16,200/year saved vs SendGrid. Your data stays in AWS.

*Based on 5M emails/month. SES costs included.

Feature Comparison

FeatureAWS SESSendGridPostmarkTransmit
Transactional emails
Campaigns & newsletters
Inbound handling
Email validation
Domain warmup
Real-time analytics
Your AWS infrastructure
No vendor lock-in

Ready to hit the inbox?

Start free. Setup takes 2 minutes.

Read Docs

99.2% inbox placement. Cancel anytime.