Now in public beta

Send emails from
your own domain.

10x cheaper than Resend. Enterprise-grade deliverability.

Add your domain, get an API key, start sending. Plans from 10.000₫/month per domain.

Start Sending NowView Documentation
send-email.sh
curl -X POST https://mail-gateway.duckdns.org/api/v1/send \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "hello@yourdomain.com",
    "to": "user@example.com",
    "subject": "Welcome!",
    "html": "<p>Thanks for signing up.</p>"
  }'

Trusted by developers at

Acme CorpTechFlowLaunchPadDevStackCloudBase

Up and running in three steps

From zero to sending emails in under a minute.

1

Add Your Domain

Point your domain to our platform. We handle DNS, DKIM, SPF, and DMARC automatically in 30 seconds.

2

Get Your API Key

Generate a scoped API key for your domain. Simple authentication, instant access.

3

Start Sending

Send transactional emails via our REST API. Simple, fast, reliable delivery.

Everything you need to send email

Built for developers who care about deliverability, speed, and cost.

Lightning Fast Setup
Domain provisioned in 30 seconds. Automated DNS, DKIM, DMARC configuration.
Per-Domain API Keys
Scoped keys with granular permissions for each sending domain.
Real-Time Logs
Track every email. Search, filter, and export delivery logs.
Multi-Domain
Manage unlimited domains from a single dashboard.
Webhook Callbacks
Get notified on delivery, bounce, and failure events.
99.9% Deliverability
Enterprise-grade infrastructure with SPF, DKIM, and DMARC.
Simple pricing

Per-Domain Pricing

Pay only for what you need. Add domains, pick a plan for each. Scale as you grow.

Per Domain, Per Month

Choose a sending limit for each domain

Emails / dayMonthly Price
50
10.000₫
100
30.000₫
150
60.000₫
200
75.000₫
300Most Popular
100.000₫
1,000
250.000₫
2,000
350.000₫
3,000
400.000₫
Custom
Contact us

All plans include:

Custom domainREST API accessDKIM / SPF / DMARCSend logs & analyticsEmail support
Get Started Now

Ready to start sending?

Join thousands of developers who trust SendMail Gateway for reliable, affordable email delivery.

Get Started Free