Built ForHigh-Deliverability Email at Scale

Send Email at Scale —
Fast, Reliable, Developer-First.

SDK-powered email infrastructure with global relay nodes, real-time analytics, and enterprise-grade performance.

Uptime

99.99%

Latency

<20ms

Coverage

Global Infrastructure

varbox-init.ts
1import { VarboxMail } from 'varboxmail';
2 
3const mail = new VarboxMail({
4 apiKey: 'send_live_99d2...0001',
5 // Initialize infrastructure
6});
7 
8await mail.send({
9 to: 'user@example.com',
10 subject: 'Hello from VarboxMail',
11 html: '<p>Delivered in &lt;20ms.</p>'
12});
Scalable Core

The infrastructure behind
intelligent delivery.

Scroll to explore every layer of our platform—engineered bottom-up for reliability at any scale.

01 — Observability

Live Analytics

Real-time delivery tracking from every SMTP relay node. Monitor opens, clicks, and bounce rates the moment they happen.

Active Feature
Live Analytics

02 — Integration

Developer Friendly

Clean APIs, comprehensive SDKs, and clear documentation built to slot into your stack within minutes — not hours.

Active Feature
Developer Friendly

03 — Infrastructure

Edge Distribution

Global cloud relay network engineered for minimal delivery latency across multi-region fallback layers.

Active Feature
Edge Distribution

04 — Intelligence

Smart Routing

Dynamically route between AWS SES, Mailgun, or custom SMTP servers. Graceful fallbacks guaranteed.

Active Feature
Smart Routing

05 — Automation

AI-Powered Campaigns

Built-in AI brain for email template synthesis and autonomous marketing campaign performance insights.

Active Feature
AI-Powered Campaigns

06 — Monitoring

SDK Node Telemetry

Full health, throughput, and error reporting across all global sending nodes via live telemetry dashboards.

Active Feature
SDK Node Telemetry

No vendor lock.
Control your data.

01.

Privacy First

Keep your data in your infrastructure. We only handle the delivery.

02.

Flexible Setup

Switch between SES, SMTP, and Gmail with a single config change.

03.

Advanced Analytics

Detailed tracking from device OS to city-level location.

Emails Dashboard showing integrations
Platform.02

Technical Implementation

Production-ready email infrastructure — four core layers working in concert.

Identity Provisioning

Automated DNS record verification for DKIM, SPF, and DMARC through a single API call — no manual DNS hunting.

RESPONSE: DOMAIN_STATUS
{
  "domain": {
    "status": "verified",
    "records": [
      {
        "type": "DKIM",
        "selector": "vrbx_1"
      }
    ]
  }
}

Global Relay Mesh

Instant deployment across 24 edge relay nodes for sub-100ms delivery — no infrastructure management required.

ZSH — VARBOXMAIL · SDK
$ npm install varboxmail
added 142 packages in 3s
$ varboxmail init --region us-east-1
Provisioning edge nodes... [OK]
Relay mesh active: 24/24 nodes

SDK Integration

Configure rate limits, warmup strategy, and concurrency in a single typed config object. Ship to production in minutes.

varboxmail.config.ts
import { VarboxMail } from 'varboxmail';

const mail = new VarboxMail({
  apiKey: process.env.VARBOX_KEY,
  region: 'us-east-1',
  concurrency: 64,
  warmup: 'geometric',
});

Precision Delivery

99.98%

Efficiency

Full telemetry of every handshake, delivery event, and bounce across your entire relay fleet.

REALTIME_LOGS
14:22:01 SEND user_4922.vrbx
14:22:03 SEND user_0201.vrbx
14:22:04 SEND user_1120.vrbx
14:22:05 ACK <12ms p99

Throughput/s

Pricing

Simple, persona-based pricing.

Pick the plan that fits your role. Developers start free, marketing teams get the full suite.

Developer
Freeforever

For engineers integrating email into their apps.

  • 100 emails / day
  • REST API + Node.js SDK
  • Basic delivery analytics
  • 1 API key
  • Community support
For Teams
Marketing
$9/ month

For teams running campaigns and managing subscribers.

  • 50,000 emails / month
  • Campaign builder
  • Subscriber lists & segmentation
  • Full analytics suite
  • Multiple API keys
  • Priority support
Enterprise
Custom

For high-volume teams with dedicated infrastructure needs.

  • 5,000+ emails / day
  • Connect your AWS SES
  • Dedicated relay infrastructure
  • AI campaign analysis & suggestions
  • Detailed engagement analytics
  • Custom domain & IP warmup
  • SLA + 24/7 dedicated support
Testimonials

Trusted by engineering teams

"Our email delivery went from 85% to 99%. Incredible infrastructure."

C
CTO, Pipeline.io

"The React SDK made integration take 10 minutes. Brilliant docs."

L
Lead Engineer, SendFlow

"We save $1,200 a month compared to legacy providers."

F
Founder, StartupY

"Live analytics dashboard is a complete game changer for our marketing."

C
CMO, GrowthInc

"Our email delivery went from 85% to 99%. Incredible infrastructure."

C
CTO, Pipeline.io

"The React SDK made integration take 10 minutes. Brilliant docs."

L
Lead Engineer, SendFlow

"We save $1,200 a month compared to legacy providers."

F
Founder, StartupY

"Live analytics dashboard is a complete game changer for our marketing."

C
CMO, GrowthInc
Production Stable

Ready to scale your
email infrastructure?

Join 200+ teams optimizing delivery rates with VarboxMail. Deploy your first global relay node in minutes.

Free Tier Available

Start building instantly at no cost

Global SDK Sync

Unified integration, globally distributed

99.9% Uptime SLA

Mission-critical reliability guarantee

SOC2 Compliant

Enterprise-grade security and compliance