⚡ 100% Automated Dedicated SMTP Infrastructure

From SMTP Deployment to Inbox Delivery

Reach Every Inbox. Eliminate Shared IP Bans. Deploy Dedicated MTAs in 60 Seconds.

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mainautosmtp
Global SMTP Fleet Telemetry: Active
128 Dedicated Bare-Metal Nodes Monitored • 0 DNSBL Blacklist Incidents
Deploy Dedicated Node →
Tested & Proven Deliverability

Engineered for 99.8% Primary Inbox Placement Across Global ISPs

AutoSMTP automatically adjusts traffic shaping, connection throttling, and volume step-downs tailored to the algorithmic rules of each major mailbox provider.

Gmail & Workspace 99.8%
Continuous 0.01% Google Postmaster spam-rate throttle guard and DMARC alignment.
Microsoft 365 & Outlook 99.4%
Automated Smart Network Data Services (SNDS) reputation monitoring & junk folder recovery.
Yahoo Mail & AOL 99.7%
Real-time Complaint Feedback Loop (CFL) suppression and aggressive backoff mitigation.
Enterprise & Custom MX 99.9%
Carrier-grade TLS 1.3 encryption with strict reverse DNS (PTR) and BIMI VMC compliance.
Enterprise Architecture

5 Pillars of Uncompromising Dedicated Email Infrastructure

Say goodbye to shared IP penalties. AutoSMTP combines the raw speed of bare-metal PowerMTA and KumoMTA with intelligent automation.

🚀
Bare-Metal Power

1-Click Dedicated Provisioning

Instant automated deployment of dedicated bare-metal PowerMTA or KumoMTA servers. Zero noisy neighbors, dedicated clean IPv4 subnets, and throughput exceeding 1–3 million messages per hour.

🛡️
Security Guard

Automated DNS & DMARC Sync

Automatic 2048-bit DKIM key generation, strict SPF records, PTR/rDNS matching, and DMARC p=reject compliance managed automatically without touching complex BIND zone files.

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Adaptive Warming

Gas-Pedal IP Warming

Automated IP warm-up algorithms that scale sending volume safely. Real-time feedback detects ISP 421 deferral codes and automatically backs off concurrency to protect your sender score.

🔄
Dual Pipeline

Dual Bounce & FBL Classifier

Separates synchronous RFC 5321 in-band rejections from asynchronous FBL complaint webhooks. Automatically populates suppression tables to keep permanent bounce rates strictly under 1.5%.

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Pre-Flight Hygiene

Integrated Email List Sanitizer

Multi-stage verification waterfall checks syntax, MX availability, disposable domains, and performs deep SMTP mailbox ping handshakes without triggering spam filters or sending actual emails.

📊
Real-Time Intelligence

Carrier-Grade Telemetry

Sub-millisecond connection logging, live queue depth monitoring, latency tracking, and continuous 34-zone DNSBL blacklist scanners keep your delivery pipes running at peak performance.

Interactive Verification Console

Test Your List Hygiene Before You Send

Simulate a real-time RFC 5321 verification probe against our carrier-grade DNS & SMTP verification waterfall.

RFC 5322 Syntax
Passed (Valid Format)
MX Availability
mx1.enterprise-corp.com (18ms)
Disposable / Spam Trap
Clean (0% Trap Risk)
Mailbox Existence
250 2.1.5 Recipient OK
Live Infrastructure Diagnostics

Carrier-Grade Telemetry Monitored Every 60 Seconds

Unlike opaque cloud relays where delivery failures disappear into black-box support queues, AutoSMTP gives you real-time visibility into every TCP handshake, TLS cipher, and ISP deferral.

12.4 ms
Handshake Latency
TLS 1.3
Enforced Encryption
0 / 34
Clean DNSBL Status
100%
DMARC Alignment
Predictable & Transparent

Transparent Dedicated Plans. Zero Contact List Penalties.

Stop paying exponential SaaS fees as your audience grows. Choose the dedicated MTA allocation that matches your sending scale.

Starter Sandbox
$0
Free forever developer tier
  • ✓ 1,000 Test Messages / Month
  • ✓ Interactive SMTP Sandbox
  • ✓ 50 Email Verifications / Month
  • ✓ REST API & Webhook Access
  • ✓ Community Discord Support
Start Free Sandbox
Most Popular
Dedicated Pro
$79
per month / billed monthly
  • ✓ 1 Dedicated Clean IPv4
  • ✓ PowerMTA or KumoMTA Engine
  • ✓ 250,000 Emails / Month
  • ✓ Automated Gas-Pedal IP Warming
  • ✓ Dual In-Band & FBL Classifier
  • ✓ 10,000 List Verifications / Mo
  • ✓ 99.9% Uptime SLA Guarantee
Deploy Dedicated Node →
Enterprise Fleet
$699
per year ($58/mo equivalent)
  • ✓ 2 Dedicated Clean IPv4s
  • ✓ Multi-Tenant Virtual MTAs
  • ✓ 1,000,000+ Emails / Month
  • ✓ High-Concurrency Cluster Tuning
  • ✓ Unlimited Email List Sanitization
  • ✓ Automated BIMI VMC Monitoring
  • ✓ Dedicated Deliverability Slack
Deploy Enterprise Fleet
Best Long-Term ROI
Lifetime VIP Pass
$1,499
One-time payment • Zero renewal fees
  • ✓ 4 Dedicated Clean IPv4 Subnets
  • ✓ Lifetime Bare-Metal Server Allocation
  • ✓ Unlimited Volume Capacity
  • ✓ Lifetime Deliverability Suite Updates
  • ✓ Zero Monthly or Annual Invoices
  • ✓ VIP Direct Telegram & Slack Access
Claim Lifetime VIP Node
Comparison Matrix

How AutoSMTP Outperforms Shared Relays and DIY MTAs

Evaluating the real technical trade-offs between shared SaaS email providers, self-hosted Postfix, and automated dedicated AutoSMTP infrastructure.

Evaluation Dimension AutoSMTP Dedicated Cluster Shared SaaS Relays (SendGrid, Mailchimp) DIY Self-Hosted Postfix
IP Reputation Isolation 100% Dedicated & Isolated IPv4 ❌ Shared with thousands of unknown senders ⚠️ Dedicated, but requires manual IP cleanup
Setup & Deployment Time 60 Seconds Automated Instant (but strictly shared IPs) ❌ Days or weeks of manual Linux administration
Adaptive IP Warming Automated Gas-Pedal Algorithms ❌ None, or expensive $500/mo add-ons ❌ Manual scripts and Excel tracking
ISP Traffic Shaping Native PowerMTA & KumoMTA rules ❌ Opaque vendor throttling ❌ Complex master.cf tuning prone to lockups
Contact List Overages Zero. Send to your full list. ❌ Steep price jumps per 10k contacts Zero contact penalties
Cost at 500k emails/mo $79 / month flat $399 – $750 / month $40 cloud server + 30h sysadmin time

Take Complete Ownership of Your Email Deliverability

Join high-volume senders, SaaS companies, and ESPs who stopped compromising on shared IP pools. Deploy your dedicated bare-metal PowerMTA or KumoMTA cluster in under a minute.

Deploy Dedicated Cluster Today →
📡 Real-Time SMTP Delivery Telemetry Probe

Live simulated diagnostic probe connecting to cluster-node-07.autosmtp.io:587 via carrier-grade PowerMTA / KumoMTA kernel socket.

// 1. TCP Socket Connection Handshake [00:00.002] CONNECT relay.autosmtp.io:587 (46.105.72.90) ... CONNECTED (12.4ms) [00:00.004] <<< 220 relay.autosmtp.io ESMTP PowerMTA/KumoMTA 5.0r8 Ready [00:00.005] >>> EHLO app.autosmtp.io [00:00.006] <<< 250-relay.autosmtp.io greets app.autosmtp.io [00:00.006] <<< 250-STARTTLS [00:00.006] <<< 250-PIPELINING [00:00.006] <<< 250 SIZE 52428800 // 2. TLS 1.3 Cryptographic Cipher Handshake [00:00.008] >>> STARTTLS [00:00.009] <<< 220 2.0.0 Ready to start TLS [00:00.012] TLS Handshake Completed: TLSv1.3 / TLS_AES_256_GCM_SHA384 (256 bits) // 3. Sender Authentication & Delivery Verification [00:00.014] >>> MAIL FROM:<telemetry-probe@autosmtp.io> BODY=8BITMIME [00:00.015] <<< 250 2.1.0 Sender <telemetry-probe@autosmtp.io> OK (SPF: PASS, DKIM: 2048-bit ALIGNED) [00:00.016] >>> RCPT TO:<inbox-benchmark@gmail.com> [00:00.017] <<< 250 2.1.5 Recipient OK [00:00.018] >>> DATA [00:00.019] <<< 354 Start mail input; end with <CRLF>.<CRLF> [00:00.022] >>> . [00:00.024] <<< 250 2.0.0 OK: message queued 9E4F-A182 for immediate delivery (12.4ms total)
12.4 ms
Total Handshake
100%
SPF / DKIM / DMARC
0 Listed
34 DNSBL Zones
🧪 Raw RFC 5321 Mailbox Verification Dialogue

Deep socket-level ping verification probe against target domain MX servers without dispatching an email:

// Stage 1: DNS MX Resolution RESOLVING MX RECORDS for enterprise-corp.com ... [DNS QUERY] Type MX: Priority 10 -> mx1.enterprise-corp.com (IP: 198.51.100.44) // Stage 2: Direct RFC 5321 Socket Probe [00:00.010] CONNECT mx1.enterprise-corp.com:25 ... CONNECTED [00:00.012] <<< 220 mx1.enterprise-corp.com ESMTP Postfix [00:00.013] >>> EHLO verify.autosmtp.io [00:00.014] <<< 250-mx1.enterprise-corp.com [00:00.014] <<< 250-STARTTLS [00:00.014] <<< 250 ENHANCEDSTATUSCODES [00:00.015] >>> MAIL FROM:<verify-probe@autosmtp.io> [00:00.016] <<< 250 2.1.0 Ok [00:00.017] >>> RCPT TO:<alex.turner@enterprise-corp.com> [00:00.019] <<< 250 2.1.5 Recipient OK: Mailbox Active & Accepting Messages [00:00.020] >>> RSET [00:00.021] <<< 250 2.0.0 Reset state OK [00:00.022] >>> QUIT [00:00.023] <<< 221 2.0.0 Bye VERDICT: DELIVERABLE (Safe to Send • Zero Spam-Trap Indicator • 0% Bounce Risk)
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