See SMTPS.IO in action

A quick visual tour of enterprise-grade email delivery — from first send to full deliverability.

90-second product tour — video coming soon

Reliable by design
Send millions of emails with confidence

A reliable, scalable SMTP relay for individuals and businesses of all sizes.

SMTPS.IO home
Integrate fast
Connect in minutes, not days

Standard SMTP on port 2525 with STARTTLS — drops into any language or framework.

Integration code sample
Land in the inbox
DKIM, SPF & DMARC — built in

Authentication, smart routing and reputation management keep your mail out of spam.

Deliverability
Free tools
Everything you need to deliver

SPF, DKIM and DMARC generators & checkers, MX lookup, Test SMTP and a Bulk Sender.

Email tools
One dashboard
Manage it all in one place

SMTP credentials, sending domains, live analytics and delivery logs.

Dashboard
Simple pricing
From startups to high volume

Transparent plans, one-time payment, no hidden fees.

Pricing
Reliability
Live status you can trust

Real-time platform status — 99.9% uptime, monitored around the clock.

Status page

Start sending today

Create your account and send your first email in minutes.

Get Started Free