Professional SMTP Relay Service for Business

Reliable, secure email delivery for your business applications, alarm systems, copiers, and web forms. No more bounced emails or delivery issues.

Sign Up Now Learn More

99.9% Delivery Rate

Trusted by businesses worldwide

99.9%

Uptime Guarantee

24/7

Technical Support

DKIM

Email Authentication

Business

Sender Domains Only

Enterprise-Grade Email Delivery

Everything your business needs for reliable email delivery

DKIM & SPF Authentication

Automatic DKIM signing and SPF records ensure your emails are authenticated and trusted by receiving servers.

Dedicated IP Options

Get your own dedicated IP address for maximum deliverability and reputation control.

Real-time Analytics

Monitor delivery rates, bounces, and performance with detailed reporting and analytics.

TLS Encryption

All email transmissions are secured with TLS encryption for maximum security.

Easy Integration

Simple SMTP configuration works with any application, device, or system that sends email.

Expert Support

Get help from our email delivery experts whenever you need assistance.

Perfect for Business Applications

Smarthost.MX is designed for legitimate business email needs

Alarm & Alert Systems

Security systems, monitoring equipment, and IoT devices that need to send critical alerts and notifications.

Scan-to-Email Systems

Office copiers, multifunction printers, and document scanners that email scanned documents to users.

Web Applications

Contact forms, user registration confirmations, password resets, and transactional emails from your websites.

System Notifications

Server monitoring, backup completion notices, database alerts, and automated system reports.

Business Domains Only

Smarthost.MX only accepts registered business domains and email addresses.
Free email services (Gmail, Yahoo, Hotmail, etc.) are not permitted to ensure service quality and prevent abuse.

Why Choose Smarthost.MX?

Built for businesses that need reliable email delivery

Business-Focused

Designed specifically for legitimate business email needs, not bulk marketing or spam.

High Deliverability

Our reputation management and authentication ensure your emails reach their destination.

Easy Setup

Simple SMTP configuration that works with any device or application in minutes.

Simple, Transparent Pricing

Choose the plan that fits your business needs

Small Business

$14.99/month $143.90/year

Save $35.98 per year
  • 10,000 emails/month
  • 5 sender addresses
  • 1 domains
  • Shared IP
  • DKIM & SPF
  • Email support
Get Started

Standard Business

$29.99/month $287.90/year

Save $71.98 per year
  • 25,000 emails/month
  • 50 sender addresses
  • 5 domains
  • Shared IP
  • DKIM & SPF
  • Priority support
Get Started

Enterprise

$59.99/month $575.90/year

Save $143.98 per year
  • 100,000 emails
  • 1000 senders
  • 10 domains
  • Dedicated IP
  • DKIM & SPF
  • Priority support
Get Started

Custom Pricing Available

Contact Us for a Quote

Frequently Asked Questions

Get answers to common questions about our SMTP relay service

An SMTP relay service acts as an intermediary between your applications and email recipients. Instead of sending emails directly from your servers, you route them through our specialized infrastructure that's optimized for deliverability, authentication, and reputation management.

You can be up and running in minutes! After signing up and verifying your email address, you'll receive SMTP credentials that you can immediately configure in your applications, devices, or systems.

Yes! We automatically handle DKIM signing for all outbound emails and provide guidance on setting up SPF records for your domains. This ensures maximum deliverability and helps prevent your emails from being marked as spam.

Our service is designed for legitimate business communications including transactional emails, system notifications, alerts from monitoring systems, scan-to-email from office equipment, and automated reports. We do not allow bulk marketing emails or spam.

No, we only accept business domains and email addresses. Free email providers (Gmail, Yahoo, Hotmail, etc.) are not permitted to ensure service quality and prevent abuse. You must own or control the domain you're sending from.

If you approach your monthly limit, we'll notify you via email. Once you reach your limit, additional emails will be queued until the next billing cycle or you can upgrade to a higher plan. We never charge overage fees without prior approval.

Have more questions?

Contact Our Team

Ready to Improve Your Email Delivery?

Join hundreds of businesses that trust Smarthost.MX for their critical email delivery needs.

Sign Up Now Existing Customer Login