Cheap SMTP Server. Forever Free. Upgrade or cancel anytime.

  • $0 p/mo
  • 5 Emails p/hour limit
  • 3,600 Free emails p/mo
  • $5 p/mo
  • No hourly email limit
  • Max 2,500 contacts
  • 50,000 emails p/mo
  • $10 p/mo
  • No hourly email limit
  • Max 5,000 contacts
  • 100,000 emails p/mo

Best designed for Transactional emails and SMTP email relays.

All plans include

  • Data Recovery
  • Email Archiving
  • Email Monitoring
  • Queue Manager
  • Response Management
  • Routing
  • Signature Management
  • Spam Blocker
  • Spam Check
  • Whitelisting / Blacklisting


Why so cheap?

We don't believe that you should be paying more than $5 or $10 per month for SMTP servers. If you're sending transactional emails and/or you're low on budget, we hope you'll give us a try.

What payment types do you accept?

We accept payments via Bitcoin, Visa, Paypal, MasterCard, American Express, Diners, and JCB.

Do you accept Bitcoins?

Yes, we do.

Can I cancel my subscription?

You can cancel your subscription anytime, just send us an email

Can I request refund?

Yes, no problem, send us an email

Do you accept Western Union or banking transfers?

Kingmailer can accept these payment methods in certain situations. Please contact for assistance.