Buy SMTP with Bitcoin

USD205.00 / 12 months

Take your email delivery to the next level

You can send, receive and route emails with our SMTP service.

Per year USD205,=


  • Clean IP address
  • Outbound emails
  • Inbound email routing
  • Email dashboard
  • Email API
  • 99.99% Uptime

All paying customers are screened manually to maintain high quality/ inbox delivery.

BEFORE buying, please sign up and test our product first.

If you have tested our SMTP service and wish to pay monthly, contact us.

Our monthly rate is USD19.99,=. Yes, we do accept Bitcoin.

Contact us if you are a returning customer for the old price.

During checkout we will only ask for your email address.


Registration/ welcome emails, Notification emails

Feedback emails, ecommerce / forum / membership site emails, Confirmation emails

Email alias / forwarding, MX email routing

Not for mass mail / bulk mail newsletters

Not for marketing /promotional newsletters / announcements

By purchasing a plan, you agree to our terms of service, privacy and spam policy.


Free trial has a 5 recipients limit, and the free trial is for testing our SMTP service.

The limits will be changed/removed after upgrade + after we have whitelisted your Kingmailer-account.

Please understand these limits are there to protect our servers. Our SMTP service is not for spamming.

You can contact us with your questions anytime, or via private DMs on Twitter @KingmailerCo.

You can buy with Bitcoin.

By purchasing a plan you’ll get to send 20,000 emails per month.

If you have questions or need support, please send us an email at

You’re 100% backed by our 30-day money-back guarantee.

It may take up to 24 hours to process your payment. You will get an email notification as soon as the service is active.

Additional information

Free Trial?

Yes, for 14 days.

Emails per month

20,000 by default, you can purchase additional email volume.

For spamming yes/no?


For sending mass mail / bulk mail?


To send marketing emails / cold emails?


Email APIs, SMTP Relay, and Webhooks


Inbound Email Routing


Email Tracking and Analytics


99.99% Guaranteed Uptime SLA


1 Dedicated IP


Email Address Validations


Inbox Placement Tests


Message Retention

Min 1 to max 30 days, 3 days by default.

Detailed Documentation


24/7 Ticket Support


Live Phone Support


Rapid Fire Burst Sending


Custom Features