Take your email delivery to the next level

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.

Kingmailer.co is a Transactional SMTP only service.

We accept Bitcoin, Ethereum, Dogecoin, PayPal and all major cards.

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

If you have questions or need support, please send us an email at support@kingmailer.co.

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

You will be redirected to 2Checkout or Opennode (depending on your payment currency) to complete your purchase securely. It may take up to 24 hours to process your payment. You will get an email notification as soon as the service is active.

Payments are charged in USD. Payment provider fees may apply.

Customers who are already using Kingmailer

How does Kingmailer compare?

$14.95 /mo$17.08 /mo$35 /mo
Pricing based on annual payments. Compared with Sendgrid’s Essential Email API plan and Mailgun’s Foundation plan.

Have questions?

What payment methods do you accept?

We accept Bitcoin, Ethereum, Dogecoin, PayPal and all major credit and debit cards. Your payment information is stored and processed securely by 2Checkout and never reaches our servers.

Can I buy Transactional SMTP here?


Can I use this SMTP service for sending mass / bulk mail?

No, we do not offer our service for sending mass / bulk mail.

Do you accept Bitcoin, Ethereum or Dogecoin?


Will I have my own SMTP username and password?

Yes, after signing up, verifying your domain, your own SMTP username and password will be ready for you to use. All of your emails will be logged and easily viewed in your own email dashboard. You will also have your own Email API.

Can I use this with a WordPress SMTP plugin?

Yes. We also have our own WordPress plugin, just search Kingmailer SMTP in the WordPress directory. It works with our HTTP API.

Do I need to have a domain for this?

Yes. In order to be able to use our SMTP service, you will need to have your own domain. You will need to verify the domain and add a few DNS records (at least SPF and DKIM), before it’s good to go.

Do you offer forever free trials?

No. You can try the service for 14 days. No credit card required.

Can I ask for a refund?

Yes, no problem.

Will my emails go to the spam/junk folder?

We have a 99% inbox rate.

Can I send/receive emails in my email address?

Yes, this is possible. You will need to add our MX records to your DNS and configure routing. Don’t worry, we’ll help you with this.

Can I upload my list here and start emailing?

No. We do not provide a way for customers to upload their subscribers onto our platform.

Is it allowed to send spam?

No, we do not allow any form of spam.