Buy transactional SMTP server

Looking to buy SMTP? Our SMTP service is recommended for e-commerce sites, news organizations, membership sites, and online forums. You can use our SMTP service to send, receive and route / forward emails.

Email support
Clean IP address
Email dashboard
Simple SMTP pricing
SMTP Username/Password
Email API
Secure email delivery
Comes with your Kingmailer-account.

How much does Kingmailer cost?

Price /monthDiscount
11.95 /month0%Buy now
$79 /year45%Buy now
20,000 emails per month. Unlimited recipients. For Routing & Transactional emails only. Change the quantity to purchase additional months. Not for sending mass mail or newsletters. Have questions? Send us an email We accept Bitcoin, Ethereum, Bitcoin Cash, Litecoin, Dogecoin, PayPal and all major cards.

Easy to troubleshoot emails

In your Kingmailer dashboard, you can click on each email to troubleshoot. Kingmailer logs and retains data of your emails, this is very useful when you need to troubleshoot your emails.

Here are a few screenshots to give you an idea:

Incoming messages
Spam check
Spam status
Spam Check details
Spam score

This is already pre-configured in your account, give it a try.

This is how your dashboard looks like, super easy to monitor your emails:

View your recent processed emails
Meta data

How does it work?

After signing up with Kingmailer you will have your own SMTP mail server, with SMTP username and password / Email API. You can use your new SMTP server and integrate with your web apps for example WordPress, Magento or iOS/Android apps.

The SMTP server is tied to your domain, make sure to add your domain first and verify its ownership by adding the SPF and DKIM records (this will be provided to you in your account).

Once you have added/verified your domain, enter the following into your SMTP configuration to start sending transactional emails:

Type of encryption: TLS
SMTP Port: 587, 465, 25 or 2525
SMTP Authentication: Yes
SMTP username and password

After following these steps, all of your transactional emails will be relayed via Kingmailer and delivered to your customers inbox.

Customers who are already using Kingmailer

We used Sendgrid before, but we had many issues and were looking for an alternative. We stumbled on Kingmailer and got great support setting op our account from Navin. The service works way better that Sendgrid. Where we had issues with sending emails to Hotmail and sometimes sending was blocked, we have had no problem with Kingmailer.


Costumer service has been very helpful. I can pay with Bitcoin.


Easy setup, useful dashboard, no delivery failures due to being on spam lists (unlike say, Sendgrid), API & SMTP relay. Once it’s set up, I can just forget it and be sure that it’ll work.


Works without problems and is affordable.


Did you search for: Buy SMTP, buy SMTP relay, mail relay service, buy mail relay or email delivery service? Just curious.

What’s the reason? Doing research on SMTP services, unhappy with your current SMTP service provider or …? Leave a comment and let us know, it will help us understand you better as a customer.

Well, either way you have landed on the right place.

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