Transactional SMTP alternative to Mailgun
Kingmailer SMTP is a transactional SMTP tool, that let’s you send, receive and route/ forward emails. We accept Bitcoin, PayPal and all major cards.

Simple, email-based pricing
Sign up for a 14-day trial. We accept USD and BTC.
Emails | Price | |
---|---|---|
5,000 | $29.40 /year | Buy now |
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:


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

Fast setup, easy integration
Time needed: 2 minutes.
Get up and running today. Here’s what needs to get done:
- Activate your account
After you sign up, check your email, click a link, and you’re done.
- Set up your domain
Add a couple DNS records so we know you own the domain you claim to be sending emails from.
- Start sending
You can now send, receive or route emails, using the SMTP credentials or HTTP API.
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.
5/5 Raoul B, Adept
Costumer service has been very helpful. I can pay with Bitcoin.
5/5 Jane S, IT Consultant
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.
5/5 Giovanni S, Developer
Works without problems and is affordable.
5/5 Frank N, Manager
Ready to start?
Start your free trial today.