SMTP Pricing

Choose the right plan for your business. All plans include high deliverability, privacy-focused service, and full SMTP support. Pay securely with Bitcoin, USDT, or other cryptocurrency.

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Plans & Pricing

Choose your plan

Monthly Volume Price per year Price per month
Up to 5,000 emails $49/year —
Up to 10,000 emails $79/year —
Up to 20,000 emails $159/year —
Up to 50,000 emails $489/year $49/month
Up to 100,000 emails $989/year $99/month
100,000+ emails Custom pricing Custom pricing

All plans include: Clean IP addresses • 99% inbox rate • Email API & SMTP access • WordPress plugin • Email dashboard & analytics • Inbound & outbound routing • DKIM & SPF support • No-KYC, privacy-focused • Email & Telegram support

Payment Methods

We accept cryptocurrency

₿
Bitcoin (BTC)
₮
USDT
Ɱ
Monero
◈
Other Crypto

Privacy matters: Pay with crypto for complete anonymity. We don't require KYC (Know Your Customer) verification.

Features

What's included in every plan

📬
High Deliverability

Maximum inbox placement with optimized infrastructure.

  • Clean, maintained IP addresses
  • 99% inbox rate
  • 10/10 Mail Tester score
  • Optimized sending infrastructure
🔒
Privacy & Security

Your data stays private. No scanning, no selling.

  • No-KYC service
  • No IP leaks
  • We don't scan your emails
  • TLS encryption for all connections
⚡
Easy Integration

Connect your platform in minutes, not hours.

  • Simple SMTP credentials
  • RESTful API
  • WordPress plugin
  • Support for all major platforms
📊
Email Dashboard

Complete visibility into every email you send.

  • View all sent/received emails
  • Detailed delivery tracking
  • Spam score analysis
  • Full email headers and logs
Usage Policy

What you can & cannot send

KingSMTP is designed for transactional emails – automated messages triggered by user actions or system events.

✓ Supported Email Types

  • Registration and account verification
  • Password resets and security alerts
  • Order confirmations and receipts
  • Shipping notifications
  • Account notifications and alerts
  • Two-factor authentication (2FA)
  • System-generated notifications
  • Support ticket updates
  • Invoice and billing emails
  • MX routing and email forwarding

✗ Not Supported

  • Marketing newsletters
  • Promotional campaigns
  • Bulk email blasts
  • Mass announcements
  • Cold outreach campaigns
  • Spam, phishing, or scamming
  • Unsolicited commercial email

Why this matters: By focusing exclusively on transactional emails, we maintain clean IP addresses and high deliverability rates.

Try Before You Buy

Free trial details

🎁
What's Included
  • 7 days of full access
  • All features unlocked
  • Test with up to 5 recipients
  • No credit card required
  • Full dashboard access
🚀
How It Works
  • Sign up at kingmailer.org/register
  • Verify your domain with DNS records
  • Test our service with your app
  • Upgrade anytime to remove limits

Important: The 5-recipient limit during trial protects our server reputation. After you upgrade, we'll manually whitelist your account and remove all limits. By default, all accounts have 0 recipients upon sign up.

FAQ

Frequently asked questions

How does pricing work?
Choose a plan based on your monthly email volume. If you exceed your plan limit, contact us to upgrade. We'll work with you to find the right solution.
Can I pay with Bitcoin or cryptocurrency?
Yes! We accept Bitcoin, USDT, Binance Pay, and other cryptocurrencies. We also accept credit cards and PayPal.
Is there a setup fee?
No. All plans include free setup and configuration assistance.
What happens if I exceed my plan limit?
Contact us and we'll help you upgrade to a higher tier. We monitor usage and will reach out proactively if you're approaching your limit.
Do you offer refunds?
Yes. If you're not satisfied within the first 7 days, contact us for a full refund. All refunds are done in USDT BEP20.
Can I cancel anytime?
Yes. You can cancel your subscription at any time. Annual plans are prorated if canceled early.
What if my business/niche is high-risk?
Some industries pose higher risks to email reputation (gambling, crypto, adult content, etc.). We may offer different pricing for these businesses to account for additional monitoring and reputation management. Contact us to discuss your specific case.
Will my emails go to spam?
We maintain a 99% inbox rate through careful IP management, authentication protocols (DKIM, SPF), and strict anti-spam policies.
Can I use this for my WordPress site?
Yes! We have a dedicated WordPress SMTP plugin that works even if your host blocks port 25. It uses HTTP protocol for maximum reliability.
Do I need technical knowledge to set this up?
No. Setup takes about 2 minutes and involves adding a couple of DNS records. We provide step-by-step instructions and support if needed.
What's the difference between transactional and marketing emails?
Transactional emails are triggered by user actions (password resets, order confirmations, etc.). Marketing emails are promotional content sent to lists of subscribers. We only support transactional emails.

Need a Custom Plan?

Sending over 100,000 emails per month? Contact us for custom pricing, dedicated IP addresses, priority support, and volume discounts.

Email Us Telegram Support
Legal

Terms & Policies

By purchasing a plan, you agree to our Terms of Service, Privacy Policy, and Spam Policy. All policies are designed to protect both our service quality and your privacy.