SMTP server/SMTP Services

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Why Choose Kingmailer?

100% Sender score. Transactional email for web applications - SMTP Server


Easily integrate your transactional emails

  • Powerful API
  • SMTP Server
  • Plugins for WordPress, WooCommerce, Prestashop and many more.


Optimize the deliverability of your emails

  • Manage multiple domains
  • Monitor your emails reputation
  • Personalized SPF, DKIM and DMARC authentication


Track & Analyze Performance

  • History of all your messages with your contacts
  • Monitor email performance in real time
  • Get detailed statistics on opens, clicks, bounces, etc.
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    Have a question? Our support team is available 24/7/365.

    Features & Details

    Expert SMTP Server You Can Trust

    Real-time results

    Get up-to-the-minute analytics on your message deliverability and engagement metrics.

    Email statistics

    Monitor all your email logs and statistics on deliverability, open rates, click rates and more.

    Webhooks & Integrations

    Manage your email statistics using webhooks and integrate Kingmailer SMTP with all your tools: WordPress, PrestaShop, WooCommerce and more.

    Flexible APIs

    Create customized, dynamic messages using a powerful API.

    Optimal deliverability

    Ensure your welcome messages, order confirmations, shipping notifications, app alerts, and other important emails reach the inbox.

    Message Archiving & Logs

    Archive and search historical transactional emails.

    Pricing SMTP server

    Rely on Kingmailer's API integrated SMTP server service for all your transactional emails.

    SMTP Server Basic

    $ 25

    per month

    • Free setup
    • 2 GB storage
    • 90 days history
    • Unlimited smtp domains
    • Unlimited smtp emails
    • Unlimited smtp servers
    • 99% Inbox-rate
    • Email support
    • NOT for bulk email
    Order Now
    SMTP Server Pro

    $ 66

    per month

    • Free setup
    • 5 GB storage
    • 180 days history
    • Unlimited smtp domains
    • Unlimited smtp emails
    • Unlimited smtp servers
    • 99% Inbox-rate
    • Email support
    • NOT for bulk email
    Order Now
    SMTP Server Business

    $ 108

    per month

    • Free setup
    • 10 GB storage
    • 365 days history
    • Unlimited smtp domains
    • Unlimited smtp emails
    • Unlimited smtp servers
    • 99% Inbox-rate
    • 24/7 email support
    • NOT for bulk email
    Order Now

    Kingmailer has a perfect sending score of 100%, and yes, we're very proud
    You can verify this Check Sender Score

    Frequently Asked Questions

    Got a question? We've got answers. If you have some other questions, contact us using email.

    Do you offer a free trial?

    We can create a demo account for you, with all features. You can use is to test our product. Use it for however long you need, it doesn’t expire.

    What payment types do you accept?

    We accept payments via Visa, MasterCard, American Express, Diners, and JCB. We do not accept PayPal or Purchase Orders.

    Why is Kingmailer for transactional email only?

    By focusing on transactional email only, ISPs can build a reputation on consistent, high engagement messages. This allows us to have extremely fast delivery to the inbox without tarnishing our reputation from large promotional email campaigns that sit in the queue.

    Can I cancel my subscription?

    You can cancel your subscription anytime in your account. Once the subscription is cancelled, you will not be charged next month. You will continue to have access to your account until your current subscription expires.

    How long are your contracts?

    Currently, we only offer monthly subscription. You can upgrade or cancel your monthly account at any time with no further obligation.

    Can I request refund?

    Unfortunately, not. We do not issue full or partial refunds for any reason.

    What is allowed to send?

    At the moment we only allow welcome emails, password reset emails, notifications, weekly digests, receipts and invoices. For a full list of what is not allowed, please refer to our Terms of Service. Please contact for assistance.

    Do you accept Western Union or banking transfers?

    Kingmailer can accept these payment methods in certain situations. Please contact for assistance.

    Is bulk email allowed?

    No. We don't support bulk email at the moment.

    Request Demo

    Please submit the form below, we will review your application manually. After reviewing your submission, an invitation will be sent to your email address, to join Kingmailer.

    Step 1 of 2

    • Types of emails allowed:
      Welcome emails
      Password reset emails
      Weekly Digests
      Receipts and invoices

      NOT allowed:
      Promotional emails
      Bulk email marketing


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