KingSMTP.com

Category: Email delivery

  • Postmarkapp Alternative Crypto

    Are you searching for a reliable Postmarkapp alternative that accepts cryptocurrency payments? Many businesses love Postmark’s deliverability but need more flexible payment options. With our crypto-friendly email delivery service, you can pay using Bitcoin and other cryptocurrencies while enjoying the same professional SMTP and API features.

    Features comparison: KingSMTP vs Postmark

    Feature / AspectKingSMTPPostmark
    Primary PurposeTransactional email deliveryTransactional email delivery
    Delivery MethodSMTP + REST APISMTP + REST API
    Speed & ReliabilityFast and reliableFast and reliable
    Privacy & Data ControlHigh — no unnecessary tracking; enhanced user privacyStandard — GDPR-compliant, tracking optional
    Payment OptionsBitcoin, Ethereum, USDT, Monero, any other CryptoTraditional payments only
    PricingSubscription-basedSubscription-based
    Analytics & ReportingDelivery logs, status trackingAdvanced dashboards & analytics
    Compliance & CertificationsPrivacy-focusedSOC 2, GDPR, HIPAA
    SupportEmail, TelegramEmail, knowledge base

    Pricing comparison: KingSMTP vs Postmark

    Emails per monthKingSMTPPostmark
    5,000 emails$49 /year Not available
    10,000 emails$79 /year$180 /year
    20,000 emails$159 /year or $19 /moNot available
    50,000 emails$490 /year or $49 /mo$60.50 /mo
    100,000 emails$890 /year or $99 /moNot available
    125,000 emails$1240 /year or $124 /mo$1380 /year or $115 /mo

    Why Use a Postmarkapp Crypto Alternative?

    • Crypto SMTP Payments – Skip credit cards and banking restrictions. Pay for email services with Bitcoin, USDT, or other cryptocurrencies.
    • High Deliverability – Just like Postmark, our platform is built for transactional email, ensuring your messages land in the inbox.
    • Developer Friendly – Easy SMTP and API integration with clear documentation for a quick switch from Postmark.
    • Privacy First – We respect your data. No unnecessary tracking, just secure and reliable email delivery.

    Who Is This For?

    • Startups that want affordable email delivery with crypto payments.
    • Privacy-focused companies who don’t want card processors involved.

    Postmark Alternative with Bitcoin Payments

    If you’ve been looking for a Postmark alternative with Bitcoin, our service is designed for you. We combine reliable email infrastructure with cryptocurrency payments, giving you the freedom to manage your emails without borders.

    Final Thoughts

    Postmark is a great service, but if you need an SMTP provider that accepts crypto, we’re the solution. With fast email delivery, fair pricing, and Bitcoin payments, you’ll have everything you need to send transactional and marketing emails at scale.

    Try our Postmark alternative with crypto payments today and take control of your email delivery.

  • Meilleur serveur SMTP gratuit

    Commencez à envoyer, recevoir, acheminer / transférer vos e-mails, en utilisant notre serveur SMTP gratuit. Après votre inscription, vous aurez votre nom d’utilisateur SMTP et votre mot de passe SMTP gratuits. Et aussi l’API Web SMTP gratuite.

    ✓ Support par e-mail
    ✓ Nettoyer l’adresse IP
    ✓ Email dashboard
    ✓ Tarification SMTP simple
    ✓ SMTP Username/Password
    ✓ Email API
    ✓ Livraison sécurisée des e-mails
    Livré avec votre compte Kingmailer.
    Essai gratuit

    Tarification simple par e-mail

    Inscrivez-vous pour un essai de 14 jours. Nous acceptons les USD et BTC.

    Prix ​​par mois
    $19,95 /moisAcheter maintenant
    $79 /annéeAcheter maintenant
    Envoyez jusqu’à 20 000 e-mails par mois à jusqu’à 5 000 destinataires mensuels uniques. Pour les e-mails de routage et transactionnels uniquement. Pas pour l’envoi de courriers électroniques ou de newsletters en masse. Besoin d’un plan personnalisé ou avez des questions? Envoyez-nous un e-mail info@kingmailer.co. Nous acceptons Bitcoin, Ethereum, Bitcoin Cash, Litecoin, Dogecoin, PayPal et toutes les principales cartes.

    Easy to troubleshoot emails

    In your KingSMTP dashboard, you can click on each email to troubleshoot. KingSMTP 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
    Extra details of your message
    Spam Check details
    Spam score

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

    Comment ça marche?

    After signing up with Kingmailer you will have your own free SMTP mail server, with username and password. You can use the SMTP server and integrate with your web apps for example WordPress.

  • MailGun similar services

    Why choose Kingmailer over Mailgun?

    With Kingmailer you don’t need to purchase a dedicated IP or “managed email service” or pay extra for “great delivery” to enjoy great deliverability. Great email delivery is already included in your plan, doesn’t matter which plan you use. You can also pay with Bitcoin.

    Transactional emailsYes
    Email routingYes
    Newsletters / bulk mailsNo
    Kingmailer SMTP is for Transactional emails only.
    Price
    $19.95 /monthBuy now
    $239.40 $79 /yearBuy now
    $478.80 $99 /2-yearsBuy now
    20,000 emails per month. 5,000 monthly unique recipients. For Routing & Transactional emails only. Not for sending mass mail or newsletters. Have questions? Email us support@kingmailer.co. We accept Bitcoin, Ethereum, Dogecoin, PayPal and all major cards. Check our Pricing page for more details.

    FAQ

    How can I upgrade my account?

    Send us an email to upgrade your account.

    How does Kingmailer work?

    Kingmailer is an email delivery and deliverability service that empowers businesses to easily send email from their (web) apps. It’s free to sign up and easy to get started.

    How does your billing work?

    You will be billed every 30 days. We accept PayPal and all major credit and debit cards. Your payment info is stored and processed securely by 2Checkout and never touches our servers.

    How do I send emails with Kingmailer?

    Since Kingmailer has both an HTTP API and an SMTP endpoint, you can choose to send the way you’d like. Both ways have their advantages… SMTP is easy to setup and often plug and play, but API is much more reliable at scale. If you’re building an application, we recommend using our HTTP API.

    How many dedicated IP’s do I need? Can I get more?

    You don’t actually need a dedicated IP when using Kingmailer, because great email delivery is already included in your plan, no additional investment is needed for this from your end.

    How many users come with each plan?

    Every Kingmailer plan (free and paid) allows you to add as many users as you need to your account at no additional cost. We think it’s much easier this way to manage the account with your team, without sharing login credentials.

    I want to test Kingmailer first. How can I do that?

    The free trial is ideal for those looking to test out the service. Keep in mind that the free trial has a max 20 emails per hour limit and a max 20 recipients limit. If you reach these limits, your email traffic will be paused. The free plan has 30 days of log retention so you can easily troubleshoot issues.

  • You don’t really need Outlook 365 or G Suite

    If you’re a solo founder, an indie hacker, a bootstrapper, a webmaster, a developer or if you have multiple domains, and/or you need to manage multiple inboxes, then this article might be perfect for you.

    We’ll show you how you can send and/or receive emails in your Gmail with your custom domain email addresses.

    Here’s how to get started. If you need help, just send us an email info@kingmailer.co:

    1. Create Endpoints

      An Endpoint is where you want the emails to be delivered, it can be your Gmail-address.
      In your Kingmailer-account go to Routing (1), click on Address Endpoints (2) and then on Add your first address endpoint (3).

    2. Enter your email address

      Enter your email address (1) and click Create address endpoint (2).

    3. Create a Route

      The Endpoint is there, so now you can create any email address you like, all emails send to this address will be delivered (forwarded/routed) to the Endpoint aka your Gmail address.

      Enter a username (1) for your email address for example info@domain so there you’ll enter just info. Select the domain (2) (which you already verified in your account: SPF, DKIM, MX and Return Path). Choose the Endpoint (3) which you created earlier.

    4. Sending Emails from Gmail

      Go to Settings > Accounts and Import > Add another email address > Send mail as

    5. Add your email address

      Enter your name and your email address, allow Treat as an alias and then Next Step

    6. Enter the SMTP credentials

      You can use these settings:

      SMTP Server: kingmailer.org
      Username: enter your SMTP username
      Password: enter your SMTP password
      Port: 587, 465, 25 or 2525
      Secure connection: TLS

    So there you have it, you can send and receive emails in your Gmail using your own domain. Create as many email addresses you want, have the emails delivered to your Gmail, at no extra costs.

    In this tutorial I have worked with Gmail, but you can use any other provider such as Hotmail, Yahoo or Proton etc.

  • Postmark alternative Crypto

    Compare KingSMTP and Postmark side by side to see which transactional SMTP email service is the better fit for your business.

    Feature / AspectKingSMTPPostmark
    Primary PurposeTransactional email deliveryTransactional email delivery
    Delivery MethodSMTP + REST APISMTP + REST API
    Speed & ReliabilityFast and reliableFast and reliable
    Privacy & Data ControlHigh — no unnecessary tracking; enhanced user privacyStandard — GDPR-compliant, tracking optional
    Payment OptionsBitcoin, Ethereum, USDT, Monero, any other CryptoTraditional payments only
    PricingSubscription-basedSubscription-based
    Analytics & ReportingDelivery logs, status trackingAdvanced dashboards & analytics
    Compliance & CertificationsPrivacy-focusedSOC 2, GDPR, HIPAA
    SupportEmail, TelegramEmail, knowledge base
    Emails per monthKingSMTPPostmark
    5,000 emails$49 /year Not available
    10,000 emails$79 /year$180 /year
    20,000 emails$159 /year or $19 /moNot available
    50,000 emails$490 /year or $49 /mo$60.50 /mo
    100,000 emails$890 /year or $99 /moNot available
    125,000 emails$1240 /year or $124 /mo$1380 /year or $115 /mo

    Why Look for a Postmark Alternative?

    When it comes to transactional email, Postmark has built a reputation for speed and reliability. But not every business fits into the same box. Many startups, small businesses, and privacy-conscious teams are looking for an alternative that delivers the same focus on transactional email without the high costs or the rigid payment models of traditional providers.

    That’s where KingSMTP comes in.

    Founded in 2017 and built on open-source technology, KingSMTP was designed from the ground up for businesses that value privacy, affordability, and flexibility. Unlike Postmark, KingSMTP embraces cryptocurrency payments alongside traditional billing, giving global businesses — especially those underserved by mainstream payment systems — a straightforward way to send critical emails.

    With KingSMTP, you still get what matters most:

    • Fast and reliable email delivery for password resets, notifications, invoices, and more.
    • A simple subscription model, paid annually, without complex overage fees.
    • Privacy-first design, ensuring your email data isn’t over-collected or over-tracked.
    • Personalized support, where you can actually talk to a real person if you need help.

    If you love the transactional focus of Postmark but want an option that’s more affordable, crypto-friendly, and privacy-minded, KingSMTP is a strong alternative.

    FAQ

    How can I upgrade my account?

    Send us an email to upgrade your account.

    How does KingSMTP work?

    KingSMTP is an email delivery and deliverability service that empowers businesses to easily send email from their (web) apps. It’s free to sign up and easy to get started.

    How do I send emails with KingSMTP?

    Since KingSMTP has both an HTTP API and an SMTP endpoint, you can choose to send the way you’d like. Both ways have their advantages… SMTP is easy to setup and often plug and play, but API is much more reliable at scale. If you’re building an application, we recommend using our HTTP API.

    How many dedicated IP’s do I need? Can I get more?

    You don’t actually need a dedicated IP when using KingSMTP, because great email delivery is already included in your plan, no additional investment is needed for this from your end.

    How many users come with each plan?

    Every KingSMTP plan (free and paid) allows you to add as many users as you need to your account at no additional cost. We think it’s much easier this way to manage the account with your team, without sharing login credentials.

    I want to test KingSMTP first. How can I do that?

    The free trial is ideal for those looking to test out the service. Keep in mind that the free trial has a max 20 emails per hour limit and a max 20 recipients limit. If you reach these limits, your email traffic will be paused. The free plan has 30 days of log retention so you can easily troubleshoot issues. By default it has 0 recipients.

  • MailChannels alternative

    Why choose Kingmailer over MailChannels?

    Kingmailer solves your spam (inbound or outbound filter) problem with its build-in Spam filter. Kingmailer uses SpamAssassin – an open source solution for combating email spam (unsolicited bulk spam).

    Free Trial

    SpamAssassin uses a variety of mechanisms to detect spam, including:

    Text analysis Bayesian filtering
    DNS block listsDNSBL or RBL databases
    Source SpamAssassin Wiki
    Emails /moPrice /moPrice /year
    5,000N/AUSD49
    10,000N/AUSD79
    20,000USD19USD159
    30.000USD29USD289
    40,000USD39USD389
    50.000USD49USD489
    Pay with Bitcoin, Binance Pay, USDT or other cryptocurrency. Larger plans available. Please sign up and test our service first. Contact us info@kingsmtp.com or via Telegram @ KingSMTPcom

    Easy to troubleshoot emails

    In your KingSMTP dashboard, you can click on each email to troubleshoot. KingSMTP 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
    Extra details of your message
    Spam Check details
    Spam score

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

    Inbound filtering

    FeaturesMailChannelsKingmailer
    Keeping up with spammers✔✔
    30 minute support response, 24/7✔✔
    Where did that email go?email dashboardemail dashboard

    FAQ

    Does Kingmailer have Inbound filtering?

    Yes. We have inbound filtering.

    Does Kingmailer have outbound filtering?

    Yes. We have outbound filtering.

    How are emails filtered?

    Our email servers have built-in SpamAssassin technology.

    I wat to pay with Bitcoin, is this possible?

    Yes, this is possible, we do accept Bitcoin.

  • Sendgrid alternative Crypto

    Why choose Kingmailer over Sendgrid?

    Better inbox rate + easier user interface.

    Free Trial
    Emails /moPrice /moPrice /year
    5,000N/AUSD49
    10,000N/AUSD79
    20,000USD19USD159
    30.000USD29USD289
    40,000USD39USD389
    50.000USD49USD489
    Pay with Bitcoin, Binance Pay, USDT or other cryptocurrency. Larger plans available. Please sign up and test our service first. Contact us info@kingsmtp.com or via Telegram @ KingSMTPcom

    Easy to troubleshoot emails

    In your KingSMTP dashboard, you can click on each email to troubleshoot. KingSMTP 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
    Extra details of your message
    Spam Check details
    Spam score

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

    Their Essentials plan (cheapest what they offer, $14,95 p/mo), only gives 3 days of Search email activity… this can never be enough, forcing you to buy more days. A dedicated IP must be purchased (price $89,95 p/mo).

    Kingmailer SMTP offers a simple interface and much much faster setup to start sending, receiving and routing emails.

    This side-by-side comparison is based on features listed on Sendgrid’s pricing page:

    FeaturesSendgridKingmailer
    Straightforward Integration
    SMTP and API✓✓
    Interactive API Docs✓✓
    Setup Guide✓✓
    Comprehensive Client Libraries✓✘
    Knowledge Center✓✘
    Technical Support✓✓
    Trusted Deliverability & Performance
    Purpose-Built Mail Transfer Agent✓✓
    Email Address Validation API✘✘
    Globally Distributed Architecture✓
    Reputation & Delivery Visibility✓✓
    Suppression Management✓✓
    Dedicated IP Addresses✘✘
    Automated, dedicated IP warm up✘✘
    Dedicated IP Pooling✘✘
    Domain Authentication (SPF/DKIM)✓✓
    Link Branding✓✓
    Reverse DNS✘✓
    Universal Links✓✓
    Actionable Analytics
    Real-Time Analytics✓✓
    Engagement Tracking✓✓
    ISP Feedback Loop Data✓✓
    Advanced Statistics✓✓
    Subuser Comparison Statistics✘✓
    Searchable Email Activity3 days included30 days included
    Additional Email Activity HistoryAvailable for
    purchase    		Available for
    purchase
    Event Webhook✓✘
    Inbound Parse Webhook✓✓
    Expertise & Support
    Technical SupportTicket & chat supportEmail, Facebook messenger, WhatsApp
    Access to Expert ServicesAvailable for purchase✓
    Dedicated Customer
    Success Manager    		✘✓
    Productive Collaboration
    Dynamic Templates✓✘
    Email Content Testing✘✘
    Teammate Permissions1 team mate✓
    API Key Permissions✓✓
    Subuser Management✘✓
    Privacy & Security
    Two-Factor Authentication✓✘
    IP Access Management✓✓
    TLS encryption✓✓
    SOC 2 Type II certification✓✘
    Privacy Shield Certification
    and GDPR Compliance    		✓✓
    Contact us info@kingmailer.co

    FAQ

    How does Kingmailer work?

    Kingmailer is a cloud-based SMTP provider that acts as an email delivery engine, allowing you to send email without the cost and complexity of maintaining your own email servers. Kingmailer manages the technical details of email delivery, like infrastructure scaling, ISP outreach, reputation monitoring, and real-time analytics.

    How does the free trial work?

    You can send 20 transactional emails to max 20 email recipients with your free account, which is perfect for testing purpose. If you need to send more than that, you can easily upgrade to a paid plan.

    How do you measure the number of emails I send?

    Every time you send one email to one recipient, it’s deducted as one email credit from your paid plan. This occurs whether the email is ultimately deferred or sent to spam by the inbox provider.

    What happens if I go over my plan?

    If you send more emails than your plan allows within a given billing period, you will be charged a small overage fee on a per-email basis. Any overage fees are added to your invoice for the following billing period.

    Can you help me get started? Do you offer deliverability consulting?

    Yes! We can walk you through the entire set-up process to ensure that your email environment is built for success. You don’t need deliverability consulting with Kingmailer as your emails are designed to land in user’s inboxes.

    Why do I need to verify my account?

    We only ask you do this by email, just click on the activation link to verify your account. No credit card is needed for this.

  • MailGun alternative

    Why choose Kingmailer over Mailgun?

    With Kingmailer you don’t need to purchase a dedicated IP or “managed email service” or pay extra for “great delivery” to enjoy great deliverability. Great email delivery is already included in your plan, doesn’t matter which plan you use. You can also pay with Bitcoin.

    Try this Mailgun alternative for free.

    Free clean IP address + email routing included. Not for mass mail or sending newsletters.

    Free Trial

    Benefits and features

    Price per year$49
    Crypto PaymentsYes
    Inbox rate %99%
    Transactional Emails FocusYes
    Bulk / Mass EmailingNo
    API included Yes
    MX RoutingYes
    DKIM & SPF SupportYes
    Setup Time2 minutes
    Free TrialYes
    Customer SupportEmail & Telegram
    WordPress PluginYes, available
    Privacy FocusedYes
    Emails /moPrice /moPrice /year
    5,000N/AUSD49
    10,000N/AUSD79
    20,000USD19USD159
    30.000USD29USD289
    40,000USD39USD389
    50.000USD49USD489
    Pay with Bitcoin, Binance Pay, USDT or other cryptocurrency. Larger plans available. Please sign up and test our service first. Contact us info@kingsmtp.com or via Telegram @ KingSMTPcom

    Easy to troubleshoot emails

    In your KingSMTP dashboard, you can click on each email to troubleshoot. KingSMTP 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
    Extra details of your message
    Spam Check details
    Spam score

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

    Side-by-side comparison

    MailGun offers a free plan (Flex), which barely has any options, so we made the comparison with their Foundation plan, which costs $35 p/mo vs. Kingmailer’s $19.95 monthly plan (or $79 per year).

    This side-by-side comparison is based on features listed on MailGun’s pricing page:

    FeaturesMailgunKingmailer
    Email APIs, SMTP Relay, and Webhooks✓✓
    Suppression Management✓✓
    Inbound Email Routing✓✓
    Email Tracking and Analytics✓✓
    99.99% Guaranteed Uptime SLA✓✓
    1 Dedicated IP✘✘
    Email Address Validations✓✘
    Inbox Placement Tests✓✓
    Send Time Optimization✘✘
    Log Retention5 Days30 Days
    Message Retention1 Day30 Days
    Detailed Documentation✓✓
    24/7 Ticket Support✓✓
    Instant Chat Support✘Facebook messenger
    Live Phone Support✘✘
    Managed Deliverability Services✘✓
    Rapid Fire Burst Sending✘✘
    Custom Features✘✓
    Contact us support@kingmailer.co

    FAQ

    How can I upgrade my account?

    Send us an email to upgrade your account.

    How does Kingmailer work?

    Kingmailer is an email delivery and deliverability service that empowers businesses to easily send email from their (web) apps. It’s free to sign up and easy to get started.

    How does your billing work?

    You will be billed every 30 days. We accept PayPal and all major credit and debit cards. Your payment info is stored and processed securely by 2Checkout and never touches our servers.

    How do I send emails with Kingmailer?

    Since Kingmailer has both an HTTP API and an SMTP endpoint, you can choose to send the way you’d like. Both ways have their advantages… SMTP is easy to setup and often plug and play, but API is much more reliable at scale. If you’re building an application, we recommend using our HTTP API.

    How many dedicated IP’s do I need? Can I get more?

    You don’t actually need a dedicated IP when using Kingmailer, because great email delivery is already included in your plan, no additional investment is needed for this from your end.

    How many users come with each plan?

    Every Kingmailer plan (free and paid) allows you to add as many users as you need to your account at no additional cost. We think it’s much easier this way to manage the account with your team, without sharing login credentials.

    I want to test Kingmailer first. How can I do that?

    The free trial is ideal for those looking to test out the service. Keep in mind that the free trial has a max 20 emails per hour limit and a max 20 recipients limit. If you reach these limits, your email traffic will be paused. The free plan has 30 days of log retention so you can easily troubleshoot issues.

  • Best Free SMTP Server

    Start sending, receiving, routing/forwarding your emails, using our free SMTP server. After signing up you will have your free SMTP Username and SMTP Password. And also free SMTP Web API.

    Free Trial
    Emails /moPrice /moPrice /year
    5,000N/AUSD49
    10,000N/AUSD79
    20,000USD19USD159
    30.000USD29USD289
    40,000USD39USD389
    50.000USD49USD489
    Pay with Bitcoin, Binance Pay, USDT or other cryptocurrency. Larger plans available. Please sign up and test our service first. Contact us info@kingsmtp.com or via Telegram @ KingSMTPcom

    Easy to troubleshoot emails

    In your KingSMTP dashboard, you can click on each email to troubleshoot. KingSMTP 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
    Extra details of your message
    Spam Check details
    Spam score

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

    Kingmailer provides everything you’ll need for sending, receiving and routing (forwarding) your emails.

      Sending

      Transactional Emails ✔
      Bulk/Marketing allowed ✘
      SMTP ✔
      REST API ✔
      Official libraries ✔
      Community libraries ✘
      Spam score checking ✔
      Spam complaint handling ✔
      Bounce handling ✔
      Shared IPs ✔
      Dedicated IPs ✔
      Separate servers ✔
      Pre-made email templates ✘
      Template engine ✘
      Inbox preview ✔
      Scheduled delivery ✘
      A/B testing ✘
      Email address validation ✘

      Inbound

      Inbound email processing ✔
      RegEx matching on all email headers (“routes”) ✘
      Chain multiple filters ✘
      UTF-8 encoding ✔
      Raw MIME ✔
      Strip signature and quote blocks ✔
      Spam filtering ✔

      Analytics

      Delivery rates ✔
      Bounce rates ✔
      Open rates ✔
      Click tracking ✔
      Unsubscribe tracking ✘
      Spam rates ✔
      Full message storage ✔ (180 days /custom)
      Automatic tagging ✘
      Custom tagging ✔
      Custom header metadata tag ✘
      Custom tracking domain ✘
      Geolocation data ✘
      Email client and device tracking ✔
      Real-time notifications ✔

      Security

      SPF ✔
      DKIM ✔
      DMARC ✔
      2FA ✘
      Opportunistic TLS ✔
      Enforced TLS ✔

      Reliability

      Time to Inbox ✔
      System availability API ✔
      Service availability API ✔

      How does it work?

      After signing up with Kingmailer you will have your own free SMTP mail server, with username and password. You can use the SMTP server and integrate with your web apps for example WordPress.

      Why you will love KingSMTP

      Kingmailer SMTP WordPress plugin
      Quick email integration
      Easy setup
      Free plan
      Highly reliable
      Web API
      Can also be used for inbound emails
      Easy to use UI
      Email + Telegram support
      Easy to view logs of sent emails
      Easy to configure in Gmail
      Bitcoin also accepted

      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?

      Yes.

      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?

      Yes.

      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.