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).
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
Features
MailChannels
Kingmailer
Keeping up with spammers
✔
✔
30 minute support response, 24/7
✔
✔
Where did that email go?
email dashboard
email 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.
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:
Features
Sendgrid
Kingmailer
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 Activity
3 days included
30 days included
Additional Email Activity History
Available for purchase
Available for purchase
Event Webhook
✓
✘
Inbound Parse Webhook
✓
✓
Expertise & Support
Technical Support
Ticket & chat support
Email, Facebook messenger, WhatsApp
Access to Expert Services
Available for purchase
✓
Dedicated Customer Success Manager
✘
✓
Productive Collaboration
Dynamic Templates
✓
✘
Email Content Testing
✘
✘
Teammate Permissions
1 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.
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.
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:
Features
Mailgun
Kingmailer
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 Retention
5 Days
30 Days
Message Retention
1 Day
30 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.
In this article we will explain how to get your account up and running.
Follow the steps below and have fun!
Sign up / Register
Signing up with our SMTP service is free and it’s also free to test/try out. Giving you a fair chance to try our product, before deciding to upgrade. No credit card is required for trying out our service.
Verstuur, ontvang, route/doorstuur uw e-mails met behulp van onze gratis SMTP-servers. Na het registreren heeft u uw gratis SMTP-gebruikersnaam en SMTP-wachtwoord. En ook gratis SMTP WEB API.
Kingmailer biedt u alles wat u nodig heeft voor het versturen en ontvangen van e-mails. Ook voor het routen van e-mails naar een of meerdere specifieke e-mailadressen bieden wij oplossing.
Tijd naar inbox ✔ Systeem beschikbaarheid API ✔ Service beschikbaarheid API ✔
Een foutje gezien? Laat het ons weten info@kingmailer.co
Hoe werkt het?
Nadat u zich heeft aangemeld bij Kingmailer, heeft u uw eigen gratis SMTP-mailserver, met gebruikersnaam en wachtwoord. U kunt de SMTP-server gebruiken en integreren met uw web-apps, bijvoorbeeld WordPress.
Hier is een lijst van e-mail types die wij momenteel ondersteunen en niet ondersteunen.
Ondersteuning
Geen ondersteuning
Registratie e-mails
Nieuwsbrieven
Wachtwoord reset e-mails
Aanbiedingen e-mails
Notificatie e-mails
Sales e-mails
Welkom e-mails
Bekendmakingen
Transactionele e-mails
Marketing nieuwsbrieven
Forum meldingen
Ongevraagde e-mails
Factuur & offerte e-mails
Spam
Niet zeker? Neemt u contact met ons info@kingmailer.co
Waarom u van Kingmailer zult houden
Snelle e-mail integratie
Gemakkelijk om te starten
Gratis pakket
Erg betrouwbaar
Web API
Kan ook worden gebruikt om mailtjes te ontvangen
Gemakkelijk om te gebruiken UI
E-mail + WhatsApp support
Gemakkelijk om logs van verzonden emails te bekijken
Gemakkelijke integratie met Gmail
Bitcoin wordt ook geaccepteerd
Inbox Geplaatste E-mail
E-mail Provider
Inbox Geplaatste Resultaten
Gmail
100%
Outlook
100%
Yahoo
100%
Mail.ru
100%
G Suite
100%
Niet aangekomen
0%
Spam
1.8%
Inbox Geplaatst
98.2%
Voor de volledige rapport gaat u a.u.b. naar E-mail delivery report (opent in een nieuw tabblad).
Veel gestelde vragen
Welke betalingsmethoden accepteert u?
We accepteren PayPal en alle gangbare creditcards en betaalpassen. Uw betalingsgegevens worden veilig opgeslagen en verwerkt door 2Checkout en raken nooit onze servers.
Kan ik bij u een SMTP server kopen?
Ja.
Accepteert u Bitcoins?
Ja.
Ga ik mijn eigen SMTP-gebruikersnaam en -wachtwoord hebben?
Ja, nadat u zich heeft aangemeld en uw domein heeft geverifieerd, kunt u uw eigen SMTP-gebruikersnaam en -wachtwoord gebruiken. Al uw e-mails worden verwerkt en gemakkelijk overzichtelijk gemaakt in uw eigen e-mail dashboard.
Kan ik uw SMTP-server gebruiken met een WordPress plugin?
Ja.
Heb ik een eigen domein nodig?
Ja. Om onze SMTP-service te kunnen gebruiken, heeft u een eigen domein nodig. U moet het domein verifiëren en een paar DNS-records toevoegen (minstens SPF en DKIM), voordat u ermee mailtjes kunt versturen.
Als u een developer bent en u heeft dit nodig voor testdoeleinden en u heeft geen eigen domein, bevelen wij u aan een gratis .TK-domein te registreren om onze service te proberen.
Hoe kan ik upgraden?
Stuur ons een e-mail en wij helpen u verder hiermee.
Kan ik naar een terugbetaling vragen?
Ja, dat kan en dat mag.
Zullen mijn mailtjes in de spam/junk folder belanden?
Wij geven u een 98% garantie dat dit niet zal gebeuren.
Kan ik mailtjes versturen/ontvangen vanuit mijn zakelijke e-mailadres?
Ja, dit is wel mogelijk. U zult in dit geval wel eerst onze MX gegevens toevoegen aan uw domein DNS en vervolgens email routing instellen. Wij zullen u wel helpen hiermee.
Kan ik mijn mailing lijst hier uploaden en starten met mailen?
Nee. We bieden klanten geen manier om hun abonnees naar ons platform te uploaden. Ook faciliteren wij op dit moment geen nieuwsbrieven.
Ik heb een bestand met email adressen gekocht. Kan ik mailtjes sturen naar dit bestand?
Nee, aangezien het onze service zal schaden.
Kan ik via de bank overmaken of via Western Union?
Ja, dat is mogelijk. Stuur ons eerst maar een mailtje info@kingmailer.co.
Looking to buy SMTP with Bitcoin? We offer the best price/quality SMTP service in comparison to other SMTP providers. We accept Bitcoin. Buy your SMTP Server for sending transactional emails and MX email routing/email forward and pay with Bitcoin. Try our SMTP service for free. Start sending, receiving and route /forward emails with your SMTP username and password. Pay with Bitcoin to upgrade your account. Not for sending bulk / mass mail or spam.
5,000 emails per month. For Routing & Transactional emails only. Not for sending spam, mass mail or newsletters. Have questions? Send us an email support@kingmailer.co. We accept Bitcoin. Thank you for supporting small business.
Benefits and features
Price per year
$49
Crypto Payments
Yes
Inbox rate %
99%
Transactional Emails Focus
Yes
Bulk / Mass Emailing
No
API included
Yes
MX Routing
Yes
DKIM & SPF Support
Yes
Setup Time
2 minutes
Free Trial
Yes
Customer Support
Email & Telegram
WordPress Plugin
Yes, available
Privacy Focused
Yes
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.
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:
Host: kingmailer.org
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.
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.
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.
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.
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.
The inaugural email was transmitted between the two machines depicted in this photograph, which were positioned side by side, with their only link being the ARPANET. In the foreground is BBN-TENEXA (commonly referred to as BBNA), the machine that received the first email. At that time, in 1971, host names did not include extensions like .com; the Domain Name System (DNS) was introduced later. In the background is BBN-TENEXB (known as BBNB), the machine from which the first email was sent. Visible in the left foreground is the Teletype KSR-33 terminal that printed the initial email. Just behind it, though largely obscured, is another KSR-33 where the first email was typed.
BBNA was a Digital Equipment Corporation KA10 (PDP-10) equipped with 64K (36-bit) words of real magnetic core memory, which is equivalent to 288 KBytes by today’s standards. In contrast, BBNB was smaller, featuring only 48K words of memory. Both machines operated using the TENEX time-sharing monitor.
Vaak ontvang je onverwachte e-mails van een afzender genaamd “Postmaster”, of “Mailer-Daemon”, of “Mail-Subsystem”. Het onderwerp begint meestal met “mail mislukt”, wat betekent dat? Welnu, dit zijn altijd foutmeldingen van het mailsysteem. De “Postmaster” is de persoon die — kort gezegd — zorgt voor het goed functioneren van een mailsysteem.
De “Mailer-Daemon” is het proces, oftewel het programma, dat verantwoordelijk is voor het transporteren van e-mails. Het transporteren van e-mails is een zeer complexe taak en kan hier niet eens worden besproken.
In ieder geval geven e-mails van dit type altijd aan dat er een fout is opgetreden tijdens het transport van een e-mail, dat wil zeggen dat de e-mail niet kon worden afgeleverd. In een dergelijk geval wordt de e-mail automatisch teruggestuurd naar de afzender met een beschrijving van de opgetreden fout.
Een nadere blik op deze e-mails biedt altijd informatie over het probleem. In de meeste gevallen is het ingevoerde e-mailadres onjuist, dat wil zeggen dat het ofwel een typfout is of een niet-bestaand e-mailadres. Een zorgvuldige controle van het adres zou in de meeste gevallen het probleem moeten oplossen; andere problemen kunnen binnen de reikwijdte van deze introductie niet worden behandeld.
