Running an email campaign is like a game of Jenga. One wrong move can tumble the tower of an email campaign. To keep moving, you have to make sure all your pieces are in the right place. Yet, the most important piece among all is effective SMTP Service Providers

What are SMTP Service Providers & How do they work?

In simple words, SMTP is a mail transferring protocol that enables you to send as well as receive emails via the internet.

It comes in action when you start an email campaign where it works with Mail Transfer Agent(MTA) to forward your emails through whitelisted servers & ensure that your emails are sent safely to the receivers inbox.

“The best SMTP service is one that is effective, reliable, affordable and secure.”

Your delivery engine must be easy to set up without coding and technical help. Plus, it should take the minimum time possible in pushing the emails from the sender’s server to the recipient server.

What are the best SMTP Service Providers?

Well,  there are different kinds of specifications on the basis of which you can determine which SMTP service is best for you.  For instance, pricing plan, features, deliverability rates, etc.

Here’s a quick comparison of various SMTP Service Providers- 

Services Pricing No. of Emails External SMTP SMTP Routing
Pabbly Email Marketing $29/m Unlimited Unlimited Yes
Sendinblue $25/m 40,000 No No
Moosend $125/m Unlimited No No
Pepipost $85/m 4,00,000 No No
MailJet $37.76/m 60,000 No No

Aside from the above-mentioned list, here we are providing you the list of SMTP service providers that comes with powerful features and high inbox delivery rates.

1. Pabbly Email Marketing – #1 in SMTP Service Providers

“Pabbly Email Marketing is the most affordable email marketing service that provides you multiple free SMTP servers along with SMTP routing without charging any extra money.”

This is the only email service that comes with an inbuilt free SMTP server along with all the features of email marketing software at a single place.
With this service, you can add n number of SMTPs and enjoy SMTP routing with diverse SMTP relay services.

Here, you can deliver an unlimited email either by sending it from a single server or by dividing them equally or unequally among different SMTP servers. This assures that your account will not get suspended when your SMTP gets broke. As here, you can send emails from other SMTPs too.

Whether you are a techy guy or not, you can easily connect any SMTPs as it doesn’t require any kind of coding & assures 99% inbox delivery and 2X open rate at the cheapest rate in the market.Pabbly Email Marketing - SMTP Service Providers


  • Integration

This SMTP email service comes with Google Analytics integration through which the client’s activity and behavior can be tracked easily. Besides, you can connect apps to your Pabbly Email Marketing account with Zapier integration.

  • Automation

Here, you can automate your emails and engage your users by sending them pre-scheduled emails like welcome emails, first purchase emails, thank you emails, etc.

  • Webhooks Integration

This SMTP relay service comes with a custom Webhook that is compatible with fetching out spammers & email bounce. It is also capable of showing the proper statistics of spam rate, bounce rate, suspended email, etc.

  • Autoresponder

Pabbly Email Marketing comes with amazing autoresponders that will send a welcome email to a new customer. Also, it will send auto followup emails to non-opens automatically.


  • Free: With this free trial plan, you can explore Pabbly Email Marketing and also connect upto 3 SMTP.
  • Rookie: Send unlimited emails to 5000 users with automatic followup by paying just $29.
  • Pro: Add upto 15000 subscribers to your email campaign and enjoy additional features like live chat support & SMTP routing at a nominal price of $49.
  • Advance: This plan comes with multiple sub-plans that range from $99 – $1599. You can send unlimited emails to 50,000-10,00,000 users depending upon the chosen plan.

Surprise!! If you opt for yearly plans, you will get an instant 20% off.

Pabbly Email Marketing - Free SMTP Service Providers

Buy NowClick Here For More Details

2. SendinBlue

SendinBlue is another one amongst best SMTP relay service providers that can be used for sending transactional and marketing emails.



Easy To Configure/ Ease To Use – 

SendinBlue SMTP Provider presents all the tools required for managing contacts list quickly and efficiently. No technical skills are needed to use them. Simultaneously, SendinBlue also includes email and SMS marketing services.

Delivery Rates and Statistics – 

  • SendinBlue continuously monitors on sending servers to ensure the best deliverability possible. However, it does not guarantee that all your emails will arrive in the recipient’s inbox as this also depends on the sender.
  • SendinBlue also provides the facility for tracking email campaigns and provides reports by open rate, click rate, bounce, etc.

Pricing – 

  • Free plan – SendinBlue allows you to send 9,000 emails per month without any cost.
  • Price – It charges $1535 for sending 40,000 emails in a month. Further, various pricing plans are available through which you can send more than 40,000 emails.

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3. Moosend

Moosend is a good alternative to the other email marketing software. This SMTP tool comes with the faster drag & drop email creation option, Google Analytics tracking, manage IP address and unlimited custom field. Besides,  It provides you easy and simple integration and utilizes to send transactional emails directly into the client’s inbox.

Moosend best email service

Easy To Configure/ Ease To Use –

To configuration of Moosend you don’t need more technical skills. Also, you can find your email address on our SMTP server. Now include the Mailing ID and set your SMTP password to use this tool.

Delivery Rates and Statistics –

With Moosend send out the emails into the user’s personal inbox rather than their junk folder.
It is highly reputed by the email reputation organization it has maximum deliverability rates of 98%.

Pricing –

  • The cheapest plan for this email service is $8 for 6 Month, In which you can send unlimited emails to 2000 subscribers.
  • It has some monthly plans, this is one of them where you can send unlimited emails to 10,000 subscribers at $55
  • Save 20% on its yearly plans and Send an unlimited email to 10,00,000 subscribers at $,2920

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4. Pepipost

Pepipost is yet another useful tool for sending emails in bulk. You can choose from the 2 options provided by the software i.e. SMTP relay and Web API. Once you select the mode of sending emails, the software will handle the further functionalities & makes sure your email reaches the inbox of the recipient.

Pepipost SMTP Server

Easy To Configure/ Ease To Use –

You have the authority to integrate Pepipost with the applications or platforms you are currently working on. No need to worry about the coding part as the ready-to-use plugins serves the purpose and you can effortlessly start sending the emails.

Delivery Rates and Statistics –

Sending confidential emails can be crucial for firms. So, to provide you with a secure environment, the software uses the SSL & TLS encryption. Also, it doesn’t store your data which means that you have no corner for getting the info leaked.

You can keep the tabs on for all your subscribers and get details of their every single action via HTTP POST-call-backs as and when the recipient receives the emails, opens the email, etc. It also informs you of the occurrence of bounces and unsubscribes. This will gradually help you in increasing the deliverability rates.

Earn Cash Back!

Another interesting feature of this software is you earn cashback!

Yes, you heard that right. On all the emails that get opened by the receiver, you receive a specific amount of cashback that will be deducted from the next month’s billing cycle in the form of discount.

Pricing –

To start with, you can opt for a FREE plan that allows you to send up to 30,000 emails per month. Unlike others, you don’t even need to provide any credit card details.

Consequently, you can switch to the paid plans for better efficiency.

The paid plans start from $15 for sending around 100,000 emails every month. Still, if you need to send more emails, you can easily send up to 1000 emails more just by paying $0.60.

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5. MailJet

MailJet is a reputable SMTP service provider as well as email marketing solution that allows you to send, track and deliver emails.


Easy To Configure/ Ease of Use – 

MailJet SMTP relay service is very secure and follows a straightforward setting procedure for integrating to their API. It lets you create newsletters and other marketing campaigns very quickly.

Delivery Rates and Statistics – 

  • MailJet ensures that your emails make to the recipient’s inbox rather than spam. You can send emails in bulk without any deliverability issue.
  • You can also track emails and get detailed reports of bounces, unsubscribes, spam complaints, etc.

Pricing – 

  • Free plan – – It lets you send 6,000 emails free for a month with a limitation of 200 emails/day.
  • Price – – MailJet charges $7.49 for sending 30,000 emails per month. It has two plans, i.e., Basic and Premium; you can choose one as per your requirement.

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6. Inboxroad

Based in Amsterdam, Inboxroad has set itself apart with a focus in excellent deliverability based on a unique, personal approach. With a dedicated expert handling your private account, expect to be impressed with weekly hands-on actionable advice based on their observations.

As one of the fastest-growing SMTP relay providers, the company has made its name in the industry. For those who are looking for long term commitments with strong support, Inboxroad offers the best solution.


Easy to configure / Ease to use
Inboxroad’s SMTP relay is easy to configure in as quickly as a few minutes of your time. It can connect to various existing front-ends as well as your own custom made solutions.

Delivery rates and statistics

  • Inboxroad is renowned for successfully reaching the inbox of your recipients thus resulting in increased ROI.
  • Your assigned delivery expert is constantly monitoring your sends and offers you hands-on advice that you can act upon on a weekly basis.
  • With a delivery rate of 99.7%, it’s one of the best solutions in today’s market


  • Pricing is based on monthly volume, there is no restriction on the number of subscribers.
  • The lowest basic plan comes at €59 and contains 100,000 emails a month.
  • For those with higher demands, pricing can drop to as low as €0.10 CPM.

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SMTP2GO allows you to send beautiful newsletters and provides a powerful API for sending transactional emails with no monthly commitments and limits.


Easy To Configure/ Ease To Use – 

In SMTP2GO service, you can easily upload contacts, manage subscribers and run powerful marketing campaigns through its powerful and user-friendly features.

Delivery Rates and Statistics – 

  • SMTP2GO gives high delivery results and includes features for analyzing the delivery reports/status and activity graphs.
  • Using SMTP2GO, you can send emails to a large group of recipients with detailed delivery reports on spam analysis, delivery rate, opens, clicks, bounces, complaints and unsubscribes.

Pricing – 

  • In the first plan of SMTP2GO lets, you send 20,000 emails for $14/month.
  • Price – For delivering 1 million emails, you need to get in touch with the service provider.

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8. Amazon SES

Amazon SES is an email service that provides an easy way for sending transactional emails and marketing emails by using their email addresses and domains.

Amazon SES

Easy To Configure/ Ease To Use – 

Amazon SES help you send emails without any requirement of configuring and managingthe mail servers. It allows you to send thousands of email with a single click and thus, appear as a time-saving means.

Delivery Rates and Statistics – 

  • As an email sender, you want emails to be delivered to your recipient’s inbox. Amazon guarantees email deliverability by filtering emails to ensure that messages aren’t spam, and won’t get blocked by spam filters.
  • With Amazon SES, you get to track your emails. It holds a mechanism that automatically works and collects all stats regarding email delivery, bounce rate, complaint rate, and rejected messages.

Pricing – 

  • Free plan –  Amazon SES lets you send 62,000 emails/month free if you are an EC2 user (EC2 users are those users who purchase the Amazon service). Additionally, you will also receive 1,000/month for free.
  • Price – Amazon SES charges $0.10 per thousand emails and $1 for sending 10,000 emails.

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9. MailGun

MailGun is an email automation service and one of the best SMTP providers, which is owned by Rackspace. It allows you to send, receive, track and store emails effortlessly. With MailGun, you can send notifications, newsletters, or anything you want to distribute on a broader scale.


Easy To Configure/ Ease To Use – 

MailGun Plugin for WordPress provides a simple free solution with an easy configuring. It avoids the challenges of running the mail server and overcomes the limitations of your host’s mail server.

Delivery Rates and Statistics – 

  • MailGun automatically leads the delivery process for emails and presents the best possibility to land emails to inbox. Using the API or control panel, you can monitor each email you send.
  • MailGun keeps track of every email you sent and received. It provides a variety of means to access data about your email campaigns and figures spam complaints handling, spam filtering handling, bounce handling, etc.

Pricing – 

  • Free plan – MailGun lets you send 10,000 emails per month for free.
  • Price – It charges $15 for sending 40,000 emails in a month. If you need to send more than 40,000 emails, then you require paying according to the number of emails sent.

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10. SendGrid

SendGrid is another cloud-based best SMTP service provider that allows you to send and receive mass emails. You can run marketing campaigns and even send transactional emails, without worrying about email servers.


Easy To Configure/Ease To Use – 

SendGrid has an easy to use interface that makes it easy and quickly send emails. You can integrate their API design with your app quickly, using their code libraries and make your email sending an easier task.

Delivery Rates and Statistics – 

  • SendGrid offers the best reliability, scalability, and email deliverability. Whether you are sending transactional or marketing email, it ensures that your emails reliably reach the recipient’s inbox.
  • SendGrid has an Event Webhook arrangement that provides real-time feedback for every email you send. Additionally, you get an API for sending emails and complete analytic reports about your emails.

Pricing – 

  • Free Plan – SendGrid lets you send 12,000 emails per month for free with a limitation of 400 emails per day.
  • Price – It charges $9.95 for sending 40,000 emails in a month and $19.95 for 1,00,000 per month and so on various plans are available.

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11. Postmark

Postmark is one of the reputed SMTP relay service providers used and is mainly designed keeping in mind for sending transactional emails only. Using Postmark, you can instantly create and send transactional emails with zero maintenance.

PostMark - SMTP Service

Easy To Configure/ Ease To Use – 

Postmark is easy to configure with features of inbound email processing.

Delivery Rates and Statistics – 

  • Postmark uses proper delivery practices and provides 100% email inbox rates. It assures that your messages reach the user’s inbox.
  • You can track your emails and can monitor who opened your emails, where they opened, what platforms they used and how long they read the email.

Pricing – 

  • Free plan – Postmark allows you to send 25,000 emails without any price.
  • Price – It charges $1.50 per thousand emails for sending emails to 5,00,000 contacts. Also, If you have more than 5,00,000 contacts, then it will cost you across $1.00 per thousands of emails sent.

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12. Mandrill

Mandrill is a simple, powerful transactional email platform from MailChimp. You can use Mandrill to send personalized emails, e-commerce, and automated transactional emails.


Easy To Configure/ Ease To Use – 

The whole process of integrating with Mandrill can be accomplished out within few clicks. Mandrill has developed a mobile app of theirs, which makes them a more flexible one to use.

Delivery Rates and Statistics – 

  • Mandrill securely and efficiently delivers email without any deliverability issue.
  • Mandrill allows advanced email tracking and provides a comprehensive review of the email campaigns on parameters like open rate, click rate, bounce rate, etc.

Pricing – 

  • Free Plan –Mandrill free program allows you to send 2,000 emails.
  • Price – It charges $9.95/month for 25,000 emails and with a further increase in demand beyond 25,000 emails, it costs approx. $.20/thousand emails.

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13. SocketLabs

SocketLabs is another SMTP relay service provider that you can use for creating and sending marketing emails including transactional emails.


Easy To Configure/ Ease To Use – 

SocketLabs merely takes a few minutes for setting up. It lets you create emails in HTML editor, and moreover, you can directly paste your email content on the editor.

Delivery Rates and Statistics – 

  • SocketLabs has executed various steps to ensure that emails won’t result in any spam and report as blacklisted ones.
  • SocketLabs secures that emails get reliably and precisely deliver. You can also check the status of all your outbound messages sent, failed, opened, and clicked, as well as all complaints submitted.

Pricing – 

  • Free plan – SocketLabs gives 15 days trial alternative where you can send 500 emails.
  • Price – It starts with $15/month for 5,000 messages and then you can select your plan as per your requirement. You can also cancel or change the plan at any time; no set-up fees are required.

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 14. MailGet SMTP

MailGet SMTP is another best SMTP service provider and cloud-based email service that allows you to send emails in bulk. It assures that your email reaches to the recipient anyhow, regardless of the number of emails you send.

MailGet SMTP- SMTP Service Providers

Easy To Configure/ Ease To Use –

MailGet SMTP is an affordable product and is easy to use. Besides,  the service ensures that you will safely and reliably reach all of your recipients as it uses whitelisted servers.

Delivery Rates –

  • MailGet SMTP can allow you to send emails from different domain names or “From” addresses.
  • It also provides email validation with SPF, embeds DKIM signatures and sends emails at the lightning-fast speed.

Pricing –

MailGet SMTP allows you to select the product depending upon your usage. For example

Plan Name Cost No. Of Emails
Starter $5/month 5,000
Rookie $29/month 50,000
Pro $49/month 100,000
Advance $59/month 120,000

The number of plans is also available after the advance plan which starts from $79/month for 150,000 emails to $419/month for 600,000 emails. For further details click here.

After doing all the research & testing..MailGet SMTP came up with the Best Deliverability & Pricing

And that’s exactly what everybody is looking for… Don’t lose this amazing offer!

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I guess the above post would help you to know about the best SMTP service provider mass email that shall be used for email marketing.

Try MailGet – email marketing solution that connects with 6 cheap SMTP relay service providers namely, MailJet, PostMark, Mandrill, SendGrid, Amazon SES and MailGun.

Check out our other popular post too – 

10 Cheapest Email Marketing Services

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