A Comprehensive Free SMTP Server List For Email Marketing

Email is one of the primary tools used by businesses across the world. It helps in reaching out to their customers with information about new product launches, special offers, and deals, etc. Unlike an individual who uses the traditional email systems like Gmail, Yahoo, or other personal email services, businesses need bulk emailing features.

They also need to make sure that their emails stay out of the recipients’ spam folders, reach the correct inboxes, and arrive on time, especially in the case of time-sensitive deals and offers. And that is the reason they use dedicated SMTP servers or buy SMTP services that can ensure all their requirements are met.

reliable smtp server

What Is An SMTP Server?

There are protocols that enable sending and receiving of emails, and you cannot send or receive emails without them. An SMTP (Simple Mail Transfer Protocol) server is a system that uses a push protocol to enable sending of email messages. SMTP only takes care of the sending, and you need other protocols (IMAP/POP) to retrieve or receive emails. In simple words, the SMTP server acts like a mail carrier delivering email messages to the correct recipient.

Best Free SMTP Service

Not every organization can allocate the budget needed for buying dedicated services, including SMTP servers. The good news is that they don’t necessarily have to do so. We have listed below a free SMTP server list containing some of the best services available currently. The free SMTP service providers offer great help to startups and SMEs looking to enhance their email marketing strategy on a low budget.

Google SMTP Server

The Google SMTP Server is one of the most popular free SMTP services available. Instead of opting for unreliable and cheap SMTP servers, businesses can make use of the SMTP server from Google. It is compatible with all scripts and programs to send emails.
Everyone knows that millions of people use Gmail, and any email sent from a Gmail address is not going into the spam folder so quickly. Gmail is one of the most trusted email service providers and is available free of cost. But a free service always has its limitations, and businesses can only send several email messages per day through this free server.

If used with other email clients, the free SMTP server from Google is available for free for the first 14 days and allows 500 emails per day. Once the trial period is over, businesses need to switch over to a paid plan.

Some of the features of the Google SMTP Server are listed below:

  • Access to Google Drive
  • Allows access to other Google services as well
  • Access to Google Forms and sheets
  • Easy to manage across users and devices
  • Quickly integrates with WordPress


SendinBlue SMTP server

Next on our list of the best free SMTP relay services is the SendinBlue SMTP server. It is an easy-to-use SMTP server. It also comes with support for various APIs and plugins. The SMTP server can also be integrated quickly with WordPress.

Even though the main SendinBlue SMTP server comes as a paid service, it also provides a free version that allows businesses to send a maximum of 9,000 emails per month. But there is a limitation of 300 emails per day. If your business requires sending more than 300 emails per day, then you might consider switching to the paid version.

The paid plan starts from $66/month, and there is also an Enterprise plan. Under these plans, businesses can customize the service to fit their requirements best.

Some of the features of SendinBlue are as follows:

  • Excellent service for both sending regular emails and sending bulk emails
  • Options to import or export emails for references
  • User panel allows sending bulk emails manually
  • Easily integrates with WordPress


SendGrid SMTP Server

SendGrid is the SMTP server in our list that has more than 80,000 customers and handles around 50 billion emails per month. It is a reliable SMTP service that comes with both free and paid plans. It provides businesses with real-time reports along with some detailed analytics.

The cloud-based service supports both transactional as well as business emails. The service has an excellent global support network along with a scalable service infrastructure. Deliverability is one of the best in the industry, and that is the reason many businesses rely on SendGrid for email marketing.

The free plan allows users to send up to 30,000 emails for 30 days. After which one needs to switch over to the paid version. The paid version includes various plans, including essentials, pro, and premier plans.

Some of the unique features of SendGrid are as given below:

  • Secure email transmission
  • Two-factor authentication while sending emails
  • Scheduling features
  • Email segmentation capabilities
  • A/B testing features also included
  • Supports Java, PHP, and Node.js
  • Easily integrates with WordPress by using SendGrid plugin


Amazon SES

Amazon SES (Amazon Simple Email Service) is the next in our free SMTP server list. Amazon SES supports both transactional as well as business emails and is being widely used by digital marketers and application developers. The SMTP service can be easily integrated into your existing software.

The service comes in both free as well as paid versions. The free version allows businesses to send around 62,000 emails per month. But the free service is available only for Amazon EC2 customers. And free emails can only be sent using Amazon EC2 instances or through AWS.

The features of Amazon SES are as follows:

  • Provides detailed report on successful deliveries, rejected and bounced emails
  • API integration also provided
  • Using WP SES plugin, WordPress can be integrated easily


MailJet SMTP Server

MailJet is another robust SMTP service that allows both transactional and email marketing as well. The free version supports sending up to a maximum of 6,000 emails in a month and 200 emails per day. Businesses that require sending more emails in a day need to switch to the paid version. The basic paid version costs around $9.65 per month, and the premium plan costs around $15.50 per month.

Some of the features of MailJet are listed below:

  • Easy-to-use Drag-and-Drop email editor
  • Excellent email statistics report
  • Various email marketing templates available
  • Can be easily integrated with WordPress
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We hope the above free SMTP server list has provided you with all the information you want to know about the various free SMTP services available on the market. Before making a selection, you should be clear about your requirements and try to find a service that best fit those. Excellent service for one organization may not necessarily be the best one for you. Also, be sure to check out the leading mass email tools on the market that can help you send bulk emails.

For example, out of the various SMTP services Windows and Mac users may have their different preferences. Thorough research will go a long way to help you make an informed decision. Please feel free to post your comments and suggestions on the feedback section provided below.

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