Top 20 Best Paid SMTP Relay Service Providers - Updated 2025

In managing your company’s email messaging, having a knack for words and a ‘killer instinct’ in marketing only gets you so far; you’ll also need a suitable set of tools and services. Signing up for an SMTP Relay Service is one service you should be on top of your ‘To-Do’ list.

Simple Mail Transfer Protocol (SMTP) is the industry’s standard for sending mail over the web. Since SMTP relies on appropriate authentication tools for sending emails, it ensures that your marketing and transactional emails are delivered seamlessly to the inboxes of your target audience. In addition to sending bulk emails seamlessly, a reliable SMTP service protects the sender’s reputation and avoids being blocked by IP providers.

Marketing experts and insiders agree that sending emails hinges on three crucial factors: the content of your messages, the sender’s reputation, and the SMTP email infrastructure.

With these challenges, working with a reputable SMTP Relay Service provider is always a better business decision. It also makes business sense since you achieve better email deliverability without worrying about the technology or technical know-how, allowing you to focus on other aspects of the business. So, let’s dive into the best SMTP service providers, highlighting their pricing plans and best features for small business owners, marketers, and developers.

Maileroo

Maileroo is an up-and-coming email delivery software provider with 500+ customers and growing. The company offers a user-friendly, affordable, easy-to-use platform that integrates seamlessly into existing websites. Maileroo is best known for its transactional emails and gives its users access to free email verification API, SPF Record Generator, and Mail Tester. 

To ensure that its customers are on top of their email-sending campaign, its SMTP Relay service comes with real-time analytics for complete reporting. Each plan comes with detailed reporting and click-and-open analytics.

Pricing

Maileroo offers a convenient and flexible pricing plan that can work for all types of businesses. If you’re a new customer and unsure of your requirements, go for Maileroo’s FREE Plan, which lets you send up to 5,000 emails monthly, with no credit card required. 

Maileroo’s paid plans start at $10 monthly for 25,000 emails or $0.40 per 1,000 emails. Customers can also sign up for its $15 monthly plan with 10,000 emails or scale up to $250 monthly with up to 1 million emails, which translates to $0.25 per 1,000 emails. 

Even more interesting about this provider is that it can customize a plan for large businesses and enterprises with a much bigger email-sending requirement. Marketers interested in scaling up their email-sending capabilities can message Maileroo’s Support Team.

Features

With Maileroo, you can access all its outstanding features and tools regardless of your plan. Once you sign up for any company’s plans, you will enjoy clean, shared, and dedicated IPs with automatic IP warmup. You get help designing and sending transactional emails and enjoy real-time analytics to help you manage and adjust your email-sending campaign when necessary. Also, Maileroo is committed to the security and safety of your email-sending campaign. This SMTP Relay service provider adds 2FA, email, and Live Chat support to keep everyone safe.

MailGun

MailGun offers a scalable and flexible email delivery service that allows developers and markets to send, receive, and track emails confidently. Founded in 2010, it was one of the early email software vendors and has grown into one of the industry’s trusted providers, with over 10,000 developers.

MailGun sports SMTP and RESTful HTTP API methods for sending emails, making it easier for marketers to add different functionalities. The software beats most industry metrics, making it one of the most reliable SMTP Relay service providers. According to its website, MailGun’s software boasts a 97.4% delivery rate, exceeding the industry average of 85%, with a 0.42% bounce rate where the industry average is 2%.

Pricing

You can test and explore MailGun’s tools and features for FREE for 30 days, then pay $35 monthly. Developers and customers wanting to try the company’s free service must complete its registration process and add a credit card to ensure no spammers will sign up. MailGun assures its customers that the card won’t be charged during the 30-day trial unless they send over 50,000 email messages.

Features

MailGun offers its customers a quick and convenient way to enjoy its email delivery service. Sign up and add a domain to enjoy its robust email APIs and comprehensive documentation. Then, add the DNS records provided by MailGun to verify the domain. Next, you need to generate API keys and configure the application. After completing these steps, then you’re ready to start sending emails!

MailGun promises flexible and reliable sending since it's built on a solid infrastructure. The company’s software is built on Google with 99.99% uptime, is SOC I and II certified, and is also GPR, HIPAA, and ISO 27001 compliant.

SendGrid

SendGrid is a popular software provider that lets customers enjoy SMTP services without requiring email servers. What makes SendGrid unique in the industry is its use of its cloud-based and proprietary Mail Transfer Agent, or MTA. Using a client-server application architecture, the MTA software transfers emails from one computer to another. This software implements both the sending and receiving parts of SMTP.

In addition to routing emails, SendGrid’s proprietary MTA helps in recipient lookup, queuing, and filtering, as well as in implementing email security from authentication to encryption. SendGrid is the choice email software provider of more than 80,000 customers, including some of the top companies such as Uber and Spotify.

Pricing

Like most SMTP Relay service providers, SendGrid offers its customers and developers the chance to start for FREE and then pay as you scale your email-sending requirements. SendGrid’s Free Trial is available upon signup; no credit card is required. Your free account lets you send up to 100 emails daily for free with access to analytics and deliverability optimization.

However, a free account doesn’t give you access to a dedicated IP, and there is no sub-user management or single sign-on (SSO). Developers and customers who need tools and services can upgrade to Essentials at $19.95, Pro at $19.95 per month, and Premier with custom pricing, perfect for enterprises with huge email-sending requirements.

Postmark

Postmark is a popular email software and SMTP service provider for businesses, marketers, and websites. The provider’s main selling points are security, fast email delivery, and ease of integration. Sending emails using Postmarket’s SMTP service is easy, and it just involves copying some credentials into the config file, and you’re good to go. Also, Postmark supports TLS to encrypt data between the servers and your application. In addition to its ease of integration into any stack,  the software is also GDPR compliant, which means it is serious about protecting customer data.

Pricing

Postmarket offers friendly pricing for its potential customers. The service starts at $15 monthly for 10,000 emails. The FREE Postmark account includes support for 100 emails monthly. In addition to this basic service, a free account enjoys a 45-day message retention with excellent deliverability and stellar support.

If you’re ready for the company’s paid service, you can start with its $15 monthly fee for 10,000 emails, $55 monthly for 50,000 emails monthly, or go all out with up to $775 monthly, which supports up to 1.5 million emails. And if this is enough for an enterprise, Postmark also offers custom pricing.

Features

In addition to its stellar support and API and SMTP sending, Postmark also throws in a few tools and features to help promote a seamless email-sending campaign. For example, all accounts enjoy the provider’s data and analytics, which include click and unsubscribe tracking, custom tagging, email client and device tracking, and real-time notifications. Postmark boasts full message retention of up to 45 days. This provider prioritizes security through the use of 2FA and opportunistic TLS.

Resend

Resend is a relatively new email software and SMTP relay service industry player. The company was launched in 2022 as an open-source project and slowly developed its email-sending platform until 2023 when it joined Y Combinator’s winter batch. Like many companies, Resend boasts transactional email service and marketing emails at different price points.

Pricing

Resend customers can start with the company’s FREE Trial which allows up to 100 emails daily or up to 3,000 emails monthly. This free account also comes with email support, 1-day data retention, and the ability to schedule emails. Unfortunately, your free account doesn’t add a single sign-on or access to a dedicated IP. To get more tools and resources in sending transactional emails, you can go for Pro at $20 monthly or Enterprise with its custom pricing. If you’re going with the Pro package, you can send up to 50,000 emails. Also, this Resend package comes with Slack support, unlimited domains, and three-day retention.

Features

Resend boasts a modern email-sending platform that’s easy to use and integrated into any existing platform.

At Resend, new customers get the help and resources they need for SMTP integration. To integrate SMTP, developers will need the following credentials:

Host: smtp.resend.com

Port: 465

Username: resend

Password: YOUR_API_KEY

Replace YOUR_API_KEY with an existing key or create a new API Key

Resend also features an SMTP configuration page for its customers and developers.

SocketLabs

SocketLabs was founded in 2007 to help marketers and business owners send emails effectively. The company’s email software and SMTP services are anchored on technology, deliverability, support, customer experience, and consulting. The SocketLabs Hurricane MTA is at the heart of the company’s email delivery infrastructure. Since it runs on a proprietary MTA, SocketLabs offers bespoke solutions. Customers who sign up for its email delivery services can enjoy flexible APIs, advanced reporting and analytics, and also benefit from the latest security and encryption technology.

Pricing

At SocketLabs, customers can choose from three service packages: Core, Pro100k, and Enterprise. The Core package costs $39.95 and includes 40,000 emails monthly and API and SMTP functionality. It also comes with a 10-day insight history and a 90-day performance history. Small business owners starting and need basic email-sending support should pick the Core package. 

SocketLabs offers the Pro100k package, which provides a scalable SMTP relay service that starts at $79.95 and goes up to $425.00. The pricing under this package varies depending on the number of emails required. For features and tools, the Pro100k package brings everything from the Core package, access to a dedicated IP address, a 30-day insight history, and a 180-day performance history. Finally, customers can choose Enterprise, which has advanced tools and email reporting.

Features

SocketLabs promises more functional email-sending software using its proprietary SocketLabs Hurricane MTA. Aside from its SMTP Relay service, the company also features a few add-ons, from reporting to traffic shaping, and customers can rely on its 99.99% reliability. Also, SocketLabs allows its customers to split transactional mail from email marketing. SocketLabs makes it easier to process complaints and unsubscribes and generate reports quickly.

SMTP.com

SMTP.com boasts over two decades of experience providing premium email delivery and relay solutions that enable reliable, high-volume email sending. As one of the top email software providers, SMTP.com boasts an impeccable reputation from ISPs with super-fast delivery at 99% system uptime.

Pricing

Setting up an SMTP Email Relay is easier with  SMTP.com thanks to its different packages and friendly pricing plans. There are four standard SMTP email packages: Essential, which starts at $25 monthly and covers up to 50,000 emails; Starter, Growth, and Business. Small business owners and marketers can start with the Essential Package, which covers up to 50,000 emails and includes access to shared IP, email relay API, detailed reporting, and reliable expert support.

Finally, the company also boasts a custom package for its high-volume senders, who require a minimum of 250 million emails monthly.  If you’re running a huge business, this custom package offers a dedicated instance of the SMTP platform, a 100% dedicated IP and MTA, dedicated and scalable API, and on-demand statistics aggregation.

Features

SMTP.com is a popular industry provider with a solid infrastructure, 99% system uptime, and 98% customer satisfaction. Unlike some SMTP relay service providers, SMTP.com boasts up to 90 days of data retention and comes with solid authentication through SPF records, custom DKIM, constant feedback loops, and a dedicated IP address.

AWS SES

SWS SES, or Simple Email Service, is an Amazon cloud-based email service that promises quick integration into any application for high-volume email sending. Amazon uses its SMTP interface to do this efficiently without an on-premise Sinile Mail Transfer Protocol or SMTP email server. The company supports deployments, including shared, dedicated, or owned IP addresses. Users who sign up for an SWS SES account can also get sender statistics and email deliverability tools to help business owners make informed marketing strategies.

Pricing 

SWS SES offers a pay-on-the-go arrangement for its customers without complex licensing and long-term contracts. Like most SMTP relay service providers, AWS by Amazon boasts a Free Tier, which gives access to essential tools and resources and expires after 12 months. If you’re after a paid account, use the AWS Pricing Calculator, which lets customers estimate the cost of the selected AWS product and service.

Features

Amazon SES offers customers different email methods, including its popular Simple Mail Transfer Protocol (SMTP) interface. By default, Amazon SES sends emails from shared IP addresses. These shared IP addresses are perfect for new customers who want to start sending from an established IP address. This option is already integrated into the company's base pricing. Amazon also offers dedicated and managed IP addresses. 

Also, Amazon supports the ‘Bring Your Own IP’ or BYOIP program. Under this option, the company allows its customers to bring and use their existing IP addresses. Finally, Amazon offers tools that let developers finetune their email-sending strategies. The software collects information about the entire email response funnel, including the number of sends, deliveries, clicks, bounces,  and complaints. Developers can access the data in the Sending Statistics report in the Amazon SES console.

MailerSend

MailerSend is a United States-registered company with over ten years of experience sending high-volume emails. It offers a ‘plug-and-play’ approach to setting up and sending transactional emails to target customers. Developers and marketers interested in using the service can use MailerSend’s WordPress SMTP plugin to quickly connect the account and send high-volume emails from a WordPress website.

The company offers bespoke solutions for several industries by providing email services for SaaS, e-commerce, banks, e-commerce, and financial institutions. MailerSend’s email API and SMTP relay service boast high deliverability, easy integration, and robust API with reliable technical support.

Pricing

With MailerSend, customers can count on straightforward and fair pricing based on actual needs without a long-term commitment. MailerSend offers four standard pricing packages: Hobby, Starter, Professional, and Enterprise. Hobby is MailerSend’s Free Account that allows up to 3,000 emails monthly. In this package, you’ll be charged $1.00 for an extra 1,000 emails sent. The Professional is the most popular and highly recommended package at $88.00 monthly. This package includes 50,000 emails, 150 monthly SMS, and 400 email verification credits.

Features

MailerSend’s SMTP relay service lets business owners send transactional emails quickly, securely, and at scale. You don’t need advanced coding skills to use SMTP’s service. Users can easily send emails from any app, device, or client using an SMTP name, username, port, and password. Also, MailerSend boasts a friendly user interface that allows users to manage domains easily. Finally, authentication is never a problem since MailerSend uses SPF and DKIM protocols to authenticate emails, while its IP allowlist lets marketers protect the account against unauthorized use.

Email Octopus Connect

Email Octopus Connect is an email marketing platform that strongly focuses on simplified email sending and managing subscribers’ lists. Founded in 2015, the company has helped thousands of businesses and organizations send emails conveniently and efficiently at affordable prices. 

Pricing 

At Email Octopus, two plans are available: get it free with the Starter Plan or enjoy more features with the Pro Plan. The Starter Plan allows you to reach up to 2,500 subscribers and send up to 10,000 emails monthly. Meanwhile, the Pro Plan starts at $9 monthly for 500 subscribers, depending on the number of subscribers you want to reach. This plan allows you to send over 5,000,000 emails to over 500,000 subscribers. 

Features

Email Octopus allows you to use its drag-and-drop editor feature, helping you create templates. It also aims to grow your existing subscribers by creating landing pages and email sequences. To get to Email Octopus services, you must sign up and activate your email by providing your name and a link to your website. However, if you don't own a website, Email Octopus accepts a link to your social media page. In addition, you need to sign in and generate an API key to give your page or website permission to interact with your EmailOctopus account. 

Brevo

Brevo offers more ways to grow your business with its all-in-one platform to manage customer relationships. The company was founded in 2012 and now serves more than 500,000 customers globally. In addition, Brevo is compliant with the General Data Protection Regulation (GDPR), giving customers new protection rights and better access to personal data. You can avail of the different Brevo plans at an affordable price. 

Pricing 

New customers can discover Brevo for free while enjoying 300 emails daily, a drag-and-drop editor, and SMS campaigns. But you can upgrade your account to Starter, Business, or Enterprise, depending on your needs. The Starter Plan starts at $9 monthly and allows 5,000 emails to be sent daily with no sending limit. For marketing managers and e-commerce professionals, a monthly business account of $18 is recommended. If you want higher volumes of emails, you will need a custom Enterprise plan, and the price may vary. 

Features

Brevo allows you to work smarter, not harder, as it combines everything you need in digital marketing. It is a multi-channel platform specializing in marketing, sales, conversations, customer data, and Messaging API. Specifically, Brevo offers CMS integration, marketing automation, SMS and WhatsApp campaigns, multi-table data models, and inbound parsing. 

turboSMTP

turboSMTP is a reliable Simple Mail Transfer Protocol (SMTP) service designed to facilitate and secure email delivery. The company was launched in 2009 as an independent SMTP provider catering to more than 100,000 customers across six continents. User data protection is its top priority, ensuring customers' 100% compliance with GDPR. 

Pricing 

If you want to avail of turboSMTP, you can choose from monthly plans or pay-as-you-go offers, which will vary depending on the number of emails sent. For the Free account, you can send 6,000 emails monthly, but there are limited features to enjoy. For business owners with more considerable demands they can upgrade to a Basic Plan starting at $14.95 monthly with a minimum of 1,000 relays per month. A Professional Plan starts at $ 79.95 per month with a maximum of 2 million relays monthly. Meanwhile, the Enterprise Plan is a custom email program for professional web marketers. 

Features

As an outgoing mail server, turboSMTP ensures maximum email delivery rates in real-time, straight to your recipient’s inbox. It also offers secure delivery of transactional emails such as password resets or order confirmation. TurboSMTP can boost your email deliverability as it comes with a dedicated IP. In addition, turboSMTP provides round-the-clock support via ticket, telephone, and live chat. 

The API of turboSMTP requires authorization. You will need the following information to complete the authorization process: 

For Authorization via ConsumerKey/ConsumerSecret: 

consumerKey: Consumer Key Granted.

consumerSecret: Consumer Secret Granted.

(Use /consumerKeys/create create a consumer key/secret pair)

For Authorization via Authentication Key: 

Authorization: Authorization_Key

(Use /authentication/authorize to obtain an API Key)

SMTP2Go

Enjoy hassle-free, fast email delivery and real-time tracking with SMTP2Go. The company was founded in 2006 and is headquartered in New Zealand. It offers reliable SMTP services to businesses and individuals in over 130 countries. SMTP2Go is GDPR-compliant, holds Trusted Site Certified Secure certification, and is in the Deloitte Technology Fast 500 ranking.

Pricing

SMTP2Go Plans pricing may vary on the features you get. For instance, SMTP2Go offers a Free Plan to new customers available within 14 days upon registration. You can send a maximum of 1,000 emails monthly, five days of email reporting, and ticket support. However, you can also choose the Starter Plan at $10 per month or the Professional Plan at $75 per month to fully enjoy SMTP2Go email delivery services. Upgrading to a Professional account offers you a dedicated IP address and up to 100,000 emails monthly. 

Features

With SMTP2Go, you can enjoy all-inclusive features and enhanced email deliverability and security. SMTP2Go supports DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF). It is secured with Transport Layer Security/ Secure Sockets Layer (TLS/SSL) and offers real-time analytics and Spamtrap detection. 

Mandrill

Mandrill was initially launched as a separate company by MailChimp in 2012, but later, it was integrated into MailChimp’s add-on email services. This add-on allows the sending of one-to-one transactional emails triggered through user actions such as password requests or order placement. To fully experience the services, you need to create a MailChimp account. There’s a FREE Trial option, but you can always upgrade your subscription to Standard or Premium at different prices. 

Pricing 

Mandrill is a reliable email marketing service that allows personalized one-to-one transactional emails. You can activate the Free plan on MailChimp’s website to use Mandrill. But, if you want expanded services, there’s a Standard plan or Premium at discounted pricing for a limited period. The Standard plan is cost-effective and starts at $10 for 12 months, which is beneficial in growing your business. If you’re going for the Premium account, you can send up to 150,000 emails monthly at $175 for 12 months.  

Features

Transactional emails involve password reminders, order placement and confirmation, and other notifications. Mandrill is one of the popular transactional email services, allowing your message to reach the right inbox and not spam folders. 

 Netcore’s PepiPost

Netcore’s Pepipost is a cloud-based email delivery service specializing in reliable and scalable email delivery solutions for transactional and marketing purposes. Netcore has been in the business for more than 25 years, and Pepipost proves its commitment to providing the best marketing services to customers. Netcore is GDPR-compliant and received recognition as Forrester’s Wave Strong Performer 2024.

Pricing 

Pepipost offers its customers a flexible pricing model based on the number of emails sent. The Free Plan allows sending 30,000 emails per month, while paid plans start at $25 based on the email volume. The Free Plan is more suitable if you are still a business start-up in e-commerce, travel, or direct-to-consumer. 

Features

Netcore’s Pepipost lets you enjoy features like transactional email deliverability, real-time analytics, and email API. Pepipost also offers a competitive platform and services for customer data platform, marketing automation, Co-Marketer AI, and customer engagement. Pepipost’s infrastructure is built on Google Workspace, e-Interact, NCIS multi-Cloud, and Microsoft 365 for Business and Enterprise. 

ZeptoMail

ZeptoMail by Zoho is a trusted email delivery service for transactional emails. Zoho has been in the market for 25 years and continues to invest in customer support and product development, and ZeptoMail is one of these. With ZeptoMail, you can send emails for password resets or invoices from websites or applications. Pricing is flexible; you can try the Free Plan before going for the paid ones.  

Pricing

Customers can get flexible pricing for its subscription plans. However, before you choose paid plans, enjoy up to 10,000 free transactional emails from your account. With ZeptoMail, the number of emails will depend on your available credit. One credit costs US$2.50, and it is equivalent to 10,000 emails. You may also choose custom pricing depending on the number of emails you intend to send. ZeptoMail also provides Pay-as-you-go pricing for customers who do not want to pay monthly. 

Features

ZeptoMail is exclusive for transactional email delivery on time for better customer satisfaction. It offers well-maintained IP addresses, delivering emails directly to inboxes instead of spam folders. In addition, you can expect detailed logs and reports for better email performance and troubleshooting. 

Elastic Email

Elastic Email started in 2010 as an email service provider offering cost-effective, flexible, and scalable solutions. The company is a trusted email delivery service provider for innovative businesses. It specializes in email marketing, API integration, analytics and reporting, and contact management. 

Pricing

If you’re starting your business and want to try Elastic Email services, you can try it for free upon signing up. Customers can also enjoy competitive rates for email marketing and email API. The Starter Plan starts at $29 per month, while the Pro Plan pricing is based on the number of emails sent.

For the Pro Plan, you can send up to 15 million emails to 1 million contacts at $2,750 monthly. All features of the Starter Plan are available, including user management, a form with reCAPTCHA, email automation, and unlimited custom fields. 

Features

The company specializes in email marketing, API, verification, and third-party integrations to help customers grow contact lists and send more emails. It offers integration for eCommerce, analytics, and CMS such as Cloudways, WordPress, MailChimp, WHMCS Services, and Zapier. If you need more information about APIs, then Elastic Email provides access to API Libraries. 

SendPulse

Send Pulse is a multi-channel platform that combines digital marketing tools such as email automation, chatbots, an email builder, and web push notifications. Launched in 2015, it has built a positive reputation as a marketing automation platform over the past years. It started with a team of 15 specialists and is still growing with 180 employees.  

Pricing 

Send Pulse customers can enjoy its services with its FREE Trial offer, allowing up to 500 emails per day or 15,000 emails per month. This Free account allows three sender email addresses and a single domain. Unfortunately, this Send Pulse trial offer offers limited emails and allows only three sender email addresses and a single domain. Upgrade your plan to a Pro account at 9.60 monthly to get full access to every email marketing feature.

For the Enterprise account, Send Pulse pricing plans require at least 2,500 email contacts. This lets you enjoy unlimited email sending, more extensive image storage, unlimited users, and advanced segmentation options. 

Features

To start, you must sign up for an account and enter the validation code sent to your email to complete the registration process. Send Pulse offers personalized support for email campaigns, transactional emails, SMS campaigns, and Pop-up forms. It provides digital marketing tools for building landing pages, web push notifications, and CRM to automate customer transactions.

Aside from the monthly subscription, Send Pulse also allows Pay-as-you-go plans to its customers. 

Bird

Bird is an AI-powered Customer Relationship Management (CRM) platform for marketing started by Robert Vis in 2011. Unlike other SMTP relay service providers, Bird’s message-sending services also cover SMS and WhatsApp.Bird’s infrastructure includes SS7, SCCP, SMPP, SIP, and PMTA software, all developed in-house.

In 2023, it introduced Bird CRM, which provides marketing, customer support, payments, and email delivery services. The company markets itself as the ‘only vertically integrated CRM that owns their stacks’, allowing it to offer faster, cheaper, and more reliable services.

Pricing

Bird offers two pricing schemes: contact-based and custom. In contact-based, the monthly fee depends on the number of emails sent monthly, where pricing starts at $45 per month for 3,000 emails and up to $440 a month to cover up to 50,000 messages. There’s also the Enterprise account, which offers custom pricing depending on the number of messages. Under Bird’s pricing scheme, the customer is charged based on the number of targeted contacts every month, and all other features are free.

Features

When you sign up for a Bird email-sending package, you instantly access all its in-house features at no extra charge. Some helpful features to use on these packages are the customer profiles and audiences, email, SMS, and WhatsApp templates, as well as signup forms to capture subscribers.

DuoCircle

DuoCircle is a California-based email deliverability company specializing in quick and efficient email deliveries. One of the company’s primary products is the outbound SMTP service, which comes with quick and efficient sending and anti-phishing protection as part of its promise.

Like many top email software providers, DuoCircle also boasts a comprehensive suite of email deliverability services, including email monitoring, authentication, analytics, and sender reputation management. These services help business owners deliver their emails to the target inboxes instantly. In addition, DuoCircule also offers email security services, including phishing protection, spam filtering, and malware scanning.

Pricing

DuoCircle offers seven service packages that can suit the needs of businesses and developers with varying needs. New customers can start with the FREE plan, which covers up to 1,000 messages. Customers with bigger email-sending requirements can scale up to the company’s paid plans that start at $4 monthly for 2,500 messages up to $165 monthly with 300,000 emails. DuoCircle also boasts a Custom plan for enterprises like most email software service providers.

Features

All paid plans of DuoCircle include DKIM signing, real-time reporting and analytics, and detailed tracking. Developers can access multiple delivery ports; email sending comes with TLS encryption. By integrating TLS encryption, customers can always count on secure message delivery.

Furthermore, paid users can also count on anti-spam and outbreak detection tools. These advanced multi-tiered anti-virus engine tools protect your data if the network is compromised. Finally, DuoCircle commits to defending the network's reputation and the promised 24/7 customer and technical support.