Best SMTP Services
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What are SMTP Services?
SMTP services and SMTP relay services enable organizations to send emails, including bulk emails to customers and users from their website. SMTP service providers provide an SMTP server that can be hosted or used on-premise so websites can send emails and ensure high deliverability of emails and mass email campaigns. Mail transfer agent (MTA) services are part of SMTP services. Compare and read user reviews of the best SMTP services currently available using the table below. This list is updated regularly.
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1
SMTP.com
Ziff Davis
Reliable SMTP relay and email delivery services. Powerful email delivery services that enable you to send and track high volume emails effortlessly. Integrate and start sending in minutes. All your transactional, email relay and email delivery needs under one roof. Whether you need a low-latency email delivery provider for your transactional emails, scalable infrastructure for high-volume sends or reliable backend solution for your marketing campaigns, SMTP is built to deliver. Reputation Defender is SMTP’s proprietary technology that uses big data to proactively monitor your email list health and safeguard your domain and IP reputation among ISPs by suppressing bad emails in your sends from hard and soft bounces. This ensures your delivery rates and inbox placement incrementally gets better over time.Starting Price: $25 per month -
2
Brevo
Brevo
Say hello to Brevo (formerly Sendinblue) — the platform that helps you build customer relationships across Email, SMS, Chat, and more. The complete toolkit to turn one-time browsers into long-term customers. Connect with contacts directly in their inbox with beautifully designed email campaigns. Send targeted messages that land straight in your customers' pockets. Brevo empowers businesses to build and grow relationships through marketing automation, email campaigns, transactional emails and SMS messages. What makes us different? Brevo is powered by our world-class customer happiness team and we offer pricing plans guaranteed to make you smile. Our platform combines a robust suite of services within a single, user-friendly solution. Happy Sending!">
Starting Price: €25 per month -
3
Moosend
Moosend
All the benefits of email marketing minus the coding. Size doesn’t matter to us. Big or small, we help your business deliver powerful emails that get opened and clicked every time. And are drop-dead beautiful. Simplify your marketing tasks and reach your goals at the push of a button. Save time and headaches with Moosend’s advanced automation features and thrust your email marketing forward. No more blah blah for your subscribers. Surprise them with strikingly relevant emails they actually want to read and send your open and click rates through the roof. Move, crop, resize, group, add and change anything you want and create beautiful landing pages in just a few minutes and say goodbye to web designer expenses. Grow your mailing list around the clock, collect valuable data effortlessly and share your forms across all your online channels with our feature-packed form editor.Starting Price: $10.00 per month -
4
SendGrid
Twilio SendGrid
Email is the backbone of your customer engagement. The Twilio SendGrid Email API is the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. Our flexible Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.Starting Price: $19.95 per month -
5
Elastic Email
Elastic Email
Tens of thousands of companies already send their emails with Elastic Email. An amazing Email Marketing platform, built on the most cost-effective Email API. Deliverability, reliability and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Build better relationships with your recipients with every campaign you send. Elastic Email provides all the marketing tools you need to help your contacts feel connected. Deliverability, reliability, and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Get the most out of your email marketing. Create beautiful emails, send newsletters, and automate your campaigns in a flash.Starting Price: $5 one-time payment -
6
Labnify
Labnify
Labnify provisions email API and SMTP-integrated mailer so you won't need any of those pesky SMTP credentials. A system that delivers and track mass emails reliably enriched with features like real-time analytics, open/click metrics, bounce/spam tracking, template builder, and more. No one likes being blacklisted. That's why our innovative blacklist monitoring feature keeps a watchful eye on your sending reputation, ensuring your emails always land in the recipient's inbox. Plus, Labnify takes email authentication seriously, utilizing DKIM/SPF authentication to enhance your deliverability and add that extra layer of security. Millions of emails have relayed via Labnify as it's easy to work with. Simply import your email list and hit SEND without the need for an SMTP credential, making it a 2-in-1 email marketing stack. Built on the most cost-effective Email API, deliverability and scalability matter. Easily connect and send your email using our automated system and scale.Starting Price: $99/month -
7
turboSMTP
turboSMTP
TurboSMTP understands that email is not just a means of communication but the backbone of your customer engagement strategy. TurboSMTP Email API is trusted by developers and marketers alike for its time-saving features, scalability, and delivery expertise. Our service offers a flexible SMTP relay solution along with advanced features tailored to meet the needs of businesses of all sizes. With our intuitive dashboard, powerful features, and dedicated support, ensuring the delivery of your emails is seamless and uninterrupted. TurboSMTP's infrastructure is built to scale, whether you're sending a few hundred emails or millions. Integration with our service is effortless, with sample code libraries available in multiple languages, interactive documentation, and customizable templates. Monitor engagement data and optimize deliverability with our comprehensive reporting tools. Trust TurboSMTP to deliver your emails reliably and efficiently, empowering you to engage with your audience.Starting Price: $14.95 per month -
8
Bird
Bird
Bird (formerly MessageBird) is the next-generation CRM for Marketing, Sales, and Payments, powering over 5 trillion annual messages across Email, SMS, and WhatsApp. Leading brands grow cost-efficiently with Bird through personalized interactions on Email, SMS, and WhatsApp. The world's most innovative companies build communication solutions using Bird's applications and APIs. Get started today and talk to your customers over any channel, for any use case, anywhere in the world. Marketing messages, push notifications, order updates, delivery alerts and more. Operational bottlenecks slowing your growth? Use automated conversations and workflows to collect critical information up front, reduce manual tasks, implement self-service flows, and route chats to the right agent. Get up and running in minutes on our reliable, auto-scaling APIs with extensive documentations, complete API references and intuitive SDKs.Starting Price: $45 per month -
9
Amazon SES
Amazon
Amazon Simple Email Service (SES) is a cost-effective, flexible, and scalable email service that enables developers to send mail from within any application. You can configure Amazon SES quickly to support several email use cases, including transactional, marketing, or mass email communications. Amazon SES's flexible IP deployment and email authentication options help drive higher deliverability and protect sender reputation, while sending analytics measure the impact of each email. With Amazon SES, you can send email securely, globally, and at scale. Using either the Amazon SES console, APIs, or SMTP, you can configure email sending in minutes. Amazon SES also supports email receiving, enabling you to interact with your customers at scale. Regardless of use case or sending volume, you only pay for what you use with Amazon SES.Starting Price: $0.10 per month -
10
MailerSend
MailerSend
MailerSend is a new kind of transactional messaging service designed for developers to work faster and smarter. Intuitively designed so anyone can contribute to transactional email and SMS, while a powerful sending infrastructure and flexible payment plans let you scale your sendings quickly. Built by deliverability experts, and with the inbuilt email verification tool, you can rest easy knowing your messages will get delivered. Plus, inbound routing allows customers to interact with your messages. Try it for yourself! Get started for FREE with 3,000 messages per month, then only pay for what you send. No contracts! The free plan has the features you need, including always 24/7 technical support.Starting Price: $30 per month -
11
Postmark
ActiveCampaign
ActiveCampaign Postmark is the email delivery service that developers and product teams actually like. Send transactional and marketing emails and get them to the inbox, every time. Postmark maintains one of the best delivery reputations in the industry by routing transactional and promotional messages through parallel but separate sending infrastructure.Starting Price: $10/month for 10,000 emails -
12
MailerQ
MailerQ
MailerQ is a high-performance on-premise Mail Transfer Agent (MTA) for delivering millions of emails per day. It is built with a strong focus on performance, ease-of-use, and insights. The MTA comes packed with an intuitive Management Console, REST API, and other functionality necessary for every serious sender to retain and improve their sender reputation and deliverability rates. That’s why it's increasingly becoming the preferred solution of choice for senders of all kinds, from Email Service Providers and e-commerce platforms to banks and government institutes. The management console allows for real-time insights in delivery attempts and results, queues, error logs and a lot more per MTA, IP, target and even per customer, campaign or message type. Response patterns allow you to classify bounces, process feedback loops and adapt MTA behavior based on server responses. This will help you maximize your email deliverability and sender reputation.Starting Price: €10,000 one-time payment -
13
Flowmailer
Flowmailer
-- The email engine you can build on -- We're everything that happens under the hood of your email communications. Reliable Email API with endless capabilities & features ready for integration. Flowmailer's Email Engine provides all the tools you need to build a professional email strategy. From marketing to customer support, from account management to warehousing, every email sent is valuable. Where others choose to focus on an email's looks rather than its performance - we opt for solid email deliverability first. Every email that hits the inbox is a valuable moment between you and your customer. Email Engines change the way we send emails. Ready to create the unparalleled email experience your customers deserve?Starting Price: €89 per month -
14
Maileroo
Maileroo
At Maileroo, we provide a powerful platform for both SMTP relay and email marketing. We ensure fast, reliable email sending with real-time tracking of deliveries, clicks, opens, and bounce rates. With our free Email Verification API, dedicated IPs, and DNS Records for sender authentication, we help reduce bounced emails and improve deliverability. Our email marketing platform makes it easy to create and manage campaigns. You can personalize emails, use our drag-and-drop email templates, form builders, and flexible Contacts API. We provide real-time statistics and in-depth analytics to help you optimize your campaigns and boost engagement. We also offer seamless DNS setup, automation tools, multi-sender identities, and efficient contact management. Whether you're a small business or growing enterprise, Maileroo offers budget-friendly pricing and everything you need to scale your email marketing, making it a smart choice for businesses of all sizes.Starting Price: $10 per month (25,000 emails) -
15
SocketLabs
SocketLabs
SocketLabs is a reliable email delivery engine built designed to help companies of all sizes send marketing and transactional email fast and easy. Trusted by leading organizations such as Virgin and the American Red Cross, SocketLabs combines a feature-rich outgoing mail server delivery solution, an easy-to-use dashboard interface, and an even easier setup. It also features outgoing mail servers, advanced analytics, and top notch customer support. -
16
Netcore Email API
Netcore
Choose the best email API or SMTP for the most robust email delivery experience. Netcore Email API (formerly known as Pepipost) provides a powerful transactional email delivery infrastructure and AI-powered inboxing which is reliable, scalable, secure and easy-to-use, at the most affordable pricing plans. We help brands to engage with their customers at the right moment with the right content over emails.Starting Price: $25 per month -
17
GreenArrow
GreenArrow Email
It’s time for smarter tools and more transparent data so your messages reach their destination. Plus, more insight into subscriber activity will help teams fine-tune messages, make connections, and grow business. It’s time to turbo-charge your technology. Need to send 8 million messages per hour from a single server? High-speed, high-volume, we’ve mastered it. Consider your lofty goals reachable. It’s time for a team who can actually help you. We’re not just problem-solvers at GreenArrow. We’re solution coordinators. We tackle the tough stuff, but we also hand you tools and knowledge so you get smarter about your software. GreenArrow’s premium, high-performance solutions and unmatched support team can help you grow business and build better subscriber relationships.Starting Price: $600 per month -
18
Inboxroad
Inboxroad
Ensure your emails get delivered to your users. Scale up to 10M+ emails per month with our powerful SMTP infrastructure and robust API. Enjoy personal weekly advice in your mailbox. Our email expert offers you a weekly delivery report full of tips and optimizations. Get 24/7 support and monitoring. Reach us day and night through Whatsapp, phone or email. We are there to help when you need us. Don’t get lost in irrelevant data. Get a quick summary of your deliverability and find out specific bottlenecks. Instantly see how well your doing in terms of email deliverability. Select your last week, month or custom period of time. Optimize your delivery rate with detailed insights about bounces, deliveries & more. Pinpoint bottlenecks quickly. You receive weekly personal, actionable advice to optimize your email delivery rate further. Our experts monitor your email delivery 24/7 to make sure everything’s okay.Starting Price: €59 per month -
19
DuoCircle
DuoCircle
Reliable and secure email hosting services for SMB and Enterprise. Safely processing over 100 million emails per month for our customers. Enhanced gateway security and filtering, inbound email security, email service backup and outbound SMTP using a new high quality infrastructure for top quality results that our customers deserve. Products include, Secure email gateway, email backup MX, email forwarding, outbound SMTP and more. DuoCircle protects against phishing attack with Link Click Protection, a part of the Advanced Threat Defense Suite. You’re covered with Link Click Protection even if site content changes between clicks. You get total protection from phishing and your confidential corporate information is secured because your employees are simply prevented from visiting sites that misuse such information. You get instant feedback in the form of an alert when a suspicious link is about to be visited. -
20
SendPost
SendWorks
SendPost replaces manual workarounds, messy hacks and daily frustrations that come along with your email API/SMTP provider. See if you are sending only a few thousand emails then most email API solutions work well. You will choose one of them based on price, features or support. The real problem comes if you are one of the big senders—sending millions of emails per month. That's when managing multiple sending domains, IP-Pools and IP/Domain reputation becomes a severe headache. At that scale, even a minor dip in your email open rate or deliverability impacts your revenue. You want a solution which helps you understand what broke with your email deliverability and how you can fix it quickly. You don't want to spend hours wading through logs and manually checking if your domain or IP is blacklisted or your sending reputation is low.Starting Price: $7 per month -
21
PostageApp
PostageApp
PostageApp is an Email Service Provider (ESP) with a no-hassle approach. We aim to get you set up within minutes for our simple email service, while not compromising on the cutting edge of deliverability best practices, such as DKIM, SPF, rigid RFC compliance and full participation in ISP Feedback Loops. We offer startup-friendly shared plans for getting your MVP off the ground, with progressive increases through to our Dedicated IP plans allowing your app to grow and you to take ownership of your reputation ensuring maximum throughput. Our developer-focused support and tools get you started without a hitch, our in-house deliverability experts actively monitor and work with you to hit inboxes and our reporting, tracking and analytics provide insight into your campaign's success. -
22
Mailgun
Sinch
Mailgun is an email automation solution that is suitable for developers. With Mailgun, users are able to access a complete cloud-based email service for tracking, sending, and receiving emails sent via their applications and websites. Mailgun supports several programming languages including Python, Ruby, PHP, Java, and C#. With Mailgun's tracking feature, users are able to track all emails and reduce the chances of getting spam.Starting Price: $0.01/month/user
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