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
Moosend
Moosend
Moosend is an affordable, intuitive email marketing and marketing automation platform, suitable both for beginners and seasoned marketers. Thanks to its 1-day implementation, 100+ email templates, automation recipes, and AI Writer, users can set up their campaigns right away. And they can rest assured emails will reach the inbox as Moosend scores a 98% deliverability rate. They can also use advanced features like Audience Discovery to get smart segments based on customer behavior, transactional emails to send important updates at the right time, and custom reports to track the numbers they need. Users can pick a pricing plan that works for them. Or, create a custom plan with add-ons of their choice. No matter their plan, they can reach the support team through email or chat and get advice on how to optimize their campaigns. Finally, Moosend is GDPR and ISO-27001 compliant and follows all the latest security standards to guarantee customer data remains safe.Starting Price: $9.00 per month -
3
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 -
4
Mailjet
Sinch
The email solution for fast-moving teams. We know how hard it can be to find an affordable and effective email service. Mailjet is the perfect solution for your needs, our advanced features help you grow your business at a very reasonable price. Effortlessly craft beautifully responsive email in just a few clicks with our email editor, Passport. Use our rich library of free email templates or create your own design from scratch. Use Mailjet’s Collaboration Toolkit to work on the same email template or campaign in real time to increase your team’s efficiency. Drastically shorten feedback cycle with commenting and approval workflow features to go faster. Personalize each email with customer data you collect and segment your contact list to send the right content to the right customer. It’s easy to make each of your recipients feel special. Optimize the performance of your campaign with real-time statistics available with each sending.Starting Price: $9.65 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
SendPulse
SendPulse
A multi-channel marketing automation platform designed to help marketers create personalized promotional campaigns. Users can choose between email, SMS, and web push notification or build an elaborate message sequence by combining several channels in a single campaign. When it comes to email marketing, the platform packs all the necessary tools to automate lead nurturing and lead generation. Users can create custom subscription forms and grow their mailing list. Intuitive drag and drop allows users to design mobile-friendly email templates or choose a predesigned one from a massive gallery. The company, also, offers a transactional email service that users can use to send up to 12000 free emails via SMTP or API. SendPulse has its own chatbot builder. Users can create a Facebook Messenger chatbot or a Telegram chatbot and use it to send personalized campaigns or as an autoresponder.Starting Price: $9 per month -
8
Ongage
Ongage
Ongage is an email marketing platform for advanced email marketers who send high-end campaigns and want to understand their audience better. Developers and non-developers can run high-volume campaigns, with advanced capabilities, on an intuitive dashboard that provides full control and get the job done! Gain actionable insights into customer behavior, send data-driven emails, segment according to intent, and more. Design personalized experiences based on your customers’ actions, with automated real-time emails that funnel your audience towards your goals. Ongage is a one-stop-deliverability-shop, with system capabilities, reports, and experts that can slice and dice deliverability from every angle. Sync your CRM, CDP, and data warehouse with Ongage and optimize campaigns to make an impact in real-time. Connect any SMTP relay, MTA, or use the built-in Ongage SMTP to send your emails. In Ongage, you can send from several SMTPs or just one. -
9
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 -
10
Kingmailer
KingSMTP.com
KingSMTP.com (formerly known as Kingmailer.co, founded in 2017) is a Transactional SMTP service provider. It’s designed to help businesses reliably send emails such as order confirmations, password resets, or notifications, but it’s not intended for mass email campaigns or marketing.Starting Price: $0 per month -
11
MailerSend
MailerSend
MailerSend is a transactional email and SMS service designed for developers to work faster and smarter. A drag & drop builder and dynamic templates enable anyone at any skill level to create personalized transactional emails, while our SMS templates help you create professional transactional SMS messages. MailerSend’s advanced infrastructure scales with your sendings, while the latest security protocols protect your sender reputation. Plus, you can integrate your email sending and tracking in your apps using SMTP or a flexible email API. Built by deliverability experts, and with the inbuilt email verification tool, you can rest easy knowing your messages will be delivered and avoid spam folders, while dedicated IPs are available for high-volume senders. Plus, inbound routing enables your customers to interact with your messages, sparking conversations and increasing engagement. Get started for FREE with 500 emails, then upgrade for as little as $7/month for up to 5000 emails.Starting Price: Free -
12
OutboundSMTP
OutboundSMTP
DKIM Signing improves the inbox placement of mailbox providers like Gmail, Office365. Multiple Servers in the USA and Europe for increased reliability. No more headaches of managing and maintaining your own email server and IP reputation. Create SPF and DKIM records for your domain names, no prior experience required. If you are suffering from an IP blacklisting our SMTP relay service can solve your reputation problems. 24×7 technical support via phone, chat or email. We are here to ensure your mail gets delivered. you’ll be able to deliver your mail reliably to the inbox. We optimize our sending routes and closely monitor our IP reputations to ensure you the best possible service. We have a Zero Spam Policy that allows us to block or restrict messages that would damage our reliability or the reputation of our customers. You may send from an unlimited number of “From” addresses or domains after you have verified your domain ownership via DNS.Starting Price: $4 per 2,500 messages -
13
Sendcrux
Sendcrux
Our company Sendcrux specializes in email marketing, with a distinct expertise in cold email campaigns. What sets us apart is our remarkable performance, boasting industry-leading open and click rates. Our success hinges on a dedicated team, innovative strategies, and a deep understanding of audience engagement. We consistently surpass competitors, delivering unparalleled results for our clients. With a proven track record, we're the go-to choice for businesses seeking effective, high-impact email marketing solutions. Trust us to elevate your email campaigns, maximize engagement, and drive exceptional results. Choose us for a brighter, more prosperous marketing future.Starting Price: $19 per month -
14
SMTP2GO
SMTP2GO
Send and track all emails easily and securely with SMTP2GO, a reliable outgoing email service solution. SMTP2GO features a redundant, multi data center infrastructure that allows users to send emails even if there is a major internet outage. SMTP2GO has features like real-time analytics, bounce/spam tracking, weekly summaries, spamtrap detection, blacklist monitoring, DKIM/SPF, and more.Starting Price: $10 per month -
15
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 -
16
Mailcot
Mailcot
Email Marketing Services allows your business to email the consumer whenever you want. While not every email needs to be a sales pitch, your contact with the customer should provide something of value to them. If you are looking for a Transactional SMTP service, then you probably have an application that sends out either marketing or transactional messages and is searching for a host to relay these messages in bulk. Create fully automated campaigns with the world’s most intuitive workflow builder. Apply tags, trigger campaigns, add delays, branch with if-then logic, and do about 30 other things. With powerful functionality that allows businesses to move quickly. Drive more sales with email marketing that really resonates. Nurturing your leads with our platform , give points and covert it from lead to customers.Starting Price: $7.19 per month -
17
SMTPBOXES.COM
SMTPBOXES.COM
It is necessary to modify your domain name system (DNS) records in order to use our service.If you don't know how, we can do this for you for FREE! We provide you with SMTP connection for your mass email client, as well as free online sending platform upon registration. It is our job to check and maintain the servers in order to serve you with 98% deliverability! Please keep recipients list hygiene. We provide reliable and flexible SMTP servers that can adapt to all kinds of situations. There are two main categories in terms of email delivery process. Mass emails and transactional emails. We encourage you to use our service for mass email campaigns, although transactional emails work as well! You just have to tell us the purpose and we will make the adjustments. Email deliverability is something that we know you care about. That is why we periodically do email marketing campaigns ourselves and track the performance.Starting Price: €23.99 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
SMTP Provider
SMTP Provider
Experience the next level Email Marketing at an affordable price. Use a dedicated IP address to increase your sender reputation and avoid blacklisting of your IP due to someone else’s actions. Show that it’s really your own company and domain sending the message, and minimize the amount of messages that are marked spam by using the special cryptographic signatures SPF and DKIM. Our SMTP servers send your emails using secure SSL connection. Moreover, it's lightning fast. For each mailing list, you can discover the amount of messages sent out, the number of conversions made and links clicked, and many other details. Our SMTP service generates sending reports and delivery error reports. All reports can be downloaded to your computer. Your mailings won’t be sent to any addresses on the list of recipients who have unsubscribed, even if they are on a mailing list. Make sure that your emails are delivered to the inbox and not the spam folder. -
20
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. -
21
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 -
22
Codermails
Coder Technologies
Codermails is email software design by Coder technologies. It is best in class email marketing software perfect for newsletters, Promotion, Welcome mails, Product update etc. It works with window and Linux. It is open rate and click rate statistics inbuilt.Starting Price: $35 per month -
23
DIGINTRA
DIGINTRA Teleservices
DIGINTRA Teleservices offers a cloud-based, scalable SMS and communication platform tailored to businesses of all sizes. Founded in 2015 and headquartered in Bengaluru, India, the company bridges direct connections with telecom operators to deliver reliable, global A2P (application-to-person) messaging solutions. Core Offerings & Features: • Bulk SMS & A2P Messaging: Simultaneously send high-volume messages with support for scheduling, two-way interactions, and international delivery. • Flexible Integration: Supports APIs and SMPP connectivity, enabling seamless integration with existing applications or CRM systems. • Advanced Delivery Controls: Includes SMS load-balancing for enhanced throughput and real-time delivery reports (DLRs). • User-Friendly Dashboard: Track campaign progress, analyze performance metrics, and manage messaging. • Cost-Efficient Plans: Offers competitive, “pocket-friendly” pricing for both domestic and international messaging needs. -
24
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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