Best Transactional Email Software

Transactional email software refers to software that sends emails in response to pre-established actions taken by recipients. These products send email notifications in response to users’ actions; some examples include a welcome email after creating a new social media account, an email receipt from an e-commerce transaction, or an email for a new newsletter subscription. Businesses use these tools for automating personalized emails as transactions occur. Teams use transactional email software to track metrics such as emails sent, received, opened, and bounced. Transactional email tools are useful to for customer retention, sales, marketing, and public relation teams. Transactional email software integrates with additional types of software, such as CRM, email marketing, and e-commerce products, to maximize the benefits to your business.

To qualify for inclusion in the Transactional Email category, a product must:

  • Provide automated email response tools
  • Enable emails to be sent automatically as a result of action-based triggers
  • Send customized or personalized emails
  • Sync with business software such as e-commerce, social media, or other tools
  • Provide administration tools to track emails sent and received, as well as their results

Transactional Email Software Grid® Overview

The best Transactional Email Software products are determined by customer satisfaction (based on user reviews) and market presence (based on products’ scale, focus, and influence) and placed into four categories on the Grid®:
  • Products in the Leader quadrant are rated highly by G2 Crowd users and have substantial Market Presence scores. Leaders include: Mandrill, SendGrid, Mailgun, Amazon Simple Email Service (Amazon SES), SendinBlue, and SparkPost
  • High Performers are highly rated by their users, but have not yet achieved the Market Presence of the Leaders. High Performers include: Postmark, Elastic Email, Pepipost, and SMTP2GO
  • Contenders have significant Market Presence and resources, but have received below average user Satisfaction ratings or have not yet received a sufficient number of reviews to validate the solution. Contenders include: Mailjet
  • Niche solutions do not have the Market Presence of the Leaders. They may have been rated positively on customer Satisfaction, but have not yet received enough reviews to validate them. Niche products include: SocketLabs, MessageGears, MailUp, and Customer.io
G2 Crowd Grid® for Transactional Email
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High Performers
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    Transactional Email reviews by real, verified users. Find unbiased ratings on user satisfaction, features, and price based on the most reviews available anywhere.

    Amazon Simple Email Service (Amazon SES) is a bulk and transactional email-sending service.


    SendGrid is a leader in customer communications. Our email delivery platform helps developers and marketers send with confidence. We are trusted by over 55,000 paying global customers - big and small - to drive engagement and business growth through their email program. We help customers send with confidence by providing: Expertise: We pioneered the cloud-based email industry, and continue to invest in expanding our large team of experts so we’re on the cutting edge of what’s next (and delivering that intelligence to our customers) Scalability: We’re proven at scale (we send over 30 billion emails per month) and are trusted by leading senders like Uber, Airbnb, and Spotify Deliverability: We offer domain whitelisting, compliance coaching, and proactive ISP outreach to ensure our customers are empowered to achieve optimal deliverability Full team enablement: Our proven APIs and marketer-friendly sending tools are tailored to our customers’ unique selling needs, all on one platform to deliver on the email goals of their whole team _______ As a developer, we know you have a lot on your plate and you need an email solution that just works. With SendGrid, you can trust our customizable APIs and insightful interface to help you get the job done. • Integrate and accomplish your goals quickly and easily in your preferred code language • Make smarter decisions with real-time data and analytics • Benefit from our ongoing compliance, MTA, and security advances Learn more at: sendgrid.com/solutions/sendgrid-api/ _______ As a marketer, you need to use email to build strong customer relationships and grow your business. The SendGrid platform acts as an extension of your team, helping you achieve — and prove — success to become an email hero. • Get more done with flexible workflows and an intuitive interface • Know what works with actionable analytics and smart testing tools • Rely on support when you need it from our deep bench of email experts Learn more at: sendgrid.com/solutions/sendgrid-campaigns _______ Whether you’re a developer or a marketer, you can benefit by optimizing your email sending and delivery. SendGrid Expert Services helps ensure your program is optimized, regardless of whether you are a new customer, a veteran whose business is evolving, or if your email program is experiencing some inbox challenges. • Continually evaluate your sending practices, inbox delivery rates, IP and whitelabel setup, email authentication, and more in our Managed Services offering • Resolve current email delivery challenges and build a plan for improvement with our Delivery Consulting Services • Ensure your account is setup properly with our onboarding services for new senders Learn more at: sendgrid.com/solutions/expert-services


    A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java. Easy SMTP integration and a simple, RESTful API abstracts away the messy details of sending transactional or bulk email. Scale quickly, whether you need to send 10 or 10 million emails. Searchable logs mean you always know what is happening to your email while tags make it easy to A/B test and report on your data, all via our webhooks.


    SparkPost is the world’s #1 email infrastructure provider and the most performant email delivery service available. Our customers send over 3 trillion messages a year, more than 25 percent of the world’s non-spam email. Several SparkPost customers—including the largest social networks—send over a billion emails a day, making us the fastest-growing email delivery service provider on the market. For more than a decade, we’ve developed the leading technology in the email industry and the first email delivery service truly architected for the cloud. From the finely-tuned Momentum MTA to today’s fully elastic cloud email delivery service, we provide our customers with proven highest inbox delivery rates, easy setup and launch, and the most comprehensive analytics and insight. Built on the AWS platform, we give our customers the reliability and scalability they demand—and more. There’s never been a better way to send email. Our technology is powerful, but SparkPost’s most valuable asset is our people—the most talented and experienced email experts in the industry. From deliverability experts to a community of developers to dedicated Technical Account Managers for enterprise customers, our team is there with you every step of the way. Whether you are just starting out building an app; a large, complex enterprise; or somewhere in between, there’s a SparkPost service to match your email delivery needs.


    Elastic Email is an all-in-one email delivery platform. We offer an SMTP Relay, robust HTTP API, and a User Interface that has a complete suite of tools and features for managing contacts, templates, campaigns, and reports. We specialize in delivering transactional and marketing email.


    Mandrill is an affordable, scalable, and secure email infrastructure service that's easy to set up and integrate with existing apps. And we're really fast, too. With servers all over the world, we can deliver your email in milliseconds. Our detailed delivery reports, real-time analytics, and friendly interface mean your entire team—from developers to marketers—can easily monitor and evaluate email performance.


    SendinBlue empowers businesses to build and grow relationships through automation, marketing and transactional emails, and SMS messages. Over 50,000 customers around the world choose SendinBlue because we offer competitive pricing, active customer support, and an all-in-one solution for marketing automation, email marketing, SMS marketing, and sending transactional messages via email and SMS. Many leading apps, ecommerce platforms, and CMS tools integrate directly with SendinBlue including: WordPress, Magento, Drupal, Shopify, PrestaShop, WooCommerce, Zapier, OptinMonster, and more. Our robust API also gives you the power to create custom integrations via a variety of popular programming languages. SendinBlue pricing is based on the number of email messages sent, rather than the number of contacts you keep in your account. SendinBlue offers free accounts that allow you to send up to 300 emails per day (9,000 emails per month) 100% free. As your business grows, you can upgrade to a plan that meets your needs without breaking the bank. Send up to 40,000 emails per month for just $25 -- or send even more emails at great prices. Learn more about our paid plans, pay-as-you-go options and pricing for SMS credits here: www.sendinblue.com/pricing.


    A fast and scalable email service provider, for sending transactional and marketing emails and viewing reports on email delivery. Complexities such as reputation monitoring and DKIM are professionally managed for each customer. Native-English speaking support is available worldwide (agents in the USA, UK, Australia, and New Zealand). Servers are also located around the world, meaning fast connection speeds and network redundancy.


    Pepipost is a cloud based transactional email delivery service helping businesses send their important emails like notifications, newsletters, updates, etc. Everyone loves Pepipost because it focuses on what matters: deliverability, pricing, and good analytics. Our highly scalable platform is capable of delivering billions of emails every hour with best inbox rates. Easy integration and disruptive pricing model makes Pepipost the ideal email delivery partner for both burgeoning startups and industry bigwigs. You can choose between SMTP or HTTP API. Pepipost has been rated as #1 Transactional Email Software for Small Business.


    Mailjet is a powerful email service provider that ensures maximum insight and deliverability results for marketing and transactional emails. Founded in France in 2010, we serve more than 100,000 clients worldwide in 156 countries, sending billions emails every month. Our analytics tools and intelligent APIs offer the flexibility to create, send and optimize email for all. Mailjet’s propriatary technology and consulting services ensure optimal deliverability for its customers. We continue to develop innovative features such as A/B testing and advanced user management to help our customers get more out of their email. Our support team works around the clock to answer questions and resolve customer issues in English, French, German and Spanish. For more information, please visit www.mailjet.com


    Customer.io is a behavioral messaging platform that uses your app's data to automate hyper-personalized customer messages at scale. You can harness your customer's behavioral data and use advanced segmentation across web and mobile channels to empower your marketing and product teams to automate targeted, contextually-relevant messages. Customer.io helps you optimize your customers' experience while driving retention and conversion. By taking the first step toward incredibly authentic customer experiences, you're helping us transform customer marketing along with high-growth online brands.


    Postmark is an email service provider focused exclusively on transactional email delivery. By not allowing bulk promotional email, Postmark maintains one of the best delivery reputations in the industry. With Postmark, all customers receive stellar support and incredibly delivery at no added cost. You'll never have to pay extra for a dedicated IP address or personalized support. It's just part of the deal.


    MessageGears enables the world’s top brands to send dynamic, high-volume marketing messages with speed and precision by providing a platform that overcomes the inherent limitations of marketing cloud email systems.


    Email is what we do. Making sure your message gets delivered is our top priority. Here at SocketLabs, we’ve perfected the art and science of easy, reliable delivery for your emails. Regardless of the size or nature of your business, we have a plan that will meet all of your email needs. You want simplicity? Well, we’ve struck just the right balance between a feature-rich outgoing mail server delivery solution, an easy-to-use dashboard interface, and an even easier setup. You can be set up and running in minutes. Outgoing mail servers, advanced analytics, and top notch customer support are all part of the SocketLabs experience. Our products and services insure that you can: - Use our outgoing mail servers to avoid the spam filter - Gain greater insight into how your email is performing - Rely on knowledgeable staff to resolve issues - Save money by using our reliable infrastructure - Capture and store email in a secure database With over 15 years of experience, we know how to get emails delivered right – and reliably – each and every time. Our proven strategies and outgoing mail server technology help you send marketing, transactional, or person-to-person emails with ease.


    MailUp is the #1 email marketing solution in Italy. The platform combines advanced features with an industry-leading flat-rate Pay per Speed pricing, helping you reach your targeted audience. In a few clicks you can create, send and track your email marketing campaigns with the editor drag&drop BEE. The platform has a wide range of free web services with which to link external databases, CRMs, CMSs, ecommerce systems, ERPs, web analytics and business intelligence systems. As a Saas solution, you don’t need to install any software and can access MailUp anywhere there’s an internet connection, even on your iPad! MailUp is chosen by SMEs and large companies used for creating, sending and monitoring newsletters, email and texts. With more than 25 billion messages sent each year and over 8,000 clients (direct and indirect), MailUp is the leader in the Italian ESP sector in terms of both the number of emails sent and number of clients 700 vendors, many of whom are located abroad, have chosen to share MailUp's culture of professional and responsible email marketing, nourished by skills, discussion and continuous research. Set up more than 10 years ago in Cremona, MailUp now has offices in Milan and San Francisco through MailUp Inc. MailUp does not sell and does not rent email addresses.


    For your enterprise transactional email and SMTP relay needs.


    SMTP’s relay service infrastructure can solve your delivery issues — quickly. We maximize the number of emails that reach recipients’ inboxes by using our own IP addresses and monitoring your emails for anti-SPAM compliance. By improving your deliverability you’ll see improved ROI. Engagement rates will increase and you can use your resources more efficiently - to get the highest return on every marketing dollar you spend. To ensure the best deliverability, our Responsive Delivery system constantly monitors bounce rates and adjusts the parameters of your email delivery to ensure that your bounce and complaint rates stay at a minimum. SMTP’s relay services are as easy to use as they are effective. Our cloud-based service for email delivery enables you to easily begin using the service without the need for additional hardware or software.You control all aspects of your sending and can review your campaign statistics through your dashboard. With SMTP's Relay Services, you get: -Superior deliverability: Our experts closely examine your unique needs and serve as your guide and “interpreter” for ISPs that may be blocking your delivery. -FREE 24/7 support: You have unlimited access to phone, chat and email support, and a dedicated team of specialists will work to ensure all your service needs are met. -No contract: You can sign up month to month and try out our service. Our terms are highly flexible, so you can downgrade or upgrade your account anytime at no risk. Relay Service Features: -White-listed IP addresses -Email authentication -Proactive monitoring systems -ISP feedback loops -Shared or dedicated IP addresses -Email delivery rates consistently in the 90th percentile -Robust analytics and reporting -Email delivery statistics, including bounce rates & delivery confirmation -Flexible API: Integration for IT and Developers SMTP’s cloud-based service also includes an SMTP API, enabling IT professionals and developers to easily integrate web applications based upon the cloud platforms.


    Doppler Relay is a transactional email service, that guarantees the arrival of your Transactional Emails and allows you to access detailed analytics in real time. Sending attached files, invoices, card statements and password resets has never been so easy, safe and effective.


    A transactional email delivery service that adds tracking and authentication to email.


    Amazon Simple Notification Service (Amazon SNS) is a push notification service that send individual messages or to fan-out messages to large numbers of recipient to mobile device users, email recipients or even send messages to other distributed services.


    ExpressPigeon is a high-performing, cloud-based marketing, and transactional email automation service. Its clients are provided with a complete and cost-effective solution for list-based, transactional and automated email needs. Users of our system hail the ease and depth of our editor and are able to dive deep into personalization and segmentation to send highly targeted campaigns, which look great across all providers and devices. White-labeled, private IP addresses make messages appear as coming directly from the sender, increasing deliverability, and ensuring reputation.


    Everything you need for powerful email delivery is built in. We've taken care of the difficult details.


    Newsletter & Marketing Component for Joomla


    Ariticmail is an email marketing service provider for business having large subscriber base, and enables you to send email campaigns to a list of opt-in emails.


    Global SMTP and transactional email service through an encrypted service.


    Supercharge your sales process. MailTag is your all-in-one Chome browser extension for email tracking 📨, scheduling 🕔, and auto follow-up 🚀. 100% free, forever. (Available for Gmail & GSuite accounts).


    Rebump is an email productivity tool available as a google chrome extension for Gmail.


    VeContact is designed to convert customers who abandon their transaction during the payment process, bringing them back to your site to complete their purchase.


    Dyspatch by Sendwithus is a powerful communications platform built around advanced email content management. Our platform simplifies transactional email creation with a robust API, an easy to use editor, and built-in device testing, allowing for truly collaborative email strategy and execution. A centralized hub for email creation, approval, and publishing, our cloud-based solution empowers Product, Marketing, CRM, and Loyalty teams to efficiently build and test meaningful, dynamic communications without involving developers or deploying code. And with built-in support for 300+ locales, your teams can seamlessly manage localized content for global communications. Easily connect your cloud email provider or customize your integration to connect to your digital messaging service. Upload your existing templates in minutes. And from there, you’re well on your way to optimizing every email you send.


    LeaderSend is transactional email delivery service for web and mobile apps. LeaderSend takes care of your transactional message delivery, while you can focus on your business instead.


    Mailboxlayer is a free, simple and powerful JSON API offering instant email address validation & verification via syntax checks, typo and spelling checks, SMTP checks, free and disposable provider filtering, and much more. Its system is REST-based, secured by 256-bit HTTPS encryption, and pursuing the goal of assisting developers and businesses in fighting fraudulent users and increasing success rates of email campaigns. Paul Zehetmayr-paul@apilayer.net


    Maildocker is a behavioral and transactional email platform. They serve as your email infrastructure to send and track emails in an easy, fast and efficient way.


    Sarv Transactional Email Service (Sarv TES) is a Pay as uses service with real-time easy access of statistics like open, click, bounce, delivered, complaints by Dashboard & HTTP API with Webhooks method in JSON, XML and POST data structure.


    SMTPProvider is a transactional email and email marketing solutions provider.


    Upaknee is a leading provider of email & SMS communications technology. We offer a robust platform, providing organizations with an easy and intuitive toolset as a means of online communication and engagement with clients, contacts, and supporters. Our specialties include email newsletters, campaigns, subscription centers, widgets, forms, SMS notifications, and more.


    Kate from G2 Crowd

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