Best Free Email APIs of 2025

Brevo (formerly Sendinblue), the platform that helps build customer relationships through Email, SMS, Chat and more. The complete toolkit for converting one-time browsers to long-term customers. Beautifully designed email campaigns allow you to connect with contacts in their inbox. Send targeted messages to your customers. Brevo helps businesses build and grow relationships by automating marketing campaigns, transactional email and SMS messages. What makes Brevo different? Brevo is powered our world-class team of customer happiness experts and we offer pricing that will make you smile. Our platform offers a comprehensive suite of services in a single, easy-to-use solution. Happy Sending!

Partner with the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. The Twilio SendGrid 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. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale, while maximizing inbox placement and protecting your reputation as a trusted sender. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.

Discover the email solution tailored for dynamic teams seeking efficiency. We understand the challenges of finding an affordable yet effective email service, and Mailjet emerges as the ideal choice for your requirements. Our cutting-edge features empower your business growth while remaining budget-friendly. With our user-friendly email editor, Passport, you can effortlessly design stunning, responsive emails in just a few clicks. Choose from our extensive collection of free email templates or unleash your creativity by designing from scratch. Enhance teamwork with Mailjet’s Collaboration Toolkit, allowing real-time collaboration on the same email template or campaign, thus boosting your team's productivity. Significantly reduce feedback loops with our commenting and approval workflow, enabling quicker turnaround times. Tailor each email using the customer data you gather and segment your contact list to ensure the right content reaches the appropriate audience. It’s simple to make every recipient feel valued and recognized. Furthermore, analyze the effectiveness of your campaigns with real-time statistics provided for each sending, helping you refine your strategies for even better results. With Mailjet, achieving email marketing success becomes not only possible but also straightforward.

Thousands of businesses are already utilizing Elastic Email for their email communications. This exceptional Email Marketing platform is designed on an extremely economical Email API. Factors such as deliverability, reliability, and scalability are crucial for success. You can effortlessly connect and dispatch your emails using our HTTP API or SMTP relay, accommodating growth to over 100 million emails each month on our high-speed global infrastructure. Each campaign allows you to foster stronger connections with your audience. Elastic Email equips you with all the necessary marketing tools to ensure your contacts feel engaged. Make the most of your email marketing efforts by crafting stunning emails, distributing newsletters, and automating your campaigns with remarkable speed, enhancing both efficiency and effectiveness. Furthermore, this platform prioritizes user experience, making it simple to implement and manage your email strategies.

Mailmodo is an email marketing platform that allows users to create and send interactive emails in the app-like style to increase email conversions. This eliminates the need for user redirections and allows users to have a smoother experience with their email. Mailmodo's email marketing software also includes: -email automation -user journey creation -Auto-trigger Schedule, and Integration of -API within the email content It offers users a drag-and-drop, code-free email editor and a rich collection AMP Email templates to suit all use cases. It can be integrated into many marketing tools and CRMs such as HubSpot, WebHooks and Calendly. Mailmodo's mission aims to simplify email marketing and increase conversions for businesses. Mailmodo helps its growing clientele get 3x more email conversions and provides a unique email experience for its users.

Multi-channel marketing automation platform that allows marketers to create personalized promotional campaigns. You can choose from SMS, email, or web push notification. Or you can combine multiple channels into one campaign to create a complex message sequence. The platform offers all the tools necessary to automate email marketing. You can also create subscription forms and grow your mailing list. Drag and drop is intuitive and allows users to create mobile-friendly email templates. Or, they can choose from a large gallery of predesigned templates. The company also offers a transactional email service, which allows users to send up 12000 emails for free via SMTP and API. SendPulse offers its own chatbot creator. You can create a Telegram chatbot or a Facebook Messenger chatbot to send personalized messages or as an autoresponder.

Mailgun offers a robust email automation platform tailored for developers. By utilizing Mailgun, users can leverage a comprehensive cloud-based email service designed for sending, receiving, and monitoring emails generated through their applications and websites. The platform is compatible with a variety of programming languages such as Python, Ruby, PHP, Java, and C#. Additionally, Mailgun's tracking capability enables users to monitor all outgoing emails effectively, helping to minimize the likelihood of being classified as spam. This functionality not only enhances email deliverability but also provides valuable insights into user engagement.

We understand that time is your most valuable resource. It shouldn't be wasted on complicated email platforms. Benchmark Email makes it easy to access the tools you need so you can focus on building relationships, growing your business, and raising the bar. Your growing audience is your most valuable marketing asset. Use it more efficiently. Benchmark is free to try and discover how easy it can be to do effective email marketing. Benchmark offers a range of tools that will help you keep up with your drive, such as contact management. Benchmark Pro is the best upgrade to take full advantage of its capabilities. You'll be amazed at how much your company can benefit from the right tools.

Bird, previously known as MessageBird, stands as a cutting-edge CRM tailored for Marketing, Sales, and Payments, facilitating over 5 trillion messages annually through platforms like Email, SMS, and WhatsApp. Notable brands enhance their growth efficiently with Bird by engaging in personalized communication via these channels. Innovative enterprises across the globe leverage Bird's diverse applications and APIs to craft effective communication solutions. Begin your journey today and engage with your customers across any channel, addressing a wide array of use cases globally. Whether it's marketing communications, push notifications, or updates on orders and deliveries, Bird has you covered. Are operational hurdles hindering your expansion? Streamline your processes with automated conversations and workflows that gather essential information early, minimize manual efforts, establish self-service options, and direct chats to the appropriate representative. You can quickly set up and start utilizing our dependable, auto-scaling APIs, supported by comprehensive documentation, detailed API references, and user-friendly SDKs, enabling seamless integration into your existing systems.

EmailLabs is a cloud-based email API and SMTP service designed to send transactional and marketing emails. The unique know-how and partnership between well-know Inbox Service Providers ensure all emails sent from our servers being tailored to the requirements of foreign providers like: Gmail, Yahoo or Hotmail as well as local ISPs such as WP.pl, Onet.pl, Seznam.cz, Web.de, Seznam.cz or Libero.it. We take care of overall deliverability to make sure your messages land in customers’ inboxes, promotions or Offers tab. EmailLabs platform can be easily integrated with any email system or application that allows you to add a third party SMTP server. The whole setup process takes only 5 minutes.

MailerSend is a transactional messaging service designed for developers to work faster and smarter. Intuitively designed so anyone can contribute to transactional email and SMS, while powerful infrastructure and flexible payment plans let you scale quickly. Built by deliverability experts to ensure your messages get delivered, plus dedicated IPs available for high-volume senders.

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Sweego is a multichannel notifications SAAS platform. Developers can send transactional, engagement, and CRM messages via various channels, including email, SMS, push notifications, and more. The platform offers APIs, webhook and web interface for building template, follow statistics. With Sweego'API, Developers can integrate notifications and messaging capabilities into their applications. Key features include message templates, email authentication, webhooks, sandbox testing, delivrability expertise for emails, scalability, detailed logs, comprehensive statistics...

Reliable delivery of your application emails. ActiveCampaign Postmark delivers your email on time and every time to customers. Customers expect transactional emails to arrive promptly, not later. We monitor our delivery times and share the data with the public. Our knowledgeable support team is always available to assist you, via 1-on-1 calls, webinars or email. Postmark integrates seamlessly into any stack thanks to its API libraries that support almost every programming language.

Amazon Simple Email Service (SES) offers an economical, versatile, and scalable platform for developers to send emails directly from their applications. It's easy to set up Amazon SES to cater to a variety of email requirements, such as transactional messages, marketing campaigns, or mass distribution. The service provides adaptable IP deployment and email authentication features that enhance deliverability and safeguard the sender's reputation, while comprehensive analytics allow for the evaluation of each email's effectiveness. With Amazon SES, you can send emails securely and efficiently on a global scale. Configuration can be accomplished swiftly using the Amazon SES console, APIs, or SMTP, allowing you to initiate email dispatch within minutes. Additionally, Amazon SES has functionalities for receiving emails, which facilitates large-scale customer interactions. No matter the purpose or the volume of emails sent, Amazon SES ensures that you only incur charges for what you actually use. This makes it an ideal solution for businesses of all sizes looking to enhance their email communication strategies.

Mailtrap's Email Delivery Platform offers a comprehensive solution for developers to manage, test, and send emails seamlessly from a single location, featuring two main products. With the Email Sandbox, you can safely conduct email tests by capturing messages from your staging environment. It allows you to preview and analyze content for potential spam issues while validating HTML and CSS before delivering emails to recipients’ inboxes. Additionally, you gain enhanced control over your email deliverability through a robust Email API/SMTP. Your essential data is stored in Email Logs for a duration of 60 days, and we provide vital daily and weekly deliverability alerts. You can analyze segment stats across major mailbox providers, such as Office 365 and Google, to identify and resolve early-stage deliverability challenges, ensuring a smoother email communication experience. This platform not only simplifies the email process but also empowers developers to optimize their email strategies effectively.

We are a group of passionate engineers dedicated to creating tools specifically designed for fellow engineers. Our mission is to develop the ideal email platform that we've always dreamed of — one that operates seamlessly and efficiently. You can receive instant notifications directly to your server, informing you whenever an email is delivered, opened, bounced, or a link is clicked. Furthermore, you can simulate events and test our API safely, eliminating the possibility of unintentionally sending genuine emails to actual recipients. In addition, our platform is supported by reputable IPs used by reliable senders, ensuring a balanced workload across various IP pools. Enjoy the benefits of a fully managed dedicated IP that not only warms up automatically but also scales according to your sending volume, all without any waiting periods. With our service, you can focus on what matters most: building and innovating without the headaches of traditional email systems.

Track delivery, clicks and bounce rates in real-time. Welcome to the lightning-fast delivery of transactional emails. Create beautiful, responsive emails with our drag-and drop email template builder in minutes. Supercharge your emailing abilities with our fully-warm-up dedicated IP address. Receive real-time notifications regarding email events. Use our webhooks for tracking email delivery, bounces and more. Get detailed, real-time reports on emails sent and opened. Using valuable insights, you can enhance your user's experience. Manage bounced emails with ease while ensuring that recipients who received the emails are not contacted again. Use our email API or the traditional SMTP to send emails via HTTP requests. Our email API integrates seamlessly with your website or app to ensure that your emails are delivered directly to your inbox.

With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is a global leader in omnichannel communication. We make it our business to simplify how brands connect with, engage and delight their customers at global scale. Our programmable communications platform delivers a suite of tools for advanced customer engagement and support, plus security and authentication. We make this available to you across the widest range of communication channels possible. THE INFOBIP ADVANTAGE (1) Personalized omnichannel customer connections Achieve deeper customer engagement across the widest selection of local and global channels, including: SMS, RCS, WhatsApp, voice, video, email and the most popular chat apps. (2) Global reach, local presence Our 60+ offices around the world allow us to react faster. We provide 24/7 customer support, technical solutions in-line with needs and local requirements — based on proven best practices. (3) Full stack customer engagement Deliver better outcomes for your business by enhancing your communications with fully integrated contact center, marketing automation, and chatbot building solutions informed by our customer data platform.

Mail360 serves as a robust email API platform designed to equip your application with comprehensive email functionalities, eliminating the need for you to develop these features independently. You can either link to an existing mailbox from a different email service or utilize our platform to host your users' inboxes, all powered by a singular email API that streamlines your application's email operations. Enjoy the benefits of secure and dependable two-way email synchronization across various providers in real-time, allowing you to sync, send, and receive emails from any location with just one integrated API. This universal email API empowers you to craft tailored email workflows for your application according to your specific requirements. Take your platform a step further by not only connecting with other email providers but also by hosting your application's mailbox, thereby seamlessly integrating it into your workflow without reliance on third-party services. With Mail360, enhance your application's communication capabilities and ensure a more efficient email management experience.

EmailIt is a multi-functional email sending service designed for both marketers and developers. It provides adaptable sending options via SMTP integration and a REST API, facilitating smooth incorporation with current applications and software. The platform emphasizes email deliverability with an extensive setup for sending domains, which includes the implementation of DKIM, SPF, and DMARC. Users can effectively oversee their audiences, create segments, and execute targeted campaigns with ease. emailit.com features an intuitive campaign builder and a comprehensive template library. In addition to real-time analytics and drip campaigns, it also includes built-in compliance tools to ensure users have all the resources necessary for successful email marketing endeavors. Whether your goal is to meaningfully engage your audience or to seamlessly integrate powerful email capabilities into your applications, EmailIt stands out as a robust solution for all your email sending requirements. With its focus on user experience and deliverability, it truly aims to enhance the email marketing landscape.

Billions of people. Trillions of connections. One API. The Nylas APIs are powering applications with email, calendar and contacts that sync from any inbox around the globe. Nylas is the only company that provides an API for all email, calendar and contacts integrations. Contact records can be updated with missing information. A connection graph can make intros more warm. To create a single data source, combine data from each address book.

Bluefox.email is an efficient solution tailored for SaaS businesses to create visually appealing and uniform transactional, triggered, and marketing emails while leveraging AWS SES for optimal deliverability. By utilizing pre-designed templates, your emails will display flawlessly on every device, including Outlook, providing a seamless user experience. This platform addresses frequent challenges such as design inconsistencies, rendering issues, and the risk of landing in spam folders, guaranteeing that your messages successfully reach their intended recipients. Users can take advantage of straightforward and reasonable pricing options: $100 annually or a complimentary plan featuring Bluefox branding. With the integration of AWS SES, the service offers an economical and reliable way to send emails without the worry of being marked as spam. Ultimately, Bluefox.email empowers businesses to enhance their email communication strategies effortlessly.