Best Email APIs for Enterprise

Critical Impact allows you to amplify and facilitate your email marketing strategies. Our platform allows you to efficiently monitor your email and messaging portfolio, send edited and scheduled emails and text messages (SMS) for your advertising efforts with an affordable pricing structure. Our subscriber assessment technique digs deep into your data to quickly find the subscribers who are most likely to read your next email, receive more emails, or make an additional purchase. With our user-friendly interface, you can schedule the forwarding of your communications in seconds. Choose your sending options on a single page, then avoid errors by viewing the configuration of all your submission details. Even rate your email on display, from phone, tablet to monitor.

Reliable SMTP relay services and email delivery services. You can send and track large volumes of emails with ease using powerful email delivery services. In minutes, integrate and you can start sending. All your email delivery, transactional and email relay needs are covered under one roof. SMTP can deliver whether you need a reliable backend solution or scalable infrastructure to handle large volumes of emails. Reputation Defender, SMTP's proprietary technology, uses big data to proactively monitor and protect your email list health. It also suppresses bad emails from soft and hard bounces in order to protect your IP reputation and domain. This will ensure that your delivery rates and inbox placement gradually improve over time.

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!

SendX is an intuitive, affordable and feature-rich email marketing software for marketers and business owners. SendX prides its self on providing marketers with the most intuitive UIs in industry. SendX offers unlimited email sends with all plans, powerful automation capabilities and 24x7 live support. They also offer the best email delivery. SendX is trusted by more than 3000 companies around the world for their Email Marketing. Pricing: Start with a 14-day free trial (no need to have a credit card). Pricing starting at $9.99/month Key Features & Benefits: Send Unlimited Email Campaigns - Create Your Email List using forms and pop-ups - Powerful Automation Software - Drag and Drop Email Editor (no programming required) - Best of Breed Email Deliveryability (get your emails delivered to the primary inbox). - Free Migration Service: We will migrate your email marketing accounts from any ESP to you for no charge 14-day Free Trial (no credit card needed, instant setup).

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.

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. TurboSMTP offers webhook integrations and automates actions based on email events, streamlining your workflow. Plus, our email validation tools ensure list accuracy, reducing bounce rates and improving deliverability. TurboSMTP not only prioritizes the reliability and efficiency of email delivery but also understands the importance of providing exceptional support to our valued customers. That's why we offer multilingual 24/7 support.

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.

Transactional emails are essential for conveying important information to your users. ZeptoMail stands out as a dependable and secure platform that ensures these vital emails are dispatched without delay. With its rapid delivery and exceptional inbox placement, ZeptoMail eliminates the frustration of customers having to wait for their messages. These emails, typically triggered by user actions, are anticipated by recipients and should ideally arrive in mere seconds. Choosing the right delivery service is key to maintaining customer satisfaction, ensuring that no one is left anxiously refreshing their inbox for verification codes or password resets. The effectiveness of email delivery is closely linked to the sender's IP address reputation, which makes ZeptoMail a robust solution designed specifically for the nuances of transactional email dispatch. Not only does it excel in speed, but it also ensures that emails land in the correct folders, enhancing user experience. Furthermore, ZeptoMail incorporates industry-standard authentication protocols like SPF and DKIM to bolster security and trustworthiness. By prioritizing these features, ZeptoMail empowers businesses to maintain effective communication with their customers.

Multi-channel marketing automation that is truly powerful. Advanced marketing automation, intuitive reporting, and powerful personalization via email and SMS can increase sales and revenue. More than email automation. Create entire customer journeys. Advanced marketing automation, intuitive reporting, and powerful personalization can help you increase sales and revenue. You can grow your audience by creating responsive landing pages and fully customizable forms. There are 100's of integrations available or by using webhooks to your custom web setup. Automated, dynamic content can turn prospects into repeat customers, keep subscribers engaged, and deliver personalized messages at scale to them. Optimize your conversions, track what's generating revenue, who are your top customers, and retain them better with data-driven automation.

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.

Reply.io is an AI-powered sales engagement platform that streamlines cold outreach with multiple mailboxes, turns website visitors into booked meetings with AI Chat, and optimizes your sales process with AI SDRs—covering everything from building lead lists to creating personalized sequences. Trusted by over 3,000 businesses and recognized among G2’s Top 50 Sales Products for 2024, Reply offers: - Cold Outreach Tools: Connect with prospects via emails, LinkedIn, WhatsApp, SMS, calls, and more - all combined in dynamic, conditional branch sequences. - AI SDR Agents: Automate sales outreach to increase meeting bookings. - Reply AI Chat: Engage website visitors and convert them into leads with AI-driven chat and video avatars. - Email Deliverability Suite: Ensure high email deliverability rates with comprehensive email health tools and Mailtoaster.ai. - Agency Growth Hub: Custom solutions for sales and lead generation agencies, featuring integrations, an agency dashboard, and a sales experts marketplace. Reply.io is ideal for small businesses, medium businesses, startups, agencies, and enterprises alike.

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.

Cloud-based platform offering SMS marketing software. It enables businesses to connect, engage and grow customers using a cloud-based portfolio of services including SMS, RCS, Voice, Email, WhatsApp, and Google Verified SMS. It provides solutions to over 400+ enterprises and expands its portfolio to simplify engagement and increase conversions. We enable businesses to connect, engage and grow customers using cloud-based portfolio of services with agile marketing automation solutions. It also provides a marketing automation tool that automates data ingestion, content creation, customer journeys, campaign triggering, and real-time reports.

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.

We assist you in sending emails to legitimate addresses, ensuring you achieve tangible outcomes. With reduced bounce rates and high-quality contacts, you can enjoy a greater return on investment and maintain a pristine online reputation. Our service verifies the format of email addresses and confirms the existence of MX records for the associated domains. Additionally, we identify any misspellings and offer suggestions for corrections. The integration with your website, application, or other services is seamless and straightforward. You won't encounter monthly fees, and with volume discounts and unlimited credit purchasing options, you can manage your resources effectively. Our platform is compatible with leading services such as Google Sheets, Salesforce, Mailchimp, and Campaign Monitor, allowing you to validate your email list effortlessly with just a few clicks. It's truly that simple! Importantly, email addresses submitted for validation through our service, whether via the website or API, are never stored or collected in any form. You can get started with the sift.email API in just a few minutes, making it an efficient choice for your email validation needs. This smooth setup ensures that you can focus on what matters most—growing your business.

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.