Best Email APIs
View:
What are Email APIs?
Email APIs allow users to incorporate functionality related to email into their applications. Generally, users can send automated email messages, fetch user data from emails, and store user actions with an API. These APIs are often easy to set up and integrate into a client's application. They also provide a secure layer of encryption between the email server and the application. Compare and read user reviews of the best Email APIs currently available using the table below. This list is updated regularly.
-
1
Critical Impact
Critical Impact
Critical Impact allows you to enhance and simplify your email marketing campaigns. Our tools let you effectively manage your email and SMS lists, send personalized and automated emails, along with text messages (SMS) for your marketing campaigns all at a competitive price model. Our subscriber scoring algorithms will mine your data to quickly identify those subscribers who are most likely to read your next email, consume additional emails, or make another purchase. With our easy-to-use interface, you can schedule messages to send in minutes. Select your send options all on one page, and then prevent mistakes by seeing a confirmation of all your send details. Even A/B test your email across device screens – from phones to tablets to monitors. -
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
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
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 -
5
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 -
6
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 -
7
ZeptoMail
Zoho
Your transactional emails carry crucial information. ZeptoMail is a reliable and secure service that delivers these all-important emails instantly. With high-speed delivery and great inbox placement, ZeptoMail means you no longer keep your customers waiting. Transactional emails are unique emails that are usually triggered by some user action. More often than not, your customers are expecting these emails in their inbox within seconds of the trigger action. Pick the right delivery service and keep your customers happy. Your users will no longer be left refreshing their inbox for their email verification code or password reset emails. Email deliverability is a consequence of the reputation of the sender IP address. ZeptoMail is built exclusively to tackle the challenges of sending transactional emails. Delivery is good. Delivering to the right folder is crucial. ZeptoMail supports industry-standard authentication mechanisms such as SPF and DKIM.Starting Price: $2 per credit -
8
Campaigner
j2 Global
Seriously powerful multi-channel marketing automation. Drive sales and revenue using advanced marketing automation, intuitive reporting and powerful personalization through email and SMS. Way more than email automation. Create entire customer journeys. Drive sales and revenue using advanced marketing automation, intuitive reporting and powerful personalization. Grow your audience with responsive landing pages, fully customizable forms, through 100's of integrations or using webhooks from your custom web setup. Turn prospects into repeat buyers, keep your subscribers engaged and deliver personalized messages at scale using automated, dynamic content. Optimize your campaigns for conversions, track what is generating revenue, who your best customers are and retain them better through data-driven automation.Starting Price: $19.95 per month -
9
Reply
Reply
Reply.io is an AI-driven sales engagement platform that automates cold outreach through unlimited mailboxes, converts website traffic into booked meetings with AI Chat, and empowers your team to streamline the entire sales process with AI SDRs—from building verified lead lists to crafting personalized sequences and responses. Trusted by over 3,000 businesses and recognized as one of the Top 50 Sales Products for 2024 by G2, Reply offers: - Cold Outreach Tools: Engage prospects through emails, LinkedIn, WhatsApp, SMS, calls, and more - all combined in dynamic, conditional sequences. - AI SDR Agents: Automate outreach to book more meetings. - Reply AI Chat: Capture website visitors and convert them into leads with AI-driven chat and video avatars. - Email Deliverability Suite: Maintain high deliverability rates with email health features and Mailtoaster.ai. - Agency Growth Hub: Tailored solutions for sales and lead generation agencies, including custom integrations, an agStarting Price: $49/user/month -
10
EmailLabs
Vercom
EmailLabs is part of the Vercom S.A Group, which implements technology solutions in the CPaaS model. We are a cloud SMTP server infrastructure: Cloud SMTP & Email API. With years of experience in sending to the most informed senders, we can make a measurable contribution to building email reputation and improving deliverability. We take care of standardization and security of both marketing, transactional and system messages of our customers. Thanks to the in-depth knowledge of our experts, we are able to prepare the infrastructure to ensure appropriate throughput and increase the sending speed for any market and any mailbox provider. Plug EmailLabs into your transactional sends - start sending in less than 5 minutes.Starting Price: Free -
11
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 -
12
Mtalkz
Mtalkz Mobility Services
Mtalkz is a Cloud based platform offering SMS marketing software. It enables businesses to connect, engage and grow customers using cloud based portfolio of services including SMS, RCS, Voice, Email, WhatsApp, Google Verified SMS, and Chatbots 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. It provides solutions to over 400+ enterprises and expands its portfolio to simplify engagement and increase conversions.Starting Price: $0.003 -
13
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 -
14
Authkey
Authkey.io
Authkey is a multi-channel CPaaS platform providing SMS API, WhatsApp Business API, Voice API, Email API, and Google RCS. It helps businesses send notifications, promotional messages, transactional messages, OTPs, 2FA, and more. Designed for responsiveness and ease of use, Authkey allows you to start without adding any credit cards. Authkey offers a free sandbox account for building, testing, and deploying. It supports easy-to-integrate APIs for all channels and over 1,000 automation options via Zapier, Pabbly, Integrately, and other partners. You can easily push bulk campaigns through all channels. WhatsApp Chatbot for intelligent customer query responses. Join over 200 active businesses working with us and grow together.Starting Price: $0 -
15
Sweego
Mindbaz
Sweego is a multichannel notifications platform for developers. Sweego allows users to send transactional, engagement, and CRM messages through channels like email and SMS. We are working to add another channels like push (web & mobile) notifications, in-app notification, voice notifications and more. The platform provides APIs and webhook system to integrate notifications and messaging capabilities into applications. (SAAS, Mobile, Desktop, whatever...) With our email builder, you can create your template easily with drag and drop fonctionnality, HTML import, good email client compatibility, brand management, etc... Key features include message templates, email authentication, webhooks, sandbox testing for emails, statistics, logs and scalability.Starting Price: €10/month -
16
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 -
17
Mailtrap
Railsware
Mailtrap Email Delivery Platform is an end-to-end sending solution for devs to test, send, and control emails in one place, that consists of two products. Use an Email Sandbox for secure email testing. Catch testing emails from staging. Preview and analyze content for spam and validate HTML/CSS before sending emails to recipients' inboxes. Get more control over your email deliverability with a reliable Email API/SMTP. It keeps your hard data under Email Logs for 60 days and we also send critical daily and weekly deliverability alerts. Segment stats by top mailbox providers (including Office 365, Google, and Google Workspace). Catch and fix early-stage deliverability issues.Starting Price: $9.99 per user per month -
18
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 -
19
YCloud
YCloud
YCloud offers an all-in-one solution with best-in-class features at highly competitive and flexible pricing. Providing critical communications infrastructure to help businesses build and scale. Web-based solution to schedule messages with efficiency and freedom. Grab attention and delight customers with personalized marketing campaigns on every channel, no code required. Connect with thousands of apps to automate your work and have more time for what matters most, no code required. Support two-way messaging and maintain a continuous connection with SMSC and guarantee multiple session connectivity and higher throughput. Multi-factor authentication via SMS, voice, WhatsApp, and email. Stay secure and prevent fraud, data breaches, or revenue leakage. Support two-way messaging and maintain a continuous connection with SMSC and guarantee multiple session connectivity and higher throughput. Connect with thousands of apps to automate your work and have more time for what matters most.Starting Price: $0.001 per email -
20
Resend
Resend
We are a team of engineers who love building tools for other engineers. Our goal is to create the email platform we've always wished we had — one that just works. Receive real-time notifications directly to your server. Every time an email is delivered, opened, bounces or a link is clicked. Simulate events and experiment with our API without the risk of accidentally sending real emails to real people. Simulate events and experiment with our API without the risk of accidentally sending real emails to real people. Rely on a platform of reputable IPs used by trustworthy senders with distributed workloads across different IP pools. Get a fully managed dedicated IP that automatically warms up and autoscales based on your sending volume, with no waiting period. Get a fully managed dedicated IP that automatically warms up and autoscales based on your sending volume, with no waiting period.Starting Price: $20 per month -
21
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) -
22
Tarvent
Tarvent
Tarvent makes email marketing and automation easier than ever. We are designed to be the easiest and most intuitive email marketing platform available, offered at a price everyone can afford. Tarvent simplifies advanced automation for marketers at all skill levels, helping businesses automate their processes, with 95% of our customers finding automations invaluable. Customers describe our interface as intuitive and the platform as simple and user-friendly, noting it's a powerful, affordable alternative to others. Our support is second to none, with 99% customer satisfaction, described by users as "great support," "stellar support," and "responsive support". Customers who switched from other platforms found our campaign builder, contact tools, and automation outshine competitors. Choose Tarvent for an intuitive, powerful, and affordable solution for all your email marketing and automation needs.Starting Price: $16/month -
23
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 -
24
MailThis.to
MailThis.to
MailThis.to has a memorable API that doesn't need extensive documentation. You'll remember it when you need it, and you can Google the details. Build your first form in seconds, remember it forever. Spam Filtering, Form customization, and file uploads are all supported. Your first 250 emails are free, then just $5 per thousand emails. Create an alias to avoid exposing your email address to the world. Create a form using HTML, a form builder, or use Javascript to generate POST requests that land in your inbox. Each time your form is submitted, you'll get an email! You'll have to verify the first one, and each visitor will need to verify with reCAPTCHA to prevent spam. Use MailThis.to for up to 250 emails without signing up, completely free. Since 2014, MailThis.to has provided thousands of users with a simple form to mail API, with millions of emails sent. We're looking to handling your mail!Starting Price: $5 per thousand emails -
25
Infobip
Infobip
Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and security. With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is the #1 choice of some of the world's biggest companies to scale their customer communications. We help our clients and partners overcome the complexity of consumer communications, grow their business and enhance customer experience, all in a fast, secure and reliable way. With Infobip, you can achieve deeper customer engagement across the widest selection of local and global channels, including: SMS MMS RCS Live Chat WhatsApp Business Apple Messages for Business Facebook Messenger Instagram Business Telegram Viber Voice / VOIP Video Email -
26
Mailazy
Mailazy
Our mission is to empower customers with a simple email communication platform that delivers without a barrier in a cost-effective way. Mailazy offer fats email delivery, high deliverability, customer support, and prices that won't drain your budget. Our globally distributed cloud infrastructures remove email delivery complications of large-scale email sending. Keep improving your email performance by accessing a wide range of key metrics to learn what works and what needs optimization. Get real-time notifications about events. Simply configure your endpoints, the events you want to track, and the automated response. Mailazy email API is specifically built for developers to provide easy integration and fast email delivery.Starting Price: $ 99 per month -
27
Mail360
Zoho
Mail360 is an email API platform that gives your application full email capabilities without having to build it yourself. Whether you connect to a mailbox hosted with a different email provider or host your user's inbox with us, a single email API can power your application's email workflow. Experience secure and reliable two-way email sync with multiple email providers in real-time. Sync, send, and receive emails from anywhere with just a single email API set. Universal email API that lets you build email workflows for your application, however you see fit. Go beyond simply connecting your application to other email providers. Host your application's mailbox and integrate it with your workflow without depending on other email providers. -
28
EmailIt
FunFirst s.r.o.
EmailIt is a versatile email sending platform catering to both marketers and developers. It offers flexible sending options through SMTP integration and a REST API, ensuring seamless integration with existing applications and software. The platform prioritizes email deliverability with comprehensive sending domain setup, including DKIM, SPF, and DMARC implementation. Users can efficiently manage audiences, create segments, and run targeted campaigns. emailit.com provides a user-friendly campaign builder, template library. With real-time analytics drip campaigns, and built-in compliance tools, emailit.com equips users with everything needed for successful email marketing initiatives. Whether you're looking to engage your audience effectively or integrate robust email functionality into your software, EmailIt offers a powerful solution for your email sending needs.Starting Price: $2 per 10k emails -
29
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 -
30
AWS Communication Developer Services (CDS) are cloud-based APIs and SDKs that help builders add communication capabilities to their apps or websites with minimal coding. Send promotions and marketing messages with top email inbox deliverability and segmented messaging. Build your application or website with scalable video technology that can support telehealth, field support, education, and more. Build an IVR system that can support touch-tone, conversation voice bots, and text-to-speech. Send messages at the right time with automated workflows and event-triggered cross-channel messaging. Determine who received messages with static or dynamic segmented lists.
