Email & messaging APIs
Transactional email, SMS and notification APIs.
78 products
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An email and marketing automation platform for growing businesses.
Free plan
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Customer engagement platform for email, push, SMS and in-app messaging
Free plan
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Conversational AI and APIs for SMS, voice, and email
Free plan
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DNS, remote access, email and hosting services to keep systems reachable
Free plan
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Email delivery service with SMTP and API sending, worldwide servers, and delivery reports.
Free plan
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An email platform for developers to send transactional mail.
Free plan
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The email delivery service that people actually like
Free plan
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Transactional email API and SMTP service for sending, receiving, tracking, validating, and
Free plan
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The data layer behind every communication workflow, human or AI
Free plan
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Email marketing campaign service for businesses.
Free plan
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Test, transform and automate Web requests and emails
Free plan
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Email inbox API for AI agents.
Free plan
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Email API for developers: send and receive email from your app or agent
Free plan
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The customer messaging platform for humans and AI agents.
Free plan
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Modern email communication platform for growing businesses
Free plan
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Modern Email Delivery for developer & product teams
Free plan
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Unlimited private email aliases that forward to your existing inbox
Free plan
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HIPAA compliant email security for healthcare organizations.
Free plan
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Forward emails easily.
Free plan
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SMTP relay and email API for transactional and marketing email
Free plan
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Bulk SMS, OTP, WhatsApp API & RCS from one DLT-compliant platform
Free plan
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Free, Open Source Mail Server Solution
Free planOpen source
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Team-friendly email API for modern apps
Free plan
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Anonymous E-Mail In Seconds
Free planOpen source
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Professional SMTP service for transactional and newsletter email delivery
Free plan
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iMessage for Business โ send iMessage, SMS, and RCS from your CRM or via REST API
Free plan
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Marketing platform built to drive results
Free plan
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SMS, WhatsApp, voice and verification messaging for businesses.
Free plan
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Disposable email service for anonymous registrations
Free plan
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Transactional email delivery service with API and SMTP integration for transactional and่ฅ้
Free plan
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Email infrastructure for organizations the incumbents won't engage with
Free plan
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SMS solution for business software and web applications
Free plan
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Global messaging platform with an SMS gateway for sending and receiving messages worldwide
Free plan
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WinGate Proxy Server. Web proxy for Windows.
Free plan
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Email deliverability and marketing tools to test, validate, and optimize email campaigns.
Free plan
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Free JSON API to check the spam score of email messages
Free plan
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Official imapsync migration tool (release 2.314)
Free plan
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Free, open-source hosting control panel for Linux servers with web, mail, DNS, and FTP.
Free planOpen source
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Email verification platform that checks addresses and returns one of 13 verdicts before a
Free plan
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Incoming email for web apps, receive email via HTTP Post in the Cloud
Free plan
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High Performance Mail Transfer Agent (MTA) Solution
Free plan
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The business email operating system
Free plan
E
High Accuracy Email Verification Service & Bulk Verifier
Free plan
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B2B phone and email finder for direct mobile numbers and verified emails.
Free plan
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Simple Email Automation, Routing and Parsing.
Free plan
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BTK-licensed corporate messaging platform based in Turkey.
Free plan
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Bulk and business SMS for New Zealand.
Free plan
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Email Infrastructure for Modern Product Teams
Free plan
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Seamless API integration for WhatsApp, Telegram and other popular messengers
Free plan
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The easiest way for Norwegian businesses to send SMS
Free plan
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Transactional email and outbound filtering for platforms with thousands of senders. Trust
Free plan
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The Email Platform Built for SaaS
Free plan
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Your European partner for transactional emails that arrive.
Free plan
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Email service provider for product teams to send transactional emails and newsletters
Free plan
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Developer-first email API that processes and delivers messages without storing recipient P
Free plan
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Email API & Email Marketing Platform
Free plan
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Omnichannel mass communication platform (SMS, WhatsApp, voice calls, URL shortener).
Free plan
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Push notifications made simple.
Free plan
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SMS gateway for businesses, associations, and organizations with API integrations.
Free plan
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Template-based tool for generating images, PDFs, and videos from data.
Free plan
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WhatsApp API for developers
Free plan
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Email delivery platform for transactional and marketing email.
Free plan
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Denmark's most stable and easiest SMS gateway
Free plan
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Cloud SMTP server that forwards incoming emails to your inbox, webhooks, or Zapier
Free plan
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X-Email Verify: Verify before sending to increase email deliverability.
Free plan
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AI-powered spam detection and prevention API for free-form JSON content.
Free plan
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SMS sending to 190 countries with web sender, API integration and two-way SMS.
Free plan
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Email API for sending transactional emails with a visual template builder
Free planOpen source
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The open-source platform for everything user
Free planOpen source
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email for AI agents
Free plan
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DNS Checker, Free DNS, IP & Network Intelligence Tools
Free plan
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Turn Your Phone Into an SMS Gateway
Free plan
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Website, API, port, and cron job monitoring with hosted status pages.
Free plan
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Transactional and broadcast email through a simple API, at a fraction of legacy email-API
Free plan
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Email API for AI agents
Free plan
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Unified marketing automation, sales pipeline CRM, mail, and desk.
Free plan
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Email verification service from $0.0008/email with credits that never expire.
Free plan
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Verify email addresses in real-time โ check deliverability and detect disposable addresses
Free plan