Mailgun
Transactional email API and SMTP service for sending, receiving, tracking, validating, and
Mailgun is an email delivery platform that provides RESTful API and SMTP relay services for sending, receiving, and tracking email. It addresses the infrastructure challenges of transactional and marketing email programs, including deliverability, list hygiene, and quality assurance before campaigns launch. The platform is organized into four product areas: Send, Optimize, Validate, and Inspect.
Send covers the Email API, SMTP relays, email routing for parsing inbound messages, email event webhooks, send time optimization, email protection with TLS encryption, email logs, and email analytics. Optimize provides deliverability tools, while Validate offers a real-time Email Validation API and bulk list upload for cleaning addresses. Inspect provides preview and testing tools drawn from Email on Acid, integrated through APIs. Data centers in the US and EU support global coverage.
Mailgun is aimed at developers and businesses integrating email into applications or running transactional and marketing campaigns, with domain-level isolation for managing multiple sending streams within one account. It offers a free plan with a daily sending allowance, a free trial, and an Enterprise edition for high-volume senders with consulting and SAML authentication. Pricing is available through contact with sales.
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