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Common technical terms in email

Stay current and expand your email knowledge with our list of common technical terms.


An Application Programming Interface (API) is a programmatic way for applications to communicate with one another. An email API is a specific type of API that allows email developers to integrate their applications with email service providers (ESPs). This lets email developers send and receive emails and take advantage of ESPs’ email analytics and deliverability services from within their own environments.

Another way to send an email is via SMTP. However, email APIs allow developers to better leverage an email service provider’s capabilities at scale. Use Mailgun’s email API to implement our deliverability services and land in your recipient's inbox, while taking advantage of detailed deliverability metrics, and authentication.

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