Glossary

ProgrammableWeb's glossary of API and other technology terms and defination
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Email API

An email API grants access to an email platform's functionality, such as composing and sending emails. An email API integration aids marketing applications that require sending thousands of emails or tracking performances of email campaigns. Email APIs such as Sendgrid or Mailgun can be used to program mass amounts of marketing emails. However, the real benefit of using an email API lies in transaction emailing. Transactional email is different from normal email in that it is an automated message triggered by user interaction. Transactional email is triggered by events, such as signing up for a newsletter, viewing a product, or sending a support request. Many companies utilize automated transactional email, via APIs, to keep in touch with their users.