The Nylas Email Curl Sample Code demonstrates how to access the API to implement email capabilities including reading data from emails, organizing email inboxes, and updating unread and starred status of email messages.
The Streak API integrates its client relationship management (CRM) platform into other applications like MailChimps and Wufoo. The API's webpage reveals that it requires an API key and uses HTTP Basic Auth. The request format supports Create, retrieve, update, and delete (CRUD) with response in JSON. The purpose of the API is to manage CRM relationships through your application.
Rpost made its name in the compliance space through its Rpost API and core products: email proof, privacy, and electronic signatures. Rpost’s core offering won a customer list full of household names across many industries, both public and private (Whole Foods, AT&T, and Civpol to name a few). Rpost now aims to bring its compliance strategy to all internet transactions via RPost Cloud.