SunnyBox is an email-processing API for developers connecting mailbox activity to applications. It handles protocol details such as IMAP, MIME and character encodings, returning email data through a JSON:API interface. Applications can connect accounts, process incoming messages and send replies without implementing each mailbox protocol detail themselves.
The platform also offers incoming-message webhooks, grouping connected accounts into streams that forward events to a configured endpoint. The site provides OpenAPI documentation and describes use cases such as CRM updates, support routing and content analysis. Its FAQ says encrypted IMAP credentials are stored for mailbox access, so adopters should review the security and retention terms for their own use case. An API connection is a technical capability, not permission to read or send a person's email without authorization.
