Legacy Mailbox API 1.0 is deprecated

Support for legacy Mailbox API 1.0 was ended on June 6, 2019. Please use Mailbox API 2.0 going forward. If you have any questions or need help with the new API, please reach out.

Status Codes

Code Description
200 Request succeeded
201 The request to POST or PUT a record was successful. A Location HTTP header is returned
204 The request to DELETE a record was successful
301 The entity exists under a different URI or ID. Occurs when trying to access a conversation that has either been moved or merged. The location header contains the location of the moved entity
400 The request was not formatted correctly
401 Invalid API Key
402 API key suspended
403 Access denied
404 Selected resource was not found (ie. User asked for non-existent item or URL)
405 Invalid method type (GET when you should POST, etc)
409 Resource being created already exists (i.e. a customer with the same email address)
429 Too Many Requests (i.e. throttle limit reached)
500 Application error or server error
503 Service Temporarily Unavailable