Here are all the API methods and the status on their implementation.
Methods that need to be implemented are emphasized.
oauth_providers
(GET, POST)oauth_providers/<key>
(GET, DELETE)discovery
(GET)connect_tokens
(GET, POST)connect_tokens/<token>
(GET, DELETE)accounts
(GET, POST)accounts/<id>
(GET, POST, DELETE, PUT)connect_tokens
(GET, POST)connect_tokens/<token>
(GET, DELETE)contacts
(GET)contacts/<email>
(GET)files
(GET)messages
(GET)threads
(GET)
email_addresses
(GET, POST)email_addresses/<email>
(POST, DELETE)files
(GET)files/<file_id>
(GET)changes
(GET)content
(GET)related
(GET)revisions
(GET)
messages
(GET, POST)messages/<message_id>
(GET, POST)body
(GET)source
(GET)flags
(GET, POST)folders
(GET, POST)headers
(GET)thread
(GET)
sources
(GET, POST)sources/<label>
(GET, POST, DELETE, PUT)folders
(GET)folders/<folder>
(GET, PUT)messages
(GET)
sync
(GET, POST)
sync
(GET, POST)threads
(GET)threads/<thread_id>
(GET)webhooks
(GET, POST)webhooks/<webhook_id>
(GET, POST, DELETE)