Update message labels
Adds/removes labels on a message. Add spam to report it as spam or trash to move it to trash; remove the label to undo. Trashed messages are permanently deleted 30 days after they were trashed. Both hide the message, and a thread with nothing else left, from lists and search unless include_spam / include_trash is set. The held label can only be changed by a person in the Crevio inbox.
Authorizations
API key in the format: Bearer {api_token}
Body
Labels to add. Crevio uses unread (new incoming mail), starred and archived (out of the inbox, still listed) like Gmail; spam and trash hide the mail from lists and search until removed. held can't be changed through the API.
Labels to remove. Removing spam or trash brings the mail back.
Response
Updated
inbound, outbound received, queued, sent, delivered, bounced, complained, failed 
