Insert message (upload)
documentedInserts a message into only this user's mailbox via the upload endpoint.
POST /upload/gmail/v1/users/{userId}/messagesUsersno implementation yet0 runsInput
user_id*
Gmail userId (usually 'me' for authenticated user)
{{$user_id}}
boundary*
Multipart boundary
{{$boundary}}
raw_email_base64*
Base64-encoded RFC822 email (metadata 'raw' field)
{{$raw_email_base64}}
email_message_rfc822*
Email message in RFC822 format (body of the upload)
{{$email_message_rfc822}}
Calls Gmail as you (your API key is your account); keychains.dev holds the credentials.