Insert message
documentedDirectly inserts a message into only this user's mailbox (bypassing most scanning).
POST /gmail/v1/users/{userId}/messagesUsersno implementation yet0 runsInput
user_id
User ID (use 'me' to indicate the authenticated user)
me or user@example.com
raw_message*
Base64URL-encoded raw email string
BASE64URL_ENCODED_EMAIL
Calls Gmail as you (your API key is your account); keychains.dev holds the credentials.