post
https://app.mailivery.io/api/v1/campaigns/google-oauth
Create a Gmail / Google Workspace campaign using the OAuth refresh-token flow (XOAUTH2).
Invite-only. Contact support to enable access. Returns 403 GOOGLE_OAUTH_NOT_ENABLED if your account is not enrolled.
The partner performs the Google OAuth consent flow and supplies Mailivery with a long-lived google_refresh_token plus an initial google_token. Partners do not need to push fresh access tokens over the lifetime of the campaign. The Google scope must be the full https://mail.google.com/ scope; narrower scopes are not sufficient for IMAP XOAUTH2.