Connected sending accounts by channel

The connected sending accounts for one channel. channel=email lists the mailboxes the token owner owns or has shared with them: id is the email address (use it as a campaign sender), provider is gmail, outlook or smtp, and needsReauthAt/needsReauthReason are set when the provider invalidated the connection. channel=linkedin lists the owner's LinkedIn seats: id is the LinkedIn account id accepted by linkedin_sender_account_ids, type is the LinkedIn plan (classic or a premium variant). Available to any valid key (no scope needed). Rate limit: 120 requests per minute, 10000 per day.

Errors:

• 422 VALIDATION_FAILED — channel is missing (it is required) or is not email or linkedin.
• 429 RATE_LIMITED — Per-user quota for this endpoint family exceeded (120 per minute, 10000 per day); retry after the Retry-After / RateLimit-Reset seconds.