Quote a storage upgrade
POST/mail/mailboxes/:mailbox_id/upgrade/quote
Increases storage to a larger active plan. The mailbox must be active and paid. The extra charge is the difference between current monthly prices multiplied by the remaining fraction of each paid calendar month, rounded to four decimal places. paid_until stays unchanged. Storage cannot be reduced. Returns the extra charge without payment.
Request
Responses
- 200
- 401
- 403
- 404
- 409
- 422
- 500
- 503
Successful response
Missing or invalid key, mismatched ID, or inactive integration
Access denied.
Resource not found in this integration.
Resource state, payment, price or idempotency conflict. See the mail guide for error codes.
Invalid request fields or unsupported parameters
Unexpected server error
Mail service or usage data temporarily unavailable.