Update Billing Settings

Monthly SMS+voice overage spend limit in cents. Omit to leave unchanged; null clears the limit; 0 blocks all overage-incurring sends and calls.

Set true to remove the 'Sent via Inkbox' footer from outbound emails (paid plans only; 403 on Free). Omit or null to leave unchanged.

Monthly SMS+voice overage spend limit in cents; None = no limit. Once cycle-to-date overage spend reaches it, overage-incurring sends and calls are refused (402) until the cycle resets or the limit is raised. Usage within included allowances is never blocked; inbound and in-flight usage can exceed the limit slightly.

When true and the organization is on a paid plan, outbound emails omit the 'Sent via Inkbox' footer. Takes effect only while the organization is on a paid plan; on the Free plan the footer always applies.