hold for delivery
Computing term for temporarily suspending the sending of data, such as emails or messages, until a later time or manual release.
A hold for delivery is occurring on the mail server.
Please cancel the hold-for-delivery setting.
General term for putting something on hold; 配信保留 specifically refers to holding delivery of data.
Delivery or distribution of data; 配信保留 is the state of that delivery being held.
Compound of 配信 (delivery, distribution) and 保留 (hold, suspension). The exact historical derivation is uncertain, but the term is used in modern computing contexts.