(optional) If the Moderated setting is set to all messages or number of messages, defines the amount of time that should elapse before messages held for approval are automatically
For example, if the Release period is set to 1 day, messages held and waiting for approval will be automatically approved at midnight, the day of their contribution. The Release
feature allows the List Administrator to do nothing in the normal course of running their mailing lists. The List Administrator will receive a copy of the message to be approved via email, and if
the message is acceptable, the List Administrator does nothing, and the message is approved that night. On the other hand, if the message is not acceptable, the List Administrator has until midnight
to reject the message.
If the List Administrator does not wish to use a Release period, they can set it to approval is always needed.