When using the Requeue Messages context menu option, you will receive a screen like this:

The Requeue Messages option, when used at the base Carriers tree, allows you to resend any message previously sent to All Carriers, which sends a message to All Recipients.

If the Reliapage option is enabled for recipients, you can select a range of Reliapage messages to resend.

Also, a date and time range of messages for all carriers can be resent.