I'm trying to get a handle on how one might implement a special case of a "whitelist" in JBM. From what I can tell, a whitelist in general could be as easy as a MailListener in the chain. The maillistener either delivers a message to a local user if the sender is on the list, or rejects the message if not on a whitelist.

However, I'm wondering about a "special case". Would it be possible to "delay" any action on a message by marking it as pending somehow.

For example, pretend a message is received, a whitelist is checked, and the sender of the msg is not on the whitelist. Some external-to-JBM workflow is triggered to alert the recipient that a message is "pending" for them, so long as they approve the message. If the local user approves the message, the message is delivered. If not, it is rejected.

I realize that the workflow piece is outside the scope of JBM. However, what about the message "delay". Does JBM have a way to store a message, but not deliver it for a while (hours or days)?

Thanks!

David