special mail queue ?

[Frank Bonnet]

Hello

I have a request from staff here.
They need to manually post personalized emails to around 100 professors
the person who will send those emails wants to verify each email before
sending it but all emails have to be send at the same time for 
administratives reasons ...

Is it possible to define a temporary postfix spool queue for that usage 
to let
emails stack in it , then when all emails have been sent and have the OK
from staff push the button to send all emails at once ?

thank you