Private Message Just the Forum Admins & Moderators?

You normally can have multiple addresses in the TO box for messages on the Internal mail system but I think there is a bug with that at the moment.
 
As for mass e-mail to Admins and Mod, No, that is not supported here.
 
Get their e-mail addresses and use your own external e-mail, that's what I do.

Thanks for the reply.  But do you think it should be expanded?

as hal9000, you should be able just to put commas between member address in the two field, so you could do this for all your admins/mods.  If it's not working, please post here and we'll investigate.

Chief,
I thought you knew about this problem, maybe not.
1. You can only type as many names into the TO box as the box space allows, generally only enough space for two, possibly three.
2. When you do and separate with a comma you get an error message when trying to send a message. Like the image below.
.

ahh, i did not know about that, i will open up a ticket, thank you.