(MAIL ROOM)
Send the message, then exit the mail room if all of the addresses on the To: line turn out to be valid and usable (you can use the `who' command to check these in advance, though the status of recipients may change without warning).
If the To: line turns out to contain invalid recipients or recipients that are not usable by you, the message will not be sent and you will remain in the mail room.
It may be, however, that valid addresses on your To: line will forward to other addresses that are bogus; you'll receive warnings about these, but in this case your message will still be delivered to those addresses that are valid.
Note that there may be particularly long delays when sending to recipients with large forwarding/notification lists or when sending on occasions when the MOO is heavily loaded in general. In such a case, it is possible to continue editing the message while the send is in progress; any such edits affect only the text in the editor. In particular, the text of the message currently being sent remains as it was when you first typed the send command. However, any editing will mark the text as "changed" meaning that you will need to explicitly `abort' or `quit' in order to leave the mail room even if the send concludes successfully.