When you create a message you have the option to either schedule it to be sent in the future, or to send it right away. Sending a message right away is easy!
Once the message is saved, just make sure you are back at the "Drafts" section. If you are not at that page already, hover your mouse over the "Messages" tab and click "Drafts".
Next, you will see the list of your drafts. To send your broadcast now, click the "Send Options" button and select "Schedule a Broadcast".
Then, from your "Broadcast Settings" click the "Send Message Now" button. After clicking this button, your broadcast will be immediately sent.
That's it! Now, your broadcast message will immediately be sent to your subscribers.