How does one-off mass email sending work?

If you have finished the template and the filter, you need to do the following:

1. Click the Send message button below the filter.
2. Select Mass email or SMS based on the type of the message you would like to send.
3. In the popup window, add a template by clicking the  button.
4. Set a Recipient.
5. Set a Sender.
6. If you would like to send the message right away, click the  button. If not, schedule it for later and leave the sending up to MiniCRM.