As e-mail queue allows sending of massive amounts of e-mails, we've implemented the Mass e-mail feature. This feature enables you to send the same e-mail to a large amount of user.
You can do this in Site Manager -> Administration -> Users -> Mass e-mail.
Using the Site drop-down list, you can select which site are the recipients related to. Based on this choice, users and user roles related to the chosen site can be selected using the Select buttons in the Recipients section. When choosing a user or role, CTRL+left click can be used to select multiple users or roles. If you choose (all) from the Site drop-down list, the Roles field will be hidden as user roles are always site-related.
You can also add some attachment to the mail using the Attach file link.
In the e-mail queue, you will see the Show details link instead of recipient's e-mail address for mass e-mails, as you can see in the screenshot below.
After clicking the link, a window will appear as in the screenshot below. You can delete recipients from the list, so that the mass e-mail will not be delivered to them. This can be done using the Delete () icons or by selecting more recipients using the check-boxes and clicking the Delete selected link.
Page url: http://devnet.kentico.com/docs/devguide/index.html?sending_mass_e_mails.htm