We offer Add-On SMS, Email and Voice Message Packs that you can procure whenever needed. The Add-on Message Packs can be procured from the Account Summary page which is accessible from system’s Settings menu.
Note that you will need to have admin access rights to procure Add-on Message Packs. The amount procured will be added to your invoice and billed on your next billing date. Please contact firstname.lastname@example.org if you need any assistance in procuring additional Message Packs.