Back to Help Center

Phone Numbers

Understanding Phone Number Capabilities and Costs

Learn what Voice, SMS, and MMS mean and how monthly number costs work.

Updated 9/17/2026

Each number lists what it can be used for and what it costs per month. ● Voice — the number can receive and place phone calls. ● SMS — the number can send and receive text messages. ● MMS — the number can send and receive picture messages (used for campaign flyers — see Outbound Calls → Adding a Flyer (MMS) to a Campaign). ● Monthly Cost — the recurring cost for keeping the number (e.g., $1.00/month), separate from your subscription plan cost.