New Horizon Experience. This article describes the New Horizon Experience, which is available now. As of September 28, 2026, New Horizon is the default starting point on a computer or laptop. In the Horizon WebRef mobile apps for Android and iOS, New Horizon is already what you see. If you still have the older layout, choose Switch to New Horizon from the banner or your account menu. You can switch back to Legacy Horizon from that menu any time during the transition.
This article covers assignment text messages on Personal Profile under Notifications. Officials and other signed-in members set this for their own account.
Use it when you want assignment texts, when you want to stop them, when a carrier warning appears, or when you want to set up Premium SMS. For the rest of the profile, see Personal Profile. Quiet hours are also on that same Notifications card. See How do I change the time text messages are sent?.
Opt in or opt out (free Email-to-SMS path)
Sign in, then open Personal Profile and choose Notifications.
On a computer, the same screen uses the wider layout.
Free assignment texts use an Email-to-SMS gateway. They are off until you choose a Mobile carrier that matches your phone service. Leave Mobile carrier blank to opt out of that free path. You can also set a maximum number of texts per day (including unlimited when offered) and quiet hours with Do not text before and Do not text after.
Save the Notifications section if the page still shows unsaved changes. Send test text sends a sample assignment-style message after your profile and mobile details are saved.
When a carrier no longer delivers free texts
If Mobile carrier is Verizon, AT&T, or T-Mobile (or already saved as one of those), a warning appears titled This carrier no longer delivers free assignment texts. Those carriers have discontinued their free Email-to-SMS gateways, so assignment texts through that setting will not arrive.
Install the Horizon WebRef mobile app for Android or iOS to get push notifications instead. Paid Premium SMS (real text messages, not email-to-SMS) is available now for Officials. Choose View Premium SMS or Get Premium SMS to open Add-on services.
On a computer, the same warning and button appear on the wider Notifications layout.
If your carrier is not listed for free Email-to-SMS, use the in-product help link for unsupported carriers, or set up Premium SMS.
Premium SMS (real text messages)
Premium SMS is an optional prepaid add-on for Officials in the New Horizon Experience. It sends assignment texts as real SMS to your verified mobile number. For years, many texts rode free Email-to-SMS gateways. Major carriers shut those free gateways down, so texts stopped arriving even when nothing changed in your Horizon settings. Real SMS has a real per-message cost, so Premium SMS is prepaid in USD — optional, and not the same as your organization’s subscription.
On Add-on services, choose Preload credits, verify your mobile number with a code if prompted, agree that the purchase is non-refundable, set a top-up amount (minimum $25.00 USD), optional auto-reload settings, then continue to payment. After it is active, Notifications hides the Mobile carrier list, quiet hours still apply, and Manage Premium SMS returns you to Add-on services. Send test text uses your prepaid balance. View balance history shows message cost and delivery status, including carrier confirmation time when the carrier reports it.
On a computer, the same Add-on services card sits beside the profile sidebar.
Choose Preload credits to begin.
On a computer, use the same button on the wider card.
Agree that the purchase is non-refundable, set a top-up amount (minimum $25.00 USD), optional auto-reload settings, then choose Continue to payment.
On a computer, the purchase form uses the same fields.
After purchase, the card shows your balance and plan controls. View balance history lists message cost and delivery status, including carrier confirmation time when the carrier reports it.
On a computer, the active card shows the same balance and plan controls.
On a computer, the balance audit trail opens in a wider window with the same delivery details.
If you still see the older legacy desktop or laptop layout
On the older all-in-one profile, these fields sit on a Text Messaging tab instead of a Notifications tile. Mobile carrier blank still means opted out of the free Email-to-SMS path. The same Verizon, AT&T, and T-Mobile warning can appear there without a View Premium SMS button. Premium SMS and the Notifications tile belong to the New Horizon Experience.