10DLC registration verifies your business number and the use cases you message your customers for as legitimate so mobile carriers know you are not a spammer. The Campaign Registry and the telcos vet this information. 

Unregistered messages with typical business-to-consumer (B2C) patterns, like texts with URLs and high-volume broadcasts, risk being flagged by carriers, damaging deliverability rates. Registering a brand and campaign with 10DLC ensures carriers like Verizon, AT&T, and T-Mobile guarantee high deliverability rates for B2C messaging. Think of it like TSA Pre-check or Clear for texting.

To register your brand, sign in to Convos and complete the form in the Phone # Registration tab.