Subtext is a New York City-founded SMS marketing platform, established in 2019 by Advance Alpha Group. It helps organizations build direct relationships with their audiences through personalized, two-way text messaging. Its customers span newsrooms and media, music, sports, marketing and commerce, creators, and politics and advocacy. The platform supports audience growth, subscriber engagement, campaign management, and revenue generation, helping customers communicate without relying on social media algorithms or third-party audience platforms.

Subtext’s tools include broadcast messaging, subscriber inboxes, audience tags and segmentation, landing pages, embeddable forms, QR codes, keyword sign-ups, and CSV imports. Engagement features include auto-replies, drip sequences, surveys, templated replies, and custom welcome messages. Customers can track replies, clicks, and audience growth through analytics and reports, and connect their systems using Subtext’s SMS API and real-time webhooks. The platform also offers subscriber data management, security and compliance features, and a dedicated SMS strategist for onboarding and ongoing guidance.