iOS 26's "Screen Unknown Senders" feature, which filters messages from unknown numbers directly into a separate "Unknown" folder without notifications, aligns with longstanding practices in the messaging ecosystem that prioritize known senders. This mirrors Android's approach, which has employed automatic spam detection since 2019. The feature signifies an evolution rather than a revolution, as both iMessage and Google Messages have historically focused on directing attention toward trusted senders. For businesses, the challenge lies in maintaining the immediacy and value of SMS by ensuring their messages are recognized and elevated from the "Unknown" category, emphasizing user-initiated interactions and clear branding from the outset. The overarching aim is to protect users while ensuring effective communication for registered messaging campaigns, with best practices involving user consent and recognizable identity to preserve the channel's effectiveness.