--- title: Carrier filtering is blocking legitimate SMS. The... description: US carrier filtering of business SMS tightened enforcement in 2026 according to Sendivo CEO Thomas Driscoll, whose platform serves over 1,000 users. Legitimate... canonical: https://daily.dev/posts/carrier-filtering-is-blocking-legitimate-sms-the-operators-getting-through-are-doing-three-things-d-uvlwvj0r5 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Carrier filtering is blocking legitimate SMS. The operators getting through are doing three things differently | daily.dev og:description: US carrier filtering of business SMS tightened enforcement in 2026 according to Sendivo CEO Thomas Driscoll, whose platform serves over 1,000 users. Legitimate... og:url: https://daily.dev/posts/carrier-filtering-is-blocking-legitimate-sms-the-operators-getting-through-are-doing-three-things-d-uvlwvj0r5 og:image: https://api.daily.dev/og/posts/uVLwvJ0r5.png og:image:alt: Carrier filtering is blocking legitimate SMS. The operators getting through are doing three things differently og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Carrier filtering is blocking legitimate SMS. The operators getting through are doing three things differently **[The Next Web](https://daily.dev/sources/tnw)** · 4 min read · 0 upvotes · 0 comments ## Summary US carrier filtering of business SMS tightened enforcement in 2026 according to Sendivo CEO Thomas Driscoll, whose platform serves over 1,000 users. Legitimate senders who get their texts delivered follow three practices: registering accurately and keeping message content matched to the registered brand and use case, enforcing real opt-in and stopping immediately at the first complaint, and monitoring delivery per campaign to pull failing traffic before the carrier blocks it. On shared platforms, one non-compliant sender's behavior can hurt deliverability for every other sender sharing that reputation. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why is my business SMS not being delivered even though it doesn't bounce back? US carriers filter A2P business text messages based on spam volume, complaint rates, and content mismatches with the registered 10DLC campaign, silently dropping messages without a bounce notification. A campaign registered for appointment reminders that instead sends promotions, or a brand name that doesn't match the sender named in messages, gives carriers reason to block the traffic. _Anyone debugging silent SMS delivery failures can find similar carrier-filtering explanations on daily.dev._ ### What is 10DLC registration and why does it affect SMS deliverability? 10DLC is the registration process carriers require for application-to-person business texts sent from ordinary ten-digit numbers, covering both a brand's legal identity and each individual campaign's purpose, sample content, and opt-in method. Carriers use that registration record to decide how much to trust incoming traffic, so mismatches between registered use case and actual content trigger filtering. _Teams setting up business texting can track A2P and 10DLC guidance like this on daily.dev._ ## Similar posts on daily.dev - [India forces caller-ID apps to feed spam reports to telcos](https://daily.dev/posts/india-forces-caller-id-apps-to-feed-spam-reports-to-telcos-sdr5v6fva) · TechCrunch · 0 upvotes · 0 comments - [Canada arrests three for operating “SMS blaster” device in Toronto](https://daily.dev/posts/canada-arrests-three-for-operating-sms-blaster-device-in-toronto-7eh5pp58p) · BleepingComputer · 0 upvotes · 0 comments - [India Orders Messaging Apps to Work Only With Active SIM Cards to Prevent Fraud and Misuse](https://daily.dev/posts/india-orders-messaging-apps-to-work-only-with-active-sim-cards-to-prevent-fraud-and-misuse-sd2ghsqsl) · The Hacker News · 0 upvotes · 0 comments - [Why Messaging Compatibility Matters in Mobile Audience Planning](https://daily.dev/posts/why-messaging-compatibility-matters-in-mobile-audience-planning-8poe3lnjr) · Medium · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/carrier-filtering-is-blocking-legitimate-sms-the-operators-getting-through-are-doing-three-things-d-uvlwvj0r5) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Carrier filtering is blocking legitimate SMS. 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