Regulated and high-risk
Categories standard business texting filters hardest: financial, health-adjacent, cannabis, debt, crypto.
4 pages
Why does a regulated business get filtered on standard business texting?
A regulated business gets filtered because standard business texting is a registration system before it is a delivery system. Application-to-person SMS in the United States runs on A2P 10DLC: a brand record filed with The Campaign Registry, a campaign submitted with sample messages and a described use case, and carrier review of both before traffic moves. A regulated use case is the one most likely to draw a second look, and the sample messages that describe it honestly are the ones most likely to fail.
Content filtering sits behind registration and is the part that surprises people. Carriers apply keyword and content rules to SMS and MMS traffic, and the CTIA's Messaging Principles and Best Practices names the categories treated hardest: sex, hate, alcohol, firearms and tobacco, plus cannabis and anything read as high-risk financial promotion. A message can clear registration, send, report back as delivered and never reach the handset. What the sender sees is a flat reply rate rather than an error, which is why so many businesses in these categories conclude the market is cold when the channel was closed.
A dedicated iMessage line removes those gates for a mechanical reason. iMessage runs over Apple's own data service rather than carrier SMS and MMS routes, so there is no brand record to file, no campaign to vet, no shortcode to lease and no carrier content filter between the words you wrote and the words your buyer reads. That is a routing fact rather than an exemption from anything. Contacts who cannot receive iMessage fall back to RCS and then SMS in the same campaign, and that fallback traffic rides carrier routes and inherits their rules.
The obligations do not move. Consent and opt-out duties under TCPA and state telemarketing law apply in full, your own regulator's advertising rules apply in full, and message history exports so a supervised firm can review what was said. Some programs get refused here whatever they pay, and the pages below say where each line sits rather than leaving it to a sales call: the cross-vertical overview, cannabis and CBD wholesale, debt and credit, and crypto and web3.
Frequently asked questions
Is this a way around A2P 10DLC registration?
No, and the distinction is the whole point. A2P 10DLC governs application-to-person traffic on carrier SMS routes. An iMessage does not travel those routes, so there is nothing to register rather than something being skipped. Any SMS fallback inside a campaign does ride carrier routes and follows their rules, and every consent, opt-out and record-keeping obligation applies to every message on every channel.
Can a regulated brand name its product and link to its own site?
Yes. Product names, prices, photos, real attachments and links on your own domain all travel, because no carrier content filter sits in the path. The limit moves to your regulator: FINRA communication rules, state bar advertising rules, FTC substantiation and FDA claim limits all still govern what the message may say. The channel decides whether it arrives.
What gets refused?
Anything unlawful where it lands, any program that cannot name a consent basis for its list, deception about who is texting, third-party consumer debt collection without validated consent and required disclosures, and blast patterns dressed up as conversation. Message intent is configured during white-glove setup, so a refused program never reaches a line. The full policy is at /anti-spam.
Does a rejection from an SMS provider carry over?
Not automatically, because that was a carrier or registry decision about 10DLC traffic and this is a different route. The two questions underneath it still get asked at setup: is the program lawful where it is sent, and can you name where the numbers and the permission came from. A program that fails either is refused here as well.