SMS & Push marketing
Pushing the boundary of SMS content
Morganne Whaley
In the world of lifecycle marketing, SMS is the ultimate high-engagement tool. It is immediate, personal, and boasts open rates that email can only dream of. Naturally, brands want to use that intimacy to show off their personality, sometimes by pushing the boundaries with edgy copy or informal language.
However, the question of "what can I say?" in a text message is not just about brand voice, it is about deliverability and compliance. If you are wondering whether you can tell your subscribers, "The Warriors kicked ass tonight!" or if you need to self-censor, you are navigating a minefield of carrier filters and industry regulations.
The myth of the "profanity filter"
Technically, there is no federal law that prohibits a brand from using a swear word in a marketing text. The TCPA focuses on consent and timing, not your vocabulary. However, the legal floor is not the same as the carrier ceiling.
Mobile carriers (like Verizon, AT&T, and T-Mobile) use sophisticated automated filters to protect users from what they deem "objectionable content." While a phrase like "kicked ass" is mild, carriers have broad discretion under CTIA guidelines to block messages containing "intense profanity" or "inappropriate content." If your message is flagged, it won't just be delayed; it will be dropped entirely, and your sender reputation will take a hit.
Understanding the SHAFT-C framework
The most important acronym to remember is SHAFT-C (Sex, Hate, Alcohol, Firearms, Tobacco, and Cannabis). These are the "hard" prohibitions. While some, like alcohol, are allowed with proper age-gating, others, like cannabis and CBD, are blocked at the carrier level regardless of state legality. Before you worry about a "hell" or a "damn," you must ensure you aren't hitting the "hard" no-go zones. The industry follows the SHAFT-C acronym, which outlines content that is either strictly prohibited or heavily restricted:
S: Sexually Explicit Content
H: Hate Speech (and intense profanity)
A: Alcohol
F: Firearms
T: Tobacco
C: Cannabis/CBD
If your "edgy" copy leans into any of these categories, even as a joke, carriers will likely suspend your campaign without warning. In the context of "kicked ass," most modern filters will let it through, but using "a**" or "a$$" can actually be more risky. Creative misspellings are a hallmark of spam, and carrier filters in 2026 are trained to flag "leetspeak,” which is an informal language or code used on the internet, as a high-risk indicator. When you use asterisks or special characters to mask a word, you are using the same tactics as high-volume spammers.
Personality vs. deliverability
Taking a strong position on brand voice is important, but it should never come at the cost of your multi-channel orchestration. If you are a sports brand or a disruptor in the beverage space, "kicked ass" might be perfectly on-brand. But if you are a high-volume sender, even a 1% increase in carrier filtering can result in thousands of dollars in wasted spend.
When in doubt, follow the same rigorous QA process you use for email. Test your "risky" copy with a small segment first. If you see a dip in delivery rates compared to your control group, the carriers have spoken: the "edge" isn't worth the "block."
The "vibe check" for your SMS strategy
The shift to SMS and push retention means that customers expect a more human tone on their phones. But "human" doesn't have to mean "profane." You can push the boundary of content through deep personalization and real-time relevance rather than relying on shock value.
The SMS content cheat sheet
While the rule of thumb for lifecycle marketing is to write like a human, SMS is the one channel where "too human" can get you blocked. The reality is that SMS deliverability in 2026 is governed by a mix of automated AI filters and strict industry frameworks. To help your team navigate the "grey area" of mobile copy, use this cheat sheet to distinguish between brand personality and a deliverability death sentence.
Category | Safe (Green Light) | Risky (Yellow Light) | Prohibited (Red Light) |
Profanity | Mild terms like "hell," "damn," or "kicked ass" (use sparingly). | Heavy swearing or aggressive insults. | Hate speech or any derogatory slurs. |
Formatting | Standard sentence casing and clear, readable English. | Using "a**" or "a$$" to bypass filters. | ALL CAPS |
SHAFT | Broad lifestyle mentions (e.g., "night out"). | Unverified mentions of wine or spirits. | Cannabis, CBD, vapes, or firearms. |
Finance | Account alerts from the primary servicer. | Phrases like "easy money" or "wealth building." | Payday loans or third-party lead gen. |
Links | Brand-specific, verified short links. | Public shorteners like bit.ly or tinyurl. | Links to insecure or donation sites. |
Protecting your sender reputation
Every time a message is filtered, your "Trust Score" with The Campaign Registry (TCR) is at risk. High filtering rates lead to lower throughput, meaning your time-sensitive abandoned cart nudges or flash sale alerts might not reach customers until it's too late.
Integrate your mobile copy into your total email QA process. Before hitting send on a bold new campaign, ask yourself: Does this copy match our registered 10DLC use case? If it deviates too far, you are gambling with your deliverability.
Audit your mobile compliance
If you are struggling to find the line between a bold brand voice and a compliant one, we can help. At Scalero, we don't just look at your copy; we look at the technical infrastructure that gets that copy to the inbox (or the lock screen).
Take advantage of our Free Email & SMS Audit. We will review your current messaging flows, check your compliance, and help you craft a voice that resonates with your audience without triggering the filters.
