Throughput Optimization
High-trust scores (>75) enable 60-225 msg/min. Low scores (<50) limit you to just 6 msg/min. Maximize capacity by aligning with new policies.
Compliance Accuracy
Avoid immediate blocks and $10,000 pass-through fines. T-Mobile's SHAFT enforcement and AT&T's crypto restrictions require precise content filtering.
Approval Speed
Policy alignment accelerates TCR registration. Carriers approve perfectly compliant campaigns in 1–3 days vs. 7–10 days for borderline submissions.
Current Carrier Fines & Penalties (2026)
Violating CTIA guidelines or specific carrier restrictions no longer just results in blocked messages. Carriers now actively pass through severe financial penalties to non-compliant brands.
Phishing, Social Engineering, or severe malicious traffic.
Illegal content (Cannabis/CBD), Loan matching, Debt relief.
All other SHAFT violations (Alcohol/Tobacco without age gate).
AT&T now hard-blocks all messaging from unregistered 10DLC numbers.
Snowshoeing or attempting to bypass filters results in permanent brand suspension.
Sudden >300% volume surges trigger automatic campaign un-provisioning.
Opt-out rates exceeding 5% result in immediate message throttling.
Carrier Evolution Timeline
Major regulatory milestones affecting the messaging ecosystem
U.S. Cellular 10DLC Integration
U.S. Cellular completes full integration into the TCR framework. All unregistered A2P traffic targeting U.S. Cellular subscribers faces immediate filtering and blocking.
T-Mobile Financial Penalties Live
T-Mobile begins actively passing through $500 to $10,000 non-compliance fines directly to brands utilizing prohibited content or engaging in phishing.
AT&T 100% Unregistered Block
AT&T ceases delivery of any A2P traffic that lacks proper TCR registration, effectively ending the grace period for legacy long codes.
Cross-Carrier Opt-Out Standards
Unified keyword processing mandated. Systems must process STOP, END, CANCEL, UNSUBSCRIBE, QUIT automatically within 5 seconds.
Carrier Rate Limits & Requirements
| Carrier | High-Trust Rate (>75) | Medium-Trust Rate (50-75) | Low-Trust Rate (<50) | Key Policy Status |
|---|---|---|---|---|
| T-Mobile | 60-225 msg/min | 30-60 msg/min | 6 msg/min | SHAFT Pass-through Fines |
| AT&T | 60-225 msg/min | 30-60 msg/min | 6 msg/min | 100% Unregistered Block |
| Verizon | 60-225 msg/min | 30-60 msg/min | 6 msg/min | Volume Spike Suspensions |
| U.S. Cellular | Aligned with T-Mobile | Aligned with T-Mobile | Aligned with T-Mobile | Full 10DLC Integrated |
Frequently Asked Questions
Trust scores improve through: (1) DUNS number verification (+10-15 points), (2) Business domain age (6+ months), (3) Online review presence (4+ star average), (4) Low-risk use case history (2FA, notifications before marketing). Improvement timeline: 2-4 weeks for visible gains; 2-3 months for substantial recovery.
Automatic suspensions occur for: (1) Volume spikes >300% in 24 hours (Verizon), (2) TCPA violations (all carriers), (3) SHAFT content violations (T-Mobile), (4) High opt-out rates (>5%), (5) Spam complaint rates (>0.1%). Recovery requires carrier escalation and documented compliance remediation.
SHAFT categories (most restricted): Sex-related content, Hate speech, Alcohol promotion, Firearms, Tobacco. Extended restrictions: Cannabis/CBD, Cryptocurrency/NFTs, Payday loans, Debt relief, Get-rich-quick schemes. Crypto and high-risk financial services face 7-14 day approval timelines vs. 1-3 days for standard campaigns.
Carriers mandate <5 second opt-out response times for all standard keywords (STOP, END, CANCEL, UNSUBSCRIBE, QUIT). System responses must be automated. Delays trigger throttling and trust score penalties. Failure to honor opt-outs within 1 minute creates TCPA liability ($500-$1,500 per violation).
📚 Compliance Tools & Resources
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Campaign Parameters
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