You registered your brand and campaign. You got the green checkmark. And then a scheduled 40,000-contact blast just… stopped delivering somewhere around message 10,000, spread over the day, with a chunk marked as filtered. No error you can act on. No email from anyone. Just a ceiling you didn't know existed.
That ceiling is your daily throughput cap, and on T-Mobile specifically it's set by a number most senders never see: your brand's trust score from vetting. Full disclosure: I work for ReadySMS, so I have a horse in the "get registered correctly" race. But this particular topic is one where the honest answer is "most of you don't need to spend money here" — so I'll walk the math both ways.
The number nobody shows you
When you register an A2P 10DLC brand, The Campaign Registry (TCR) assigns your brand a trust score. Standard registration produces a baseline score derived automatically from the identity data you submitted — your EIN, business name, address, and how cleanly they match public records. Optional external vetting re-runs that identity check through a third-party vetting provider and can raise the score.
The score itself is roughly a 0–100 scale. What matters isn't the number in the abstract — it's that T-Mobile (and only T-Mobile, at least this aggressively) maps that score to a daily message limit per brand. AT&T and Verizon throttle differently, mostly on per-second throughput rather than a hard daily cap, which is a separate rabbit hole I've covered in Same Campaign, Different Carriers.
The T-Mobile daily brand cap works in tiers. Approximate, publicly-discussed brackets look like this:
| Trust score band | T-Mobile daily cap (per brand) |
|---|---|
| Low (~<25) | 2,000 messages/day |
| Mid (~25–49) | 10,000 messages/day |
| Upper-mid (~50–74) | 40,000 messages/day |
| High (~75+) | 200,000 messages/day |
Treat those numbers as industry-approximate — carriers adjust them and don't publish an official rate card. But the shape is real and stable: it's a step function, not a smooth curve. A score of 24 and a score of 49 might land in wildly different buckets. That's why "what 25 vs 75 unlocks" is the actual question, not "how many points do I have."
Why the jumps matter more than the points
The step-function part is the trap. Say your automatic (unvetted) standard score lands you at, hypothetically, 42. You're in the ~10,000/day bracket. Paying for vetting bumps you to 62 — you cross into the ~40,000/day bracket. That single tier crossing 4x'd your daily headroom.
But if your unvetted score already sits at 55, you're already in the 40,000/day bracket. Vetting that pushes you to 71 gains you nothing on T-Mobile until you cross 75. You paid for points that didn't move you to a new step.
This is why "should I pay for enhanced vetting?" has no universal answer. It depends entirely on which side of a step boundary your free, automatic score already sits — and you don't reliably know that until after standard registration comes back.
What "cap" actually means when you're blasting
The daily cap is a volume ceiling, separate from the per-second throughput (TPS) that governs how fast a single message stream flows. Both bite you, in different ways:
- TPS decides how long a single blast takes to drain. A low TPS is why your 50,000-contact blast takes four hours even when everything's approved.
- Daily cap decides how much you can send to T-Mobile numbers in a 24-hour window before the carrier starts filtering the overflow.
Here's a worked example. Suppose 40% of your list is on T-Mobile — a common share. You have 90,000 contacts, so ~36,000 of them are T-Mobile.
- At the ~10,000/day bracket (mid score), those 36,000 T-Mobile messages take four days to clear cleanly. Anything you push past 10,000 on day one gets filtered — and filtered doesn't mean "queued," it means gone, and it dings your reputation on the way out.
- At the ~40,000/day bracket, the whole T-Mobile segment clears in a single day.
- At ~200,000/day, the cap is a non-issue for anyone but genuine enterprise senders.
If your entire monthly volume to T-Mobile numbers is under ~10,000 messages, the cap will never touch you. Full stop. This is the case for most local businesses, single-location practices, and small nonprofits — and it's why I keep telling those senders to skip vetting.
When enhanced vetting pays off — and when it's wasted money
ReadySMS charges the vetting through at the provider's rate: $40 Standard, $100 Enhanced, one-time. Standard 10DLC registration itself is the usual carrier structure — roughly ~$10/mo per brand and ~$20/mo per campaign — and for most senders that's the whole bill. I've broken the "is $40 worth it" call down further in Is 10DLC Brand Vetting Worth $40?, but here's the short decision tree:
Pay for vetting if:
- You send more than ~10,000 messages/day to T-Mobile numbers (so ~25,000+/day total across carriers, depending on your T-Mobile mix), and
- Your standard/automatic score came back low enough to be stuck in the 2,000 or 10,000 bracket.
Don't pay for vetting if:
- Your total T-Mobile volume is comfortably under the bracket your free score already sits in, or
- Your automatic score already cleared the tier you need. Extra points inside the same bucket buy you nothing.
The honest edge case: a brand-new EIN or a business with thin public records sometimes scores low on the automatic pass purely because there isn't enough data to match against — not because anything's wrong. If that's you and you send volume, enhanced vetting ($100) is the cleanest way to establish identity and jump a tier. That's the one scenario where I'd push someone toward the Enhanced tier over Standard.
The cost math, run honestly
Let's say vetting moves you from the 10,000/day bracket to the 40,000/day bracket, and you have that 36,000-message T-Mobile segment to send monthly, run as a single blast.
Without vetting: the send stretches across four days to avoid filtering, or you eat filtered messages if you force it. Filtered messages you paid to attempt are pure waste, plus reputation damage that lowers future deliverability. If even 5,000 of those 36,000 get filtered on a forced same-day send, at ReadySMS Standard ($0.02/segment + $0.0045 carrier = $0.0245 all-in) that's roughly $122 in messages that went nowhere — every time you run it. Two blasts and you've spent more than the $100 Enhanced vetting fee, permanently, with reputation harm on top.
With vetting: the whole thing clears in a day, nothing filters for capacity reasons, and the one-time $100 is done.
That's the real trade — not "vetting makes you deliver better" in the abstract, but "vetting stops you from re-buying filtered messages every campaign." If you're not re-buying filtered messages, there's no return to capture.
Getting to the score fast
The slow part of all this is usually not the vetting — it's the base registration. Traditional A2P onboarding runs two to four weeks of back-and-forth. ReadySMS handles brand and campaign registration in-app, and most approvals land same-day; the full compressed timeline is in Most A2P Onboarding Takes 2–4 Weeks — Here's Every Step That Compresses Into Same-Day.
Practical order of operations:
- Register your brand and campaign standard. Get the automatic score back.
- Check which T-Mobile bracket it landed you in against your actual daily T-Mobile volume.
- Only then decide on vetting. If your free score already covers your volume, you're done — don't spend the $40 or $100.
- If you're stuck a tier below what your volume needs, add Standard ($40) vetting; go Enhanced ($100) only if you're a thin-file new entity or need the top bracket.
And make sure the campaign use case matches what you actually send before you worry about score at all — a mismatched use case silently drops delivery no matter how high your trust score is.
The takeaway
Your T-Mobile daily send cap is set by a trust score you never see, in steps rather than a smooth line, so the only question worth asking is which side of a step boundary your free score already lands on. Register standard first, read your bracket against your real T-Mobile volume, and buy vetting only when a tier crossing actually clears a ceiling you're hitting. For most low- and mid-volume senders, the automatic score is plenty and vetting is money you don't need to spend.
If you want to see where your volume falls before deciding, our cost calculator will get you the segment and spend math, and the pricing page lays out the vetting add-on alongside everything else. Register the brand, read the bracket, then decide — in that order.