Why SMS Gets ~90% Open Rates (and What That Means)
Updated June 17, 2026
SMS open rates run near 90% — most texts are read within three minutes — because a phone notification is hard to ignore and there's no spam folder hiding messages. But an open is not a reply or a deal. The number tells you the message was seen, not that it landed. High open rates make SMS a great first-touch channel; follow-up is what turns a read into a conversation.
The ~90% open rate is the stat that sells SMS, and it's real — text messages get read at rates email can only dream of. But it's also the most misunderstood number in outreach, because an open is the lowest bar a message can clear.
Knowing what the 90% actually measures — and what it conveniently leaves out — is the difference between treating SMS as a magic bullet and treating it as the powerful first-touch channel it really is. Here's the honest read.
Why the number is so high
Three structural reasons. A text fires a phone notification that sits on the lock screen until it's dealt with — there's no quiet inbox where it can be ignored for a week. There's no spam folder doing silent triage the way email has; a delivered text reaches the messages app. And the medium itself is personal, so people check it reflexively, usually within minutes.
Compare the channels and the gap is stark. Email open rates hover around 20% on a good day; SMS lands near 90% with most reads inside three minutes. That speed is half the value — a reply at 8pm gets answered before the prospect talks to anyone else, which is impossible on a channel people check twice a day.
| Metric | What it measures | Cold SMS (typical) | Cold email (typical) |
|---|---|---|---|
| Delivery rate | Carrier accepted and routed it | High when A2P-registered | High with good infrastructure |
| Open rate | Recipient saw the message | ~90%, mostly under 3 min | ~20%, over hours/days |
| Reply rate | Recipient responded | 5–15% on tight lists | 1–5% on tight lists |
| Conversion | Reply became a real deal | Driven by follow-up | Driven by follow-up |
Open rate is one metric in a funnel of four
What a 90% open rate does not buy you
An open is not interest, a reply, or a deal. If your targeting is loose or your copy reads like a blast, a 90% open rate just means 90% of the wrong people saw an irrelevant message — and some of them reported it. High visibility amplifies whatever you send, good or bad, which is why a great open rate on a bad list is actively dangerous.
The open rate also says nothing about cost downstream. Carriers can throttle or filter you, recipients can flag you, and a high read rate with a high complaint rate is the fastest route to a dead campaign. Visibility is leverage, not a result.
How to actually use the number
Treat the open rate as a given, not a goal. Because you can assume the message will be seen, the entire game moves downstream: is the list tight enough that being seen is welcome, is the copy relevant enough to earn a reply, and is the follow-up fast enough to turn that reply into a booked conversation?
That's the logic behind running SMS as one part of a system rather than a standalone blast. In BILT, the high open rate is the easy part — the value is that a reply gets worked by AI in minutes, escalated when it needs a human, and logged on the same record as the email and the offer. The 90% gets the message seen; the follow-up is what makes it pay.
Frequently asked
Is the 90% SMS open rate real?
Yes — industry-wide, SMS open rates run near 90% with most texts read inside three minutes. The number is genuine. What it measures is narrow: the message was seen, not that it was welcome, answered, or converted. It's the easiest metric in the funnel to hit and the least predictive of revenue on its own.
Why is the SMS open rate so much higher than email?
A text fires a lock-screen notification with no spam folder filtering it out, and people check messages reflexively within minutes. Email sits in a quiet inbox behind promotions tabs and spam triage. The medium itself, not better copy, is why SMS reads near 90% while email reads near 20%.
Does a high open rate mean cold SMS is better than cold email?
On visibility and speed, yes. On the full funnel, not automatically — a 90% open rate on a loose list or weak copy just means more of the wrong people saw it, and some reported you. The channels win together: SMS for speed and reads, email for length and detail, with follow-up under both.
What reply rate should I expect if 90% open?
On well-targeted cold lists, reply rates commonly run 5–15% — far below the open rate, which is the whole point. The gap between 90% seen and 5–15% answered is closed by relevance and follow-up, not by the open rate itself.
The takeaway
The ~90% open rate is real and worth having, but it only means the message was seen — not wanted, answered, or converted. It makes SMS the best first-touch channel for speed and visibility, while the deal still depends on a tight list, relevant copy, and fast follow-up. Treat the open rate as a given and compete downstream, where it actually pays.