Keyword (texting)
Definition
In texting, a keyword is a word someone texts to a short code to start a specific program, such as SLIDES to get a slide deck or JOIN to sign up for a list. On a shared short code, the keyword tells the system which organization and which program the message belongs to.
Updated November 3, 2026
What is a keyword?
In texting, a keyword is a word someone texts to a short code to start a specific program. "Text DEMO to 33777" asks people to send the keyword DEMO to the short code 33777. On a shared short code, where many organizations use the same number, the keyword is how the system knows which organization and which program a message belongs to. Without it, the text would have nowhere to go.
Keywords are written in capitals in calls to action so people can read them clearly, though most people type them however their phone capitalizes them.
How does it work?
The keyword is the first thing the system reads in an incoming text. It matches the word to a program and starts it: the reply might ask for an email address, send a download link, or ask a poll question. Because each keyword maps to one program, a keyword on a shared code can only be held by one organization at a time.
Picking a keyword is mostly about the room it will be used in. Say it out loud before you commit. Words with odd spellings, words that sound like other words, and anything mixing letters and numbers (O and 0, I and 1) cause failed texts. A word that names what people get, like SLIDES, GUIDE, or FEEDBACK, is easier to remember than a brand name or an acronym.
On Textiful:
- Keywords are texted to shared short code 33777 or 55444.
- A keyword is unique on its short code, so nobody else on Textiful can use it there. If it's taken on one code, it may be free on the other.
- Reserved words (YES, WIN, FREE, VOTE, TEXT, and others), single letters, number-only words, and scam-like brand names are refused.
- One keyword is included on every plan; more are $10/month each. See keywords for more.
Why it matters at live events
A keyword is the only part of a text-to-join call to action that people have to remember, so it carries more weight than it looks. A keynote speaker might put it on the last slide and say it twice. A band calls it out between songs, when the crowd can't see a screen. A booth team prints it in letters big enough to read from the aisle.
Separate keywords also give you separate numbers. Each Textiful flow has one trigger, so a keyword used only in the morning session reports on its own, apart from the one on the afternoon slide or the one on the booth banner. That shows which room or placement brought people in.
Keywords and QR codes do the same job in different spots. A QR code works up close and needs no keyword at all; a keyword works when people are listening or reading from across the room. A QR code and a keyword can each start a copy of the same flow. For help choosing, see Should I use a QR code or a keyword at my event?
Key takeaways
- A keyword is the word texted to a short code that starts one specific program.
- On a shared short code, each keyword belongs to one organization at a time.
- Choose a short word that's easy to say, hear, and spell, ideally naming what people get.
- Using different keywords for different sessions or placements gives you separate reports.
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Questions people ask
A good keyword is short, easy to spell, and easy to hear correctly when you say it out loud. Words tied to what people get, like SLIDES or FEEDBACK, are easier to remember than your company name.
On a shared short code, each keyword can belong to only one program, so someone may already have it. Textiful also refuses reserved words like YES, FREE, and VOTE, single letters, number-only words, and scam-like brand names.
A keyword works best when people hear it or read it from a distance, like from the stage. A QR code works best up close, like on a table tent or booth sign, and many events use both.
One keyword is included on every plan, and more are $10/month each. QR codes are free and don't need a keyword.
Keep exploring
Short code
A short code is a five- or six-digit number that organizations use to receive and send text messages at volume, most often for text-to-join sign-ups, voting, and requests for information. Mobile carriers review each short code program before it goes live.
ReadQR code to SMS
A QR code to SMS is a QR code that, when scanned, opens the phone's texting app with the recipient number and message already filled in, so the person only has to tap send. It turns a camera scan into a text without typing a number or keyword.
ReadText-to-join
Text-to-join is a way to sign up by text: a person texts a keyword to a short code, or scans a QR code that opens a pre-filled text, and answers a question or two to join a list, get a download, or register for something.
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