Let people text you without typing your number.

The pre-written keyword is what makes this worth doing

An SMS code with an empty body is just a number you did not have to type. An SMS code with a keyword is a routable, automatable signal that arrives correctly spelled every single time:

• JOIN on a poster, feeding a mailing-list autoresponder.
• TABLE 12 on a table talker, so the message tells you where to go.
• UNIT 4B on a maintenance sticker, identifying the asset without a work-order number.
• INFO on a property board, triggering the details to come straight back.

Because the keyword arrives exactly as you wrote it, you can route or automate on it with confidence. Ask a human to type TABLE 12 and you will receive table12, Table 12, tabel 12 and a photograph of the table.

Keep it short. The whole body is encoded into the pattern, so a long pre-written message makes a denser, more fragile code for no benefit.

One honest caveat about pre-filled bodies

There has never been a single agreed standard for pre-filling an SMS body from a link, and platforms have historically disagreed about the syntax. This generator uses a form designed to satisfy both conventions at once, and it works on current devices.

The failure mode, if some particular phone does not honour it, is mild and worth knowing about: the messaging app still opens correctly addressed, just with an empty body. Nothing breaks; the person types their own message.

So design the printed material to survive that. "Text us to join" alongside the code works whether or not the keyword lands. If the keyword genuinely matters to an automated workflow, test on a real handset before a large print run.

Use international format

Enter the number with a +, the country code, then the number. Spaces, brackets and dashes are fine to type — they are formatting rather than part of the number, and they are stripped for you.

A local-format number works for people already in that country and fails silently for everyone else. If the code goes on anything that travels — packaging, a trade-show stand, a vehicle, a website — international format is the difference between working and not.

Why people text when they will not call

The practical case for SMS over a phone code is not technical. It is that a large share of your audience does not want to have a phone conversation with a stranger, and will simply not act rather than call.

Texting also works outside business hours without anyone feeling they are imposing, leaves a written record of what was agreed, and gives you a queue you can work through rather than a missed call with no context. For enquiries arriving from print at 9pm, that is the whole ballgame.

Against WhatsApp: SMS needs no app and works on every phone sold, which makes it the safer default in markets where WhatsApp is not near-universal.

Frequently asked questions