SMS is the channel of immediacy — texts get read fast, far faster than email. That makes it powerful for the right messages and intrusive for the wrong ones, since it lands where people get messages from friends and family. Used well and within the rules, SMS is a sharp B2B tool; used carelessly, it burns goodwill quickly and can land you in legal trouble. Here's how to set it up right.
Use it for genuinely time-sensitive things
SMS is right for the urgent and brief: order confirmations, shipping updates, appointment reminders, quick time-sensitive notices. These are messages where immediacy is the value and the customer is glad to get them fast. SMS is wrong for long content, anything that can wait, or marketing blasts — those belong in email, where people engage on their own schedule. Match the channel to the moment, and reserve SMS for when fast actually matters.
Get consent first — this is not optional
Texting customers carries real legal obligations. You generally need clear consent before sending business texts, and the rules — including what counts as consent and what disclosures are required — are strict and vary by jurisdiction. This is the part you cannot wing. Make sure you have proper opt-in before you text anyone, and treat compliance as a requirement, not an afterthought. The penalties for getting it wrong are not small.
Make opting out easy
Every customer must be able to stop your texts easily, and you must honor it immediately. Easy opt-out isn't just legally required — it's good practice that keeps your list to people who actually want to hear from you. Respecting opt-outs protects both your compliance and your reputation; ignoring them does serious damage on both fronts.
Keep it sparing and valuable
Even with consent, restraint matters. Text too often or for trivial things and even opted-in customers tire of it fast. Reserve SMS for messages that genuinely benefit from immediacy, and the channel stays welcome. The businesses that keep SMS effective are the ones that treat each text as a small intrusion to be justified, not a free channel to fill.
Use it for the time-sensitive, get proper consent, make opt-out easy, and stay sparing. This article is general guidance, not legal advice, and SMS rules vary by jurisdiction — so confirm the specific requirements that apply to you before you scale. Get it right and SMS is a sharp tool; get it wrong and it's a fast way to lose trust and invite penalties.