OPT-IN SMS
Opt-in SMS refers to a process where a user gives their explicit permission to receive messages from a business or organization. This consent-based method is essential in building trust, protecting user privacy, and complying with communication laws in many countries, including India.
When you give your phone number to a brand and agree to receive updates, offers, or alerts—either by filling out a form, checking a box, or replying with a specific keyword—you are “opting in” to receive SMS from them. Without this permission, sending promotional or marketing messages can be considered spam and may even result in legal penalties.
Opt-in SMS is the first step in creating a legally compliant and effective SMS marketing campaign. For example, a user may opt in by texting “JOIN” to a short code or entering their number on a website during registration. Once they opt in, businesses can send them updates like sales offers, event invites, reminders, or loyalty rewards.
There are two common types of opt-in methods:
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Single Opt-In – The user enters their number and starts receiving messages right away.
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Double Opt-In – After entering their number, the user receives a confirmation SMS and must reply to confirm consent.
Double opt-in is preferred as it adds a layer of verification, ensuring the number is correct and the user really wants to receive texts.
Benefits of using opt-in SMS include:
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Higher engagement rates because users actually want the messages
Lower risk of being reported as spam Better reputation and deliverability
Legal protection and compliance with laws like TRAI in India or TCPA in the U.S.
Businesses should always store consent records and provide an easy way for users to opt out. A typical message might end with, “Reply STOP to unsubscribe.”
In summary, opt-in SMS ensures you’re talking to people who want to hear from you. It builds relationships, improves marketing results, and keeps your brand legally safe.