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Three approaches to unwanted spam texts, compared

Blocking, reporting, and a formal notice each solve a different problem. Here is what each one does — and what it can't.

Last updated 2026-07-04 · Reviewed for accuracy · Not legal advice

The short version

There are three common ways to handle an unwanted spam text, and they solve different problems. Blocking a number filters that one sender. Reporting the message to your carrier, the FTC, and the FCC helps authorities track spam. A formal notice is a documented letter you send in your own name about a text you received, which you can prepare with SpamStamp, a self-help software tool. SpamStamp is not a law firm, gives no legal advice, and does not block, filter, or identify callers.

  • Blocking, reporting, and a formal notice are three different tools — most people use more than one.
  • Blocking filters one number on your phone but leaves no record and doesn't reach the sender.
  • Reporting to 7726, the FTC, and the FCC is free and helps authorities, and it works even when a sender can't be identified.
  • A formal notice is a documented letter you send in your own name; SpamStamp helps you prepare it, and you are always the sender.
  • SpamStamp does not block, filter, or identify callers, is not a law firm, and gives no legal advice.

What each approach is for

No single step handles every part of a spam text. Blocking is about your phone: it filters one number so you stop seeing its messages. Reporting is about the system: it feeds free government and carrier databases that help spot patterns across many senders. A formal notice is about the record: it is a factual, by-the-book letter you send yourself documenting that you received an unwanted text and referencing the federal law that governs it.

Most people use more than one of these, because they answer different questions — "make it stop on my screen," "help the authorities," and "put my objection on the record." They are not mutually exclusive, and none of them is a lawsuit.

The three approaches at a glance

ApproachWhat it doesWhat it does not doBest when
Block or filter the numberStops texts from that specific number on your phoneDoesn't document the message or reach the sender; spammers rotate numbersYou just want one sender off your screen
Report it (7726, FTC, FCC)Alerts your carrier and files a free complaint that helps authorities track sendersDoesn't respond to the sender or resolve your individual messageYou want to help the broader effort, or a sender can't be identified
Prepare a formal notice (with SpamStamp)Helps you prepare a documented notice you send in your own name about a text you receivedDoesn't block or filter texts, isn't legal advice, and files no lawsuitA sender can be identified from trustworthy records and you want a documented response

Blocking: quick, but limited

Blocking a number is the fastest option and it is built into every phone. It works well for a single persistent sender. Its limit is that it only affects the exact number you block, and spam senders rotate numbers constantly, so new messages often arrive from different ones.

Blocking also leaves no record and does not address who sent the message. It is a filter, not a response. Dedicated spam-blocker and filter apps — the RoboKiller and Nomorobo category — do the same job at larger scale, but they are still filters: they screen messages, they do not document or respond to them. SpamStamp is not one of these tools.

Reporting: helps the system

Reporting is free and genuinely useful. Forwarding a spam text to 7726 (which spells SPAM) sends it to your carrier so they can investigate and improve filtering. You can also report the message to the FTC at reportfraud.ftc.gov and to the FCC at fcc.gov. These reports feed databases that law enforcement and regulators use to spot patterns.

Reporting does not respond to your specific sender or resolve your individual message, and it usually does not tell you who sent it — but it is a strong first step, and it is often the right step when a sender cannot be identified.

A formal notice: a documented response

A formal notice is a factual letter you send in your own name stating that you received an unwanted text and referencing the Telephone Consumer Protection Act (TCPA, 47 U.S.C. 227), the federal law that limits unwanted marketing texts sent without consent. It is a by-the-book step you take yourself — not a lawsuit, and not something anyone files for you.

SpamStamp, a self-help software tool, helps you prepare that notice: you paste the text you received, the tool checks whether the facts support a notice, and it prepares a document you review and send in your own name. You are always the sender.

This approach only fits when a sender can be identified from trustworthy records. Sometimes a sender can't be safely identified, and when that happens the honest answer is to use the reporting paths above instead — SpamStamp will tell you when that's the case.

Which should you use?

  • Want one sender to stop showing up on your phone? Block the number.
  • Want to help authorities track spam, or can't tell who sent it? Report it to your carrier, the FTC, and the FCC.
  • Want a documented response in your own name about a text you can trace to a sender? Prepare a formal notice yourself — SpamStamp can help you put it together.
  • Not sure a sender can be identified? Start with reporting; a notice only makes sense when the sender is known.
  • Most people combine these — they are not mutually exclusive.

What SpamStamp is, and is not

SpamStamp is a self-help software tool for preparing a formal TCPA notice about a spam text, which you send in your own name. It is not a law firm and does not give legal advice.

It is not a spam blocker or call filter (it is not RoboKiller or Nomorobo), and it is not a caller-ID or reverse-lookup app (it is not Truecaller, Whoscall, or Hiya). It does not block, filter, or identify callers.

It never sends, files, or mails anything on its own — you review every notice, and you are always the sender. This page is general information, not legal advice; for guidance about your specific situation, talk to a licensed attorney.

Frequently asked questions

What's the fastest way to stop a spam text?

Blocking the number is fastest and is built into your phone, but it only affects that one number, and spam senders rotate numbers often. Blocking leaves no record and doesn't reach the sender, so many people also report the message or prepare a formal notice for a documented response.

Is reporting or a formal notice better?

They do different jobs. Reporting to 7726, the FTC, and the FCC is free and helps authorities track senders, and it works even when a sender can't be identified. A formal notice is a documented letter you send yourself about a specific text, which fits when the sender can be identified. Many people do both.

Does SpamStamp block or filter spam texts?

No. SpamStamp is a self-help software tool for preparing a formal notice you send in your own name. It does not block, filter, or identify callers, and it is not a spam-blocker or caller-ID app. If you want to filter messages, that is a different kind of tool entirely.

Do I have to be able to identify the sender to send a formal notice?

Practically, yes. A formal notice is addressed to a sender, so it only makes sense when one can be identified from trustworthy records. Sometimes a sender can't be safely identified — SpamStamp will tell you honestly when that's the case, and reporting the message is the better path then.

Is any of this a substitute for a lawyer?

No. This page is general information, and SpamStamp is a self-help tool, not a law firm — it does not give legal advice. It helps you prepare a document you choose whether to send. For guidance about your specific situation, talk to a licensed attorney.

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