Send a single anonymous text, and don't follow up

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L'équipe SMS Anonyme27 October 202612 min read

In short. An anonymous text only protects you once. Sent again, reworded, followed up the next day, it stops being an isolated message: it becomes a series, and therefore an exploitable history, and it may fall under the offence of harassment set out in Article 222-33-2-2 of the French Criminal Code — which explicitly targets repeated remarks or behaviour. The useful rule fits in one sentence: one send, one complete message, and silence accepted.

Information verified on 27 October 2026 on the public pages of Légifrance, service-public.fr, the CNIL, the Arcep, cybermalveillance.gouv.fr and the 33700 service (AF2M). This article provides general information and is not a substitute for legal advice.


Young woman wearing a call-centre headset, eyes lowered, in front of a grey wall

Why does repetition destroy anonymity?

Because a single message offers almost nothing to analyse, whereas three messages offer patterns. Anonymity by text message rests on the absence of a visible identifier on the recipient's side; it does not rest on the absence of context. And context is precisely what repetition manufactures.

In practical terms, as soon as they receive a second message of the same kind, the recipient has three new pieces of information they did not have before:

  • A rhythm. Sending times sketch out a schedule: someone who consistently writes between 12.30 pm and 1.15 pm, or always after 10 pm, is describing their working day without realising it.
  • Persistence. Following up betrays a personal stake. An isolated message could come from anyone; a follow-up comes from someone who wants something from the recipient — which narrows the list of suspects down to a few names.
  • A confirmed style. A particular turn of phrase in a single message is a coincidence. The same turn of phrase in two messages is a signature. This is exactly the mechanism described in the 7 checks to run before sending an anonymous text: content gives you away more often than your number does.

In other words, technical anonymity does not degrade with the number of sends — your number stays just as hidden on the tenth message as on the first — but real anonymity, the kind that matters, collapses. You don't get identified through a security flaw: you get guessed.

What does French law say about repeated messages?

It draws a clear distinction between a one-off send and a series. Article 222-33-2-2 of the Criminal Code, available on Légifrance, punishes harassing a person through repeated remarks or behaviour whose purpose or effect is to degrade their living conditions in a way that impairs their physical or mental health. The text specifies that the offence is made out even where those remarks or behaviour are inflicted on the same victim by several people acting in concert, and the penalties are increased where the acts are committed using an online public communication service or a digital medium.

Two practical consequences, and they are counter-intuitive:

  1. Being anonymous is not a mitigating circumstance. It erases nothing: it merely complicates identification, for as long as it takes for a judicial order to be served on the operator or on the service provider. We explain this mechanism in detail in is it legal to send an anonymous text in France?.
  2. Repetition is the constituent element. A clumsy, inappropriate, even unpleasant message, sent once, remains legally just a message. The same message sent five times changes in nature. It is not a question of how much text there is, it is a question of how many occurrences.

Two other provisions need to be added, ones people forget about when they decide to "just try again":

SituationApplicable provisionTipping point
Repeated messages affecting the victimArt. 222-33-2-2 of the Criminal Coderepetition
Malicious calls or repeated sound attacksArt. 222-16 of the Criminal Codereiteration
Message presented as coming from a third partyArt. 226-4-1 (identity theft)use of another person's name
Threat to kill or to damage propertyArt. 222-17 and followingthe content, from a single message onwards

The table reads in one direction only: the more you persist, the further you move away from the right to communicate discreetly and into the territory of a criminal offence. The service-public.fr factsheets on harassment and threats give the official, regularly updated version.

How do you write a message that stands on its own in one send?

By writing down the reason for sending it first, not the feeling. Most follow-ups are born out of an incomplete initial message: you wrote the emotion without writing the information, so the recipient can't do anything with the message, so you start over.

A self-contained anonymous text contains four elements, in this order:

  1. The fact. What the recipient needs to know, stated in one sentence they can verify for themselves. "The gate to the bike store has been left open at night since Monday."
  2. The consequence. Why it concerns them. "Two bikes have gone missing."
  3. The possible action. What they can do, without you. "The building manager can have the door closer adjusted."
  4. The closing line. The sentence that frees you from following up. "One message only, I won't send anything else."

This fourth point is the most useful and the most neglected. Announcing that there will be no follow-up has two effects: it reassures the recipient (this isn't a campaign, it's a piece of information) and it commits you to yourself. If you don't follow up because you wrote that you wouldn't, your anonymity holds.

As for the length constraint, nothing has changed since the format was invented: beyond 160 characters the message is split into segments, which multiplies the risk of it arriving partially or out of order. Our article on writing a self-contained anonymous message in 160 characters sets out that writing discipline, and the site's character counter lets you check before you send.

For messages that genuinely require thought — a difficult announcement, a neighbourhood report, cutting off contact — writing the draft away from your phone changes everything. A hardback notebook, used and then destroyed, syncs nothing to the cloud, triggers no notification preview and keeps no version history. It's an archaic detour, but it's the only drafting medium with no automatic backup.

Smiling young woman with curly hair on a smartphone in front of a red brick wall

What if I get no reply at all?

That's the most common outcome, and it is almost never read correctly. No reply to an anonymous text does not mean the message failed to arrive, nor that it was ignored. Most often it means the recipient cannot reply.

Four explanations, in order of likelihood:

  • There is no return channel. Many anonymous messages are sent from a sending number that cannot be reached by reply. The recipient sees the text, types an answer, and it goes nowhere. Exactly how the solutions that do allow a reply work is explained in anonymous text with a reply: how does it work?.
  • They filtered it. On some phones, messages from unknown senders land in a separate tab, with no audible notification.
  • They chose not to reply. Replying to a stranger has become a reflex that awareness campaigns advise against, and the 33700 service encourages reporting rather than replying.
  • They're thinking about it. A serious anonymous message sometimes takes several days to sink in. Forty-eight hours of silence is not a refusal.

The right course of action is the same in all four cases: send nothing else. If the information mattered and didn't get through, the right answer is not a second anonymous text, it's a different channel — an unsigned letter dropped in the letterbox, a report to the appropriate person or body (building manager, school head, doctor, public service), or a message sent openly under your own name if the subject warrants it. Switching channels is not persisting: it's acknowledging that the channel you chose didn't work.

And if waiting for a reply turns into an obsession — checking the screen every ten minutes, sleeping with the phone within reach — the problem is no longer a technical one. Putting the device at the other end of the room and replacing it with a small screen-free bedside alarm clock is a ridiculously simple measure that breaks the follow-up loop before it starts.

How long should you wait, and what then?

One benchmark is enough: 72 hours, then you close the file. Here is a sequence you can follow without thinking, which is precisely the point of having a sequence.

  1. Day 0 — send. One message, complete, with the closing line. You note the exact time somewhere off your phone.
  2. Day 0 to Day 3 — deliberate silence. No follow-up, no compulsive checking, no second attempt "just in case". This is the phase where people lose their anonymity by giving in.
  3. Day 3 — review. Got a reply? You carry on within the framework you set. Nothing at all? Move to step 4.
  4. Day 3 — change channel or drop it. Either the subject warrants an open or institutional channel, or it doesn't and the matter is closed. There is no third option.
  5. Clean-up. Delete the draft, the clipboard (copying a neutral piece of text over the top is enough on most phones), the notes and the screenshots. If you kept a paper draft, it goes through the shredder — a cross-cut paper shredder does that job far better than a bin.

This timetable has a secondary benefit: it protects you. Someone who sent a single, dated, non-threatening message and never followed up is in a radically different position from someone who sent nine messages in three days — including if the matter ever ends up with the police.

Two call-centre agents wearing headsets in front of computers and a keyboard

What if I'm the one receiving repeated messages?

The symmetry is exact: what makes repetition a danger for the sender makes it evidence for the recipient. On the receiving end, three steps, in order:

  • Keep everything, don't reply. Every message is a piece of evidence. Screenshots must show the date, the time and the sender as displayed; the full method is described in anonymous texts: how to build solid evidence.
  • Report it. The 33700 service (run by the AF2M) handles unwanted text messages: you forward the message to 33700, then send the sender's number when asked. For more serious matters, cybermalveillance.gouv.fr points you to the right people.
  • File a complaint if the repetition becomes established. A complaint can be filed at a police station, a gendarmerie brigade, or by letter to the public prosecutor. The sender's anonymity is not an obstacle: identification is carried out through an order served on the operator, which retains connection data under the conditions laid down by the regulations.

If the messages come alongside calls from a withheld number, filtering incoming calls is a useful measure — but, as we explained in blocking withheld-number calls without missing a text, no call filter has any effect on text messages. And in situations where the same sender keeps coming back regardless, the stop being contacted page sets out the options.

One practical detail to finish with: screenshots vanish along with the phone. If you are building a file that may be needed months later, a copy on an encrypted USB stick kept away from home is worth more than any automatic backup — which, unlike the stick, can be viewed by anyone you share an account with.

Frequently asked questions

Is sending the same anonymous text twice illegal?

Two sends do not automatically constitute harassment, but they take you into the territory of repetition covered by Article 222-33-2-2 of the Criminal Code. The assessment is for the judge, who looks at the content, the context and the effect on the person. The cautious principle is simple: one send, not two.

How can I tell whether my anonymous text was received?

In most cases, you won't know. Delivery receipts depend on the service used and say nothing about whether the message was read; our article on what the recipient of an anonymous text can see about you sets out what actually comes back. Assuming the message arrived saves you a pointless follow-up.

Can I follow up if the information really was important?

Yes, but not through the same anonymous channel. Important information that produced no effect should go through someone able to act: the building manager, an employer, a school, a public service, or a message sent openly. Switching channels is legitimate; repeating the same gesture is not.

Can a single message still be prosecuted?

Yes, if its content amounts to an offence in itself: a threat to kill, a threat to damage property, blackmail, identity theft. In those cases repetition is not required: one message is enough to make out the facts.

How long should I wait before concluding there will be no reply?

Three full days is a reasonable benchmark for a personal message. Beyond that, the absence of a reply should be treated as a reply — and the matter closes, with no further send.


Updated 27 October 2026. Legal references (the Criminal Code, the 33700 service) and reporting procedures may change: check the version in force on Légifrance and service-public.fr before taking any steps. To send a message by the book, see the sending page and the step-by-step guide.

#SMS anonyme#Anonymat#Cadre légal#Confidentialité#Cas d'usage

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