// FAQ
Is the message end-to-end encrypted?
What encryption actually covers along the chain of an SMS.
No. Like any SMS, it is not end-to-end encrypted: avoid writing sensitive information in it (passwords, bank details).
No, an SMS is not end-to-end encrypted the way an encrypted messaging app can be. This is a limit of the SMS channel itself, not an oversight by the service.
The answer in detail
Sending your message to the gateway goes through a secure connection (TLS). Once handed to the mobile network, however, the SMS follows carrier delivery, which is not end-to-end encryption.
Anonymous SMS therefore protects your identity towards the recipient — your number stays hidden — but it doesn't turn the SMS into a confidential channel like an encrypted messaging app.
If what you need is confidentiality of the content between two people who know each other, an encrypted messaging app is the right tool. If what you need is to hide your number from a recipient, anonymous SMS answers exactly that case.
Real-world examples
›Hiding your number
The ideal case for anonymous SMS: the recipient doesn't see who's writing.
›Content confidentiality
For a secret among close ones, prefer an end-to-end encrypted messaging app.
Key takeaway
No end-to-end encryption: the service hides your number, it doesn't make the content confidential like an encrypted messaging app.
Related questions
All questions// Anonymous SMS · Hidden number · To France
Envoyez votre message, gardez l'anonymat
Votre numéro reste masqué, aucune inscription, aucune trace. Rédigez, confirmez, et votre SMS part de façon totalement anonyme.
Envoyer un SMS anonyme