Install HushHush on both phones and pair once, in person, by scanning a QR code. Type your message in HushHush and tap send: it is encrypted on your phone and the ciphertext is copied. Paste it into any app, whether SMS, WhatsApp, Slack or email. The other person copies the text and taps Paste in their HushHush to read it. The app in between only ever carries ciphertext. No account, no phone number, no server.
What encrypting before you send actually changes
Most messaging apps encrypt the connection between your phone and their server. The server, and whoever runs it, can still read the message. Some apps go further and encrypt end to end: as Element's help page puts it, the message is encrypted before it leaves your device and stays encrypted until it reaches the other person's. Whether you get that depends on the app and the chat. WhatsApp's privacy policy says it offers end-to-end encryption. Telegram's FAQ says only Secret Chats are encrypted device to device; ordinary cloud chats are encrypted between you and Telegram and stored on its servers.
Encrypting before you send takes the app out of the question. The text becomes ciphertext in HushHush, on your phone, with keys that only you and one other person hold. Whatever you paste it into sees a block of letters and numbers. If that app is end-to-end encrypted, your message is now wrapped twice. If it is not, or its admin can export chats, or its backups land in a cloud you did not choose, the copy they hold is still ciphertext.
It is not invisible. Ciphertext looks like ciphertext: anyone who can see the chat can tell that something encrypted was sent, when, to whom and roughly how long it was. What they cannot get is the words.
| What | A normal message in any app | With HushHush |
|---|---|---|
| The words you type | Visible to the app, unless it is end-to-end encrypted | Ciphertext only |
| Who you message, and when | Yes | Still yes |
| Admin export, backups, server copies | Contain the text | Contain ciphertext |
| How long the message is | Yes | Roughly, from the ciphertext |
| The other person needs to install something | No | Yes, HushHush on both phones |
The steps, in detail
1. Install HushHush on both phones
It is on the App Store and Google Play. Each of you sets a password. It is never stored anywhere, not even on the phone; it only opens your HushHush, the encrypted store where your contacts, keys and messages live.
2. Add a contact, in person
Meet. One of you taps Add contact and shows a QR code; the other scans it. That scan is the whole set-up: the two phones now share the keys they need, and nothing leaves the room. There is no directory and no invitation link, so nobody who was not there can be in the pairing. To be certain, compare the safety number HushHush shows you both.
3. Type it and tap send
Open the contact, write the message, tap send. HushHush encrypts it with four independent ciphers, in an order reshuffled for every message, and copies the result. Your clipboard now holds ciphertext, not your words.
4. Paste it into the app
Switch to SMS, WhatsApp, Slack, Telegram, email, whatever you use with that person. Paste. Send. That app stores and carries a block of ciphertext, as it would any other text.
5. The other person taps Paste
They copy the block out of the chat, open HushHush and tap Paste. It is decrypted on their phone and appears in the conversation inside their HushHush. To reply, they do the same in reverse. With a little practice the round trip takes about twenty seconds.
Or let it send itself
If you both connect Telegram, Matrix or email inside HushHush, you can skip the copying: messages are encrypted in HushHush, delivered over that channel and decrypted automatically at the other end. One-to-one chats on this route also get forward secrecy, so every message uses a fresh key and a key captured later does not open earlier messages. The channel still only ever carries ciphertext.
How HushHush helps
HushHush encrypts the text on your phone before it goes into the app you send with. That app carries only ciphertext, and the other person decrypts it in their HushHush. Both people need the app and one in-person pairing.
Pair once, in person
Open HushHush, add a contact, and scan the QR code on the other phone. No account, no phone number, no server.
Type it in HushHush
Write the message and tap send. It is encrypted on your phone and copied as ciphertext.
Paste it into any app
The app carries the ciphertext. Your contact pastes it into HushHush to read it. Or connect Telegram, Matrix or email and it is sent and decrypted automatically.
What HushHush does not do. It does not hide who you talk to or when: the app you paste into still sees the ciphertext, its length and the time. Both people need HushHush. It protects text, not the carrying app's own calls or other features. And it does not make an app private that was not: it makes one message unreadable to it.
Frequently asked questions
Can you encrypt a text message?
How do I send an encrypted message to someone?
Is encrypting a message the same as end-to-end encryption?
What is the easiest way to encrypt a message?
Can the other person read it without HushHush?
Encrypt it before any app sees it.
HushHush is on the App Store and Google Play. Pair in person, then send in any app.
Related
Sources
- Element help and support, Element, accessed 7 October 2026.
- WhatsApp Privacy Policy, WhatsApp, accessed 7 October 2026.
- Telegram FAQ, Telegram, accessed 7 October 2026.