Is it safe to send a password by email?

No. Emails are stored permanently on servers, in inboxes, and in backups. Anyone with access to either inbox can read past messages. ProtonURL encrypts the password end-to-end and destroys it after one read.

How do I send a password securely?

The safest way is to use a one-time encrypted link. Paste your password into ProtonURL, create the link, and send it to your recipient. When they open the link, the password is displayed once and then permanently deleted.

Can I add an extra password to the link?

Yes. ProtonURL supports optional passphrase protection. Even if someone intercepts the link, they cannot read the password without the passphrase. Both the link password and the optional passphrase are never sent to our servers.

What happens after the password is viewed?

After the first read, the password is permanently deleted from our servers with a signed ECDSA deletion proof. The link cannot be used again — there is no way to retrieve the password a second time.

Do I need an account to send a password?

No. ProtonURL works without an account. You can create encrypted one-time password links immediately. Creating a free account gives you access to additional features like link history and API access.

Password Sharing · One-time · Encrypted

Send a Password Securely — One-Time Link, Self-Destructs After Reading

Stop sending passwords by email or chat. Create an encrypted one-time link that burns itself after your recipient reads it.

End-to-end encrypted
Destroyed after one read
Optional passphrase
No account required

Send a password securely — free Learn about self-destructing links

Why sharing passwords by email is dangerous

Every method of sharing passwords has security risks. Here's why traditional approaches fail.

Method	Stored Permanently	Encrypted	One-Time Read	Deletion Proof
Email / Gmail
Slack / Discord
SMS / WhatsApp
ProtonURL

How ProtonURL password sharing works

Enter your password

Paste the password into ProtonURL. Optionally set a passphrase for an extra layer of encryption.

Get a one-time link

Your password is encrypted in-browser. Share the generated link with your recipient through any channel.

Burned after reading

Your recipient views the password once. It is then permanently deleted with a verifiable ECDSA deletion proof.

When to use one-time password links

Sharing credentials with clients

Share login details with clients without leaving copies in email or chat history.

API keys for developers

Send API keys to contractors or team members without storing them in plaintext.

Onboarding new employees

Share initial login credentials securely during the onboarding process.

Contractor access

Grant temporary access to contractors without exposing credentials permanently.

Remote support sessions

Share temporary access credentials during remote support without leaving traces.

Family account access

Share streaming or subscription passwords with family members safely.

Frequently asked questions

Stop sending passwords by email or chat

Create an encrypted one-time link in seconds. Free, no account required.

Send a password securely — free