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Alternatives

Products that do what Send Once does

SendOnce — Send it. They see it. It's gone.

  1. 1
    Once75

    Share private infomation away from email and chat.

    2020

  2. 2
    BURN.link170

    Send secure, encrypted, self-destructing messages

    2020

  3. 3
    SendIT232

    Send crypto using email or social handles

    2023

  4. 4

    Send secrets to anyone without leaving a digital footprint

    2022

  5. 5
    Secret173

    Send a message through a safe, private, and encrypted link

    2017

  6. 6

    Send encrypted self-destructing messages wherever you want

    2019

  7. 7

    Send and share files securely, directly and free

    2019

  8. 8

    Transfer passwords to loved ones if something happens to you

    2022

  9. 9
    1ty.me158

    Self destructing links for sharing sensitive information

    2018

  10. 10

    Send encrypted documents & messages to anyone

    2020

  11. 11TD

    This is simply a web interface built on top of the timelock encryption system posted by Cloudflare last week. https://blog.cloudflare.com/harnessing-office-chaos

    2024 · timelock.dev

  12. 12
    Hush94

    Share secrets safely in Slack

    2020

  13. 13

    Send files securely without leaving your Slack channel!

    2020

  14. 14IP

    Hey HN! I made a service to share passwords easy and secure but never promoted it. It's called instapass.io I noticed that people besides my friends and clients actually started to use, so maybe it will be helpful for you too! You share one-time self-destruct message using one time links and I won't even be able to see what you wrote. How does it work? When you generate a message the client-side makes a random password and use that to encrypt the message. The password is appended as an anchor tag which all modern browsers never send to the server. This way, I don't even know what you shared.…

    2019

  15. 15

    Send self-destructing email without leaving a trace

    2015

  16. 16
    1SecMail112

    Instant temporary email

    2025

  17. 17

    Share secrets once, safely.

    Mar 2026 · sentrashare.net

  18. 18SB

    Stasher is a tiny CLI tool that lets you share encrypted secrets that burn after reading — no accounts, no logins, no servers to trust. I built it because I just wanted to share a password. Not spin up infra. Not register for some "secure" web app. Not trust Slack threads. Just send a secret. Secrets are encrypted client-side with AES-256-GCM. You get a `uuid:key` token to share. Once someone reads it, it's gone. If they don't read it in 10 minutes, it expires and deleted. Everything is verifiable. Every release is signed, SLSA-attested, SBOM-included, and logged in the Rekor transparency…

    2025 · github.com

  19. 19

    Secure Anonymous SMS in the cloud (and a phone number)

    2018

  20. 20
    Encrypto141

    Encrypt the files you send.

    2015

  21. 21
    Vuash105

    Send secret messages safely.

    2016

  22. 22OS
  23. 23

    Share encrypted files that are ephemeral

    Mar 2026 · burnlink.page

  24. 24

    Passwords sent over email live forever, but not with Vault.

    2016

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