SecureMint

Share 2FA Backup Codes Safely (Without Emailing Them)

Your 2FA backup codes are literally the keys to your accounts if you lose your phone. Most guides say 'print them and put them in a safe' — great for you, terrible if your co-founder needs emergency access while you're on a plane. Emailing them is out of the question. SecureMint's encrypted memos solve this: send a one-time, password-protected, burn-after-reading memo that vanishes after it's read once.

Create Encrypted 2FA Memo
SecureMint uses zero-knowledge design. The server cannot read your data.

Steps

1

Decide who actually needs them

Limit sharing to one or two people: a spouse, co-founder, or estate executor. The more copies exist, the more attack surface.

2

Paste the backup codes into a SecureMint memo

Open securemint.app/memo and paste the codes. Label which service they belong to (e.g., 'Gmail personal — recovery codes, 10 codes, last used 2024-03').

3

Add a password that only the recipient knows

Use something the recipient can derive but an attacker can't: a shared memory, not your pet's name. This is a second factor in case the link leaks.

4

Turn on burn-after-reading and set a short expiry

Expire in 1 hour if the recipient is ready to receive now, or 24 hours otherwise. Deliver the link and password through two different channels.

Why It's Secure

  • Double-channel principle: never send the link and password through the same app.
  • Burn-after-reading + password means an attacker needs BOTH the leaked link AND the password, AND must beat the recipient to opening it.
  • The recipient should store the codes in their own password manager immediately, then destroy the memo link.
  • Rotate your 2FA backup codes periodically and re-share using the same flow.

FAQ

Shouldn't I just use a shared password manager vault?
Shared vaults are fine for long-term sharing but create a single point of failure. SecureMint is better for one-time transfers — like onboarding a new co-founder or giving an estate executor emergency access without exposing your entire password manager.
Can I send multiple 2FA codes at once?
Yes, but we recommend one service per memo so that if one is compromised, others aren't. Batch them only if convenience outweighs risk.
Is SecureMint zero-knowledge for memos too?
Yes. The memo body is encrypted in your browser with AES-256-GCM before upload. Only the ciphertext reaches the server. The decryption key is in the URL fragment.

Related Tools

Secure Memo→Check Data Breach→Password Strength Checker→

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