Temporary email vs. email aliases: which one should you use?
Gmail "+" addresses, hide-my-email aliases and disposable inboxes all promise to protect your real address. They solve different problems — here is how to pick.
There are three popular ways to avoid giving out your real email address. They are often lumped together, but they behave very differently. Picking the right one for each situation saves you both spam and headaches.
Plus addressing (you+shop@gmail.com)
Most providers deliver mail for you+anything@example.com straight to you@example.com. It is free and instant, and it tells you which site leaked your address.
Downsides: the plus part is trivial to strip, so spammers do it. Some sign-up forms reject the "+" character. And the mail still lands in your real inbox — you have gained a label, not a wall.
Alias services (hide-my-email, SimpleLogin, Firefox Relay)
An alias is a real, separate address that forwards to your inbox. You can turn it off when it starts receiving junk, and the site never learns your real address.
Downsides: you need an account with the alias provider, forwarding adds a delay and an extra party that can read your mail, and the alias lives as long as your subscription does. Aliases are excellent for accounts you intend to keep.
Temporary inboxes (Temp Mail)
A temporary inbox is not forwarded anywhere: it is its own mailbox, created without an account, and deleted after a short time. Mail arrives in seconds and codes are detected for you.
Downsides: it is receive-only, it expires, and an open mailbox can be read by anyone who knows the address (add a password if that matters). It is the wrong tool for accounts you want to keep.
Quick decision guide
| Situation | Best choice |
|---|---|
| One-time download, free Wi‑Fi, contest | Temporary inbox |
| Testing a sign-up flow you built | Temporary inbox |
| Newsletter you actually want to read | Alias |
| Online shop you will order from again | Alias or plus address |
| Bank, government, main social account | Your real address |
Using them together
Many people run all three: a temporary inbox for anything they will never revisit, aliases for services they keep, and the real address for the handful of relationships that matter. That combination keeps the real inbox almost entirely free of spam — and keeps a breach at any single site from spreading to the others.