Disposable email vs. email alias: which one do you need?

A shop wants your email before it will show you the discount code, and you can already picture the sale emails that will follow. A disposable email and an email alias both keep your real address away from the shop, but they send the mail to different places. A disposable email keeps it in a separate inbox. An email alias forwards it to your real one.

So the choice comes down to one question: do you want this mail in your real inbox at all?

A disposable email is a separate inbox

A disposable email, also called a burner email or temp mail, is an address with its own inbox, apart from your main email. You open it when you need it, and whatever arrives stays there. Your real inbox never sees it.

Some disposable addresses vanish after ten minutes or an hour. Others keep the address and only clear out old messages on a schedule. The difference shows up months later, when you need a password reset: if the address is gone, so is your way back into the account. For the basics, see what a temporary email is.

An email alias forwards mail to your real inbox

An email alias is an extra address that points at your real inbox. When a shop writes to the alias, the message is passed on to you, and you read it next to the rest of your mail.

The shop only sees the alias, not your real address. But everything it sends still lands in your inbox, mixed in with the mail you care about, until you turn the alias off.

One catch: a plus address, like yourname+shop@..., is not a true alias. Anyone can delete the part after the plus and write to your real address directly.

Disposable email vs email alias: where the mail ends up

The big difference is where the mail lands. A disposable email keeps it in a separate inbox that you check when you choose. An email alias forwards it into your real inbox, with everything else. That one difference shapes the rest.

Spam. Spam sent to a disposable address never reaches your real inbox. Spam sent to an alias does, for as long as the alias keeps forwarding it.

Keeping mail. A disposable inbox may delete messages after a set time. Mail that comes through an alias stays in your inbox for as long as you keep it.

Setup. A disposable email works the moment you open it, with nothing to set up. An alias always needs a real inbox behind it.

When a disposable email is the better choice

Pick a disposable email for mail you can take or leave: a free trial that will send sales emails for weeks, a coupon that comes with a newsletter, a game or forum you want to try before you trust it, or a guide you can only download after typing in an email.

It is also the right tool for testing a signup form, when you need an inbox that really receives mail. And if you are unsure about a site, that doubt is reason enough.

When an email alias is the better choice

Pick an alias, or your real address, when you want to see the mail every day, need to keep it for years, or would be upset to miss it. A shop you order from every month is a good example: you want the shipping updates, you would just rather not share your main address.

For banking, government, health and work, a throwaway inbox is the wrong tool. Use your real address for those.

A quick test: if missing this mail would upset you, it belongs in your real inbox.

Use both, with a simple split

You do not have to pick one for everything. This split covers most of what lands in an inbox:

1. Your real address, or an alias, for accounts you will keep for years.
2. A disposable email for single use signups, trials and anything you are unsure about.
3. A new disposable address for each site, so you can tell which one gave your address away.

That last habit has its own guide: one address per signup.

Where freemail fits: a disposable inbox that keeps its address

In these terms, freemail is a disposable email with one difference: the address never expires. Only old messages are deleted, after 7 days on the Free plan, 30 days on Pro and 90 days on Max. So a password reset months from now still has an address to land in.

Opening freemail.site gives you a working address straight away, with no signup and no password. It only receives mail, so you cannot send or reply from it. It does not store IP addresses and keeps no access logs. Signing in is optional: use your email and a six digit code, and your inboxes stay with you on every device, even if you clear your browser.

On Pro, which costs $4 a month or $40 a year, you can choose your own address names, like shopping@.... That gives you some of the feel of an alias, with a named address for each kind of mail, while the mail still stays out of your real inbox.

Get a free inbox that never expires

Common questions

What is the difference between a disposable email and an email alias?

A disposable email is a separate inbox, so its mail never reaches your real one. An email alias is a forwarding address, so its mail lands in your real inbox. Both hide your real address from the site you give it to.

Is a burner email the same as an email alias?

No. A burner email is another name for a disposable email: an inbox of its own that you can walk away from. An alias forwards mail to your real inbox, so it stays tied to your main email.

Which is better for avoiding spam?

A disposable email keeps spam out of your real inbox completely, because the mail never gets there. An alias hides your real address, but spam still reaches your inbox until you turn the alias off. For signups you do not trust, a disposable email is the simpler choice.