Disposable email vs a regular inbox

Use a disposable address when you need to receive one message from a party you have no ongoing relationship with — a download link, a one-time code, a forum confirmation. Use your regular mailbox for anything you will need to log back into, be contacted about, or recover later.

The deciding question is not privacy. It is: would it hurt to lose this? A disposable address is designed to be lost.

A disposable address is good at four things:

• Keeping your real address off lists. An address you never reuse cannot be correlated across the sites you gave it to.
• Absorbing spam. If the address becomes a spam magnet, you abandon it rather than filtering it.
• Costing nothing to create. No setup, no password, no cleanup.
• Failing safely. A leaked disposable address discloses nothing about you, because nothing about you was attached to it.

A permanent mailbox is good at the things that matter later:

• Recovery. It is the address that gets you back into an account when you are locked out.
• Sending. Most disposable services, Geek Mails included, only receive.
• Durability. It is still there in three years.
• Confidentiality. Your provider is accountable to you in a way a free anonymous relay is not.

A disposable address hides your identity from the sender. It does not make the mail private. The service holding it can read it, and most of them can — including this one, which is why the privacy policy says so in as many words rather than advertising anonymity.

So the honest framing is: a disposable address is a compartmentalisation tool, not an encryption tool. It stops a site from linking this signup to the rest of your online life. It does not stop anyone who runs the mailbox from reading what arrives. If you need genuine confidentiality, you need an account with a provider you have a relationship with — not a free anonymous inbox.

Before typing an address into a form, ask what happens in a year:

1. Will I need to log back in? If yes, real mailbox — you will need password resets.
2. Is money or identity attached? If yes, real mailbox, always.
3. Do I want to hear from these people again? If no, disposable.
4. Am I only proving I can receive mail? Disposable, every time.

Most people get this wrong in one direction only: they use the disposable address for something they later need, and cannot get back in. Nobody has ever regretted using a real address for a newsletter.