Security
Your inbox stays yours.
Paste the address where a site asks for email. The code comes here. Other people can write to that address. They cannot open it, and the mail does not sit around afterward.
01
Only you can open it
Anyone can send mail to the address. They cannot read what arrived. The inbox stays with this browser, or with the recovery secret you saved.
02
Opening it stays quiet
The preview does not load the sender’s pictures. Reading the code does not tell their tracker that you opened the mail.
03
It does not linger
The free inbox lasts about an hour. You can delete it sooner. After that, the message is gone and that address is not given out again.
What you are protected from
- A stranger opening the inbox because they saw the address.
- The sender learning that you read the message, through a hidden image.
- The mail sitting in a box you forget about for months.
- Your everyday inbox filling up with the follow-up from a one-time signup.
What this does not do
- It is not a home for banking, medical, or government mail.
- It does not make you anonymous to the site you just signed up on.
- It does not guarantee that every website will accept the address.
- It does not keep a copy you can ask for next week.
Questions people ask before they paste the address
If someone sees my Mailby address, can they read the mail?
No. The address only receives mail. Reading it takes the browser session that created the inbox, or the recovery secret shown once.
Does the other website still know I used this address?
Yes. The site you sign up on sees the address you paste. Mailby keeps strangers out of the inbox. It does not hide the address from the form you filled in.
Will this replace my real email?
No. Use it for a signup or a code you need right now. Use your real address when you will need the account later, or when the mail is a receipt, a password reset, or anything you cannot lose.
Do you sell the messages or use them for ads?
No. The message is there so you can read it. It is not sold, and it is not used to train models.
Can I send mail from this address?
No. Mailby accepts mail for the address. It does not send, and it does not pass the message on to another mailbox.
What if an address is being used to trick people?
Write to abuse@mailby.app with the address and roughly when it happened. A flaw in Mailby itself goes to security@mailby.app.
If something feels wrong
An address used to trick someone else belongs on the abuse page. A problem with your own inbox or bill belongs with support. The longer rules, including who operates Mailby, are on the company and privacy pages.