Do I need to create an alias in the app before I use it?

No. Every address at your domain is already live. Give it to a company, and the alias is created and listed the first time that company emails it. You can still add one manually if you want it set up in advance.

What happens if someone emails an address I never used?

It is created too, because every address at your domain accepts mail. Guessed addresses such as info@ or admin@ show up in your alias list like any other, and you can disable them in one tap.

Auto-Create Email Aliases as You Sign Up

Auto-create email aliases just by using them.

Type any address at your domain into a signup form, and it starts working the moment the first email arrives.

Every new address gets its own spam count, its own switch, and its own record of who wrote to it.

Try it with your domain

Free software. You bring a domain you own, or register one during setup.

Auto-create email aliases: a steam alias that appeared in the list the moment its first email arrived

Make it up at the form

Signing up for Steam? Type steam@yourdomain.com. Booking a hotel? hotel-lisbon@yourdomain.com.

There is no app to open first and no address to reserve. Any address at your domain is already live.

The alias appears in your dashboard the moment its first email arrives, and that email is forwarded straight to your inbox.

A new steam alias appearing at the top of the alias list just now

What happens on the first email

The alias is created and listed alongside the others.
The sender is recorded as the company you gave it to.
Mail is forwarded to your main inbox, or to a different inbox you pick for that alias.
Counting starts: emails received, spam flagged, and any new senders.

Catch-all, with a switch on every address

A plain catch-all dumps everything for your domain into one pile. You can't tell the addresses apart, and you can't turn one off.

Here every auto-created address is its own alias. Give it an emoji and a colour, route it to a different inbox, or disable it, and senders to that one address are rejected while the rest keep working.

Insights screen showing which auto-created aliases later received mail from other companies

One honest caveat

Because every address is live, mail to an address you never used also creates an alias. That includes spammers guessing common names like info@ or admin@.

They show up in your list like anything else, and one tap disables them. More on catch-all trade-offs · Subdomain aliases vs catch-all

Common questions

Do I need to create an alias in the app before I use it?: No. Every address at your domain is already live. Give it to a company, and the alias is created and listed the first time that company emails it. You can still add one manually if you want it set up in advance.
What happens if someone emails an address I never used?: It is created too, because every address at your domain accepts mail. Guessed addresses such as info@ or admin@ show up in your alias list like any other, and you can disable them in one tap.