What Are Email Aliases (and Do You Need One)
People often reach for a brand new account when what they actually want is an alias — a second address that still lands in the same mailbox you already check every day. Worth knowing the difference before setting either one up.
What an alias actually is
An alias is an additional address tied to your existing account. Mail sent to it shows up in your normal inbox, right alongside everything else — there's no separate password, no separate login, and usually no separate storage limit to manage. Some providers also let you send mail from the alias, so it looks like a distinct address to whoever you're writing to, even though it's really just a label on your one account.
What it's genuinely good for
- Sorting incoming mail automatically — using a distinct alias for a specific purpose (say, online shopping) makes it trivial to filter that mail separately without a second account to check.
- Figuring out who shared your address — a unique alias given to one specific company or service makes it obvious where spam originated from if that alias starts getting junk mail.
- A cleaner-looking address for a specific purpose — without having to memorize a second password or check a second inbox.
When a real separate account makes more sense instead
- You genuinely want mail kept apart with its own separate storage limit and login — a business versus personal split, for instance.
- You need someone else (a family member, a colleague) to have their own independent access without seeing everything else in your main inbox.
- You want an address that survives even if something happens to your main account — aliases go down with the account they're attached to.
How to set one up
This varies by provider — some (like Gmail, using the +tag trick, or Outlook's aliases feature) support it natively for free; others require a paid tier or a custom domain. Check your specific provider's settings under "Aliases," "Send-as addresses," or similar wording — it's usually tucked into account or mail settings rather than being front and center.