How to Create an Alias on Gmail: What You Need to Know
Gmail aliases let you send and receive email under a different address without creating a separate account. Whether you want to keep your personal inbox tidy, manage a side project, or protect your main email address from spam, understanding how Gmail handles aliases — and what the term actually means in different contexts — matters before you start.
What Is a Gmail Alias?
An email alias is an alternate address that routes messages to your existing inbox. When someone sends an email to your alias, it lands in your main Gmail account. Depending on how you set it up, you may also be able to reply from that alias, making it appear as though the email came from a completely different address.
Gmail supports aliases in two distinct ways, and confusing them is one of the most common mistakes people make.
The Two Types of Gmail Aliases
1. The Dot Trick and Plus Addressing (Built-In, No Setup Required)
Gmail ignores dots in the username portion of your address. So [email protected], [email protected], and [email protected] all deliver to the same inbox. This is automatic — you don't configure anything.
Plus addressing works similarly. Adding a + and any word after your username — like [email protected] — routes mail to your main inbox. This is useful for filtering and identifying which services are sharing your address.
The limitation: You can't send from these addresses. They're receive-only variations. Anyone who looks carefully can still see your real address underneath.
2. "Send Mail As" — A True Sending Alias
This is what most people actually want when they search for how to create an alias on Gmail. The Send Mail As feature lets you add a completely different email address to your Gmail account and send outgoing mail from it — including replies. The recipient sees the alias address, not your Gmail address.
This requires you to already own the other email address (for example, a custom domain address or another email account you control).
How to Set Up "Send Mail As" in Gmail 📧
Here's the general process through Gmail on a desktop browser:
- Open Gmail Settings (the gear icon → See all settings)
- Go to the Accounts and Import tab
- Under "Send mail as," click Add another email address
- Enter the name and email address you want to use as your alias
- Choose whether to treat it as an alias (keep this checked in most cases)
- Gmail will ask you to verify ownership of that address — typically by sending a confirmation code to it
- Once verified, you can select it as the "From" address when composing new messages
You can also set a default sending address if you primarily want to operate from the alias rather than your main Gmail address.
Key Variables That Affect How This Works
Not every setup produces the same result. Several factors shape the experience:
| Variable | Why It Matters |
|---|---|
| Email provider of the alias | Some providers (like Outlook or Yahoo) may show "sent via Gmail" headers, which can reveal your underlying account |
| Custom domain vs. free email | Custom domain aliases (e.g., [email protected]) look more professional and are less likely to trigger spam filters |
| Google Workspace vs. free Gmail | Google Workspace accounts have additional alias management options controlled by the admin |
| SMTP vs. Gmail's servers | When adding an alias, you can choose to send through Gmail's servers or configure a custom SMTP — this affects deliverability and headers |
| Mobile vs. desktop | The Send Mail As setup is only available through the desktop web interface; once configured, you can switch from addresses in the Gmail mobile app |
Google Workspace Aliases Work Differently
If you're using Google Workspace (formerly G Suite) for a business or organization, alias management works at the admin level. An admin can add alias addresses directly to a user's account without requiring any verification step. Those aliases receive mail automatically, and users can send from them through the Send Mail As method described above.
Free personal Gmail accounts don't have this admin layer — every alias address you add must be independently verified.
What "Send Mail As" Doesn't Do 🔍
It's worth being clear about the boundaries:
- It does not create a new inbox. All mail comes to your single Gmail inbox.
- It does not hide your Google account from sophisticated header analysis — some email clients show full routing headers.
- It does not allow you to add an address you don't own or can't verify.
- It is not the same as a Gmail "alias" in Google's own account settings, which refers to alternate addresses tied to your Google identity (like a Googlemail address) rather than external addresses you control.
The Factors That Make the Right Setup Different for Everyone
How useful an alias setup is depends heavily on your specific situation. Someone managing a small business who owns a custom domain has different options — and different email header concerns — than someone using a free Gmail account who just wants a cleaner address for newsletters.
The number of aliases you need, whether deliverability and professional appearance matter, how technically comfortable you are with SMTP settings, and whether you're on a personal or Workspace account all push the right approach in different directions. The mechanics above give you the foundation, but which path makes sense depends on what you're actually trying to accomplish and what accounts you already have access to.