How to Create an Alias for 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, protect your primary address from spam, or manage multiple identities from one place, understanding how Gmail handles aliases is the first step — but the right approach depends heavily on your specific situation.
What Is a Gmail Alias?
A Gmail alias is an alternate email address that routes messages to your existing Gmail inbox. When someone sends an email to your alias, it lands in your main account. Depending on how the alias is set up, you may also be able to reply from that alias address, making it appear as the sender to the recipient.
Gmail supports two distinct types of aliases, and they work very differently.
The Two Types of Gmail Aliases
1. The Plus (+) Trick — Built-In and Instant
Gmail natively supports address tagging using a plus sign. If your address is [email protected], you can instantly use [email protected] or [email protected] — no setup required.
Any email sent to these tagged addresses lands directly in your main inbox. You can then create filters in Gmail settings to automatically label, archive, or organize those messages based on the tag.
Key limitations of the plus trick:
- The base address (
[email protected]) is still visible to senders and services - Many websites reject plus-sign addresses in their signup forms
- You cannot send outgoing email from a plus address as a true alias
This method is best for filtering and organization, not for masking your identity.
2. Custom "Send Mail As" Aliases — More Powerful, More Setup
Gmail also allows you to add a separate email address as an alias through Settings → Accounts and Import → Send mail as. This could be:
- Another Gmail account you own
- A custom domain email (e.g.,
[email protected]) hosted through Google Workspace or a third-party provider - A email address from another provider (Yahoo, Outlook, etc.)
Once configured, you can compose new emails and choose which address appears in the "From" field. Recipients see the alias, not your primary Gmail address.
How to Set Up a "Send Mail As" Alias in Gmail
Setting this up requires a few steps:
- Open Gmail and go to Settings (gear icon) → See all settings
- Navigate 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 an alias
- Gmail will ask whether to send through Gmail's servers or through the alias address's own SMTP server
- A verification email is sent to the alias address — you must confirm ownership before Gmail activates it
📌 If you choose SMTP sending (required for non-Gmail addresses), you'll need the outgoing mail server, port, username, and password for that account.
What Changes Based on Your Setup
| Setup Type | Can Receive Mail | Can Send From Alias | Hides Primary Address | Requires Extra Account |
|---|---|---|---|---|
| Plus (+) trick | ✅ Yes | ❌ No | ❌ No | ❌ No |
| Another Gmail address | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Custom domain via Workspace | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
| Third-party SMTP alias | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
Factors That Affect Which Approach Works for You
Your goal matters
Someone who just wants to sort newsletters needs nothing more than the plus trick and a Gmail filter. Someone running a small business who needs customers to see a professional address needs a custom domain alias with SMTP configured.
Technical access varies
Adding a third-party SMTP alias requires you to know — or be able to find — the SMTP server credentials for that external account. Some email hosts make this straightforward; others restrict it or require app-specific passwords.
Google Workspace changes the picture
If your Gmail account is part of Google Workspace (formerly G Suite), an administrator can create official alias addresses directly from the Admin Console — no workaround needed. Personal Gmail accounts don't have this option.
Mobile behavior isn't always identical
The Gmail mobile app for Android and iOS generally supports switching between "Send mail as" aliases when composing, but the interface differs slightly from the desktop. Some third-party mail clients that connect to Gmail via IMAP may not surface alias switching at all.
What the Plus Trick Can't Replace
It's tempting to rely on +tags as a full alias solution because they require zero setup. But they have a real ceiling: the recipient — whether a person or a website — can see your original address. For privacy-focused use cases, disposable email forwarding services (which are separate tools, not native Gmail features) solve what the plus trick cannot.
🔍 Understanding which type of alias you actually need — organizational, privacy-focused, or professional — is what determines which Gmail feature, or combination of features, is the right fit. The steps are straightforward once that's clear, but the configuration that makes sense for one inbox won't necessarily match another.